* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #252542;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --accent-cyan: #00d4ff;
    --success-green: #00d4aa;
    --success-green-dark: #00a080;
    --error-red: #ff6b6b;
    --error-red-dark: #cc5555;
    --warning-yellow: #ffd93d;
    --na-gray: #6b7280;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--bg-tertiary);
    padding: 0.75rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transform: translateY(-100%);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
}

.navbar.visible {
    transform: translateY(0);
    opacity: 1;
}

.navbar.hidden {
    display: flex;
}

.nav-title {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo {
    width: 36px;
    height: 36px;
    max-width: 36px;
    max-height: 36px;
    object-fit: cover;
    border-radius: 50%;
}

.nav-title h1 {
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-cyan), var(--success-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: opacity 0.2s;
}

.nav-title:hover h1 {
    opacity: 0.8;
}

.nav-current-domain {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border-radius: 20px;
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.current-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.current-domain {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-cyan);
}

.nav-search {
    display: flex;
    gap: 0.5rem;
}

.nav-search input {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    border: 1px solid var(--bg-tertiary);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    width: 180px;
    transition: border-color 0.3s, box-shadow 0.3s;
    font-family: 'SF Mono', 'Fira Code', monospace;
}

.nav-search input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.2);
}

.nav-search button {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--success-green));
    color: var(--bg-primary);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
    min-width: 90px;
}

.nav-search button:hover {
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(0, 212, 255, 0.3);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    transition: padding-top 0.4s ease;
}

.container.with-navbar {
    padding-top: 5rem;
}

#hero-header, #hero-search {
    transition: opacity 0.4s ease, transform 0.4s ease, max-height 0.4s ease;
}

#hero-header.hidden, #hero-search.hidden {
    opacity: 0;
    transform: translateY(-20px);
    max-height: 0;
    margin: 0;
    overflow: hidden;
    pointer-events: none;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

.hero-logo {
    width: 120px;
    height: 120px;
    max-width: 120px;
    max-height: 120px;
    object-fit: cover;
    margin-bottom: 1.5rem;
    border-radius: 50%;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-cyan), var(--success-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.search-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 2rem;
}

.input-wrapper {
    display: flex;
    gap: 0.5rem;
    width: 100%;
    max-width: 500px;
}

#domain-input {
    flex: 1;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    border: 2px solid var(--bg-tertiary);
    border-radius: 12px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
    font-family: 'SF Mono', 'Fira Code', monospace;
}

#domain-input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

#domain-input::placeholder {
    color: var(--text-secondary);
}

#analyze-btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--success-green));
    color: var(--bg-primary);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
    min-width: 120px;
}

#analyze-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

#analyze-btn:active {
    transform: translateY(0);
}

#analyze-btn.loading .btn-text,
#nav-analyze-btn.loading .btn-text {
    visibility: hidden;
}

#analyze-btn.loading .btn-loader,
#nav-analyze-btn.loading .btn-loader {
    display: block;
}

.btn-loader {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    border: 3px solid var(--bg-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.hint {
    margin-top: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.error-message {
    text-align: center;
    color: var(--error-red);
    padding: 1rem;
    margin-bottom: 1rem;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 8px;
    display: none;
}

.error-message.visible {
    display: block;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.sanitized-info {
    text-align: center;
    color: var(--accent-cyan);
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 8px;
    font-size: 0.9rem;
}

.sanitized-info.hidden {
    display: none;
}

.sanitized-info strong {
    color: var(--success-green);
    font-family: 'SF Mono', 'Fira Code', monospace;
}

.sanitized-icon {
    margin-right: 0.5rem;
}

.results {
    animation: fadeIn 0.5s ease-out;
}

.results.hidden {
    display: none;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.graph-section {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.graph-section h2,
.rfc-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

#chain-graph {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
    overflow-x: auto;
}

.chain-status {
    text-align: center;
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    font-weight: 600;
}

.chain-status.complete {
    background: rgba(0, 212, 170, 0.15);
    color: var(--success-green);
}

.chain-status.broken {
    background: rgba(255, 107, 107, 0.15);
    color: var(--error-red);
}

.bubble {
    cursor: pointer;
}

.bubble circle {
    transition: r 0.3s ease, filter 0.3s ease;
}

.bubble:hover circle {
    filter: brightness(1.2) drop-shadow(0 0 15px rgba(0, 212, 170, 0.6));
}

.bubble-signed circle {
    fill: url(#gradient-signed);
}

.bubble-unsigned circle {
    fill: url(#gradient-unsigned);
}

.bubble-unsigned:hover circle {
    filter: brightness(1.2) drop-shadow(0 0 15px rgba(255, 107, 107, 0.6));
}

.bubble text {
    fill: var(--text-primary);
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 14px;
    font-weight: 600;
    text-anchor: middle;
    pointer-events: none;
}

.connection-line {
    stroke-width: 3;
    fill: none;
}

.connection-valid {
    stroke: var(--success-green);
}

.connection-broken {
    stroke: var(--error-red);
    stroke-dasharray: 8, 4;
}

.connection-icon {
    font-size: 20px;
    font-weight: bold;
}

.connection-icon.valid {
    fill: var(--success-green);
}

.connection-icon.broken {
    fill: var(--error-red);
}




.detail-panel {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    animation: expandPanel 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.detail-panel.hidden {
    display: none;
}

@keyframes expandPanel {
    0% { transform: scale(0.8); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--bg-tertiary);
}

.detail-header h3 {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 1.3rem;
    color: var(--accent-cyan);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: background 0.2s, color 0.2s;
}

.close-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

#detail-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.detail-item {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 8px;
}

.detail-item .label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.detail-item .value {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-item .value.yes {
    color: var(--success-green);
}

.detail-item .value.no {
    color: var(--error-red);
}

.rfc-section {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 2rem;
}

.rfc-summary {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.summary-card {
    background: var(--bg-tertiary);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    text-align: center;
    min-width: 150px;
}

.summary-card .number {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.summary-card .number.passed {
    color: var(--success-green);
}

.summary-card .number.failed {
    color: var(--error-red);
}

.summary-card .number.percentage {
    background: linear-gradient(135deg, var(--accent-cyan), var(--success-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.summary-card .label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.rfc-checks {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.rfc-group {
    background: var(--bg-tertiary);
    border-radius: 12px;
    overflow: hidden;
}

.rfc-group-header {
    padding: 1rem 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s;
}

.rfc-group-header:hover {
    background: rgba(255, 255, 255, 0.05);
}

.rfc-group-title {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.rfc-group-stats {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.rfc-group-stats span {
    font-size: 0.9rem;
}

.rfc-group-stats .passed-count {
    color: var(--success-green);
}

.rfc-group-stats .failed-count {
    color: var(--error-red);
}

.expand-icon {
    transition: transform 0.3s;
    color: var(--text-secondary);
}

.rfc-group.expanded .expand-icon {
    transform: rotate(180deg);
}

.rfc-group-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.rfc-group.expanded .rfc-group-content {
    max-height: 1000px;
}

.rfc-check {
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    border-top: 1px solid var(--bg-secondary);
}

.check-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
    flex-shrink: 0;
}

.check-icon.pass {
    background: rgba(0, 212, 170, 0.2);
    color: var(--success-green);
}

.check-icon.fail {
    background: rgba(255, 107, 107, 0.2);
    color: var(--error-red);
}

.check-icon.na {
    background: rgba(107, 114, 128, 0.2);
    color: var(--na-gray);
}

.check-content {
    flex: 1;
}

.check-id {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.check-description {
    font-size: 0.95rem;
}

.check-details {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Language Switcher */
.language-switcher {
    position: relative;
    margin-left: 1rem;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background 0.2s, border-color 0.2s;
}

.lang-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-cyan);
}

.lang-arrow {
    font-size: 0.7rem;
    transition: transform 0.2s;
}

.language-switcher.open .lang-arrow {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--bg-tertiary);
    border-radius: 8px;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 1001;
    min-width: 140px;
}

.language-switcher.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem 1rem;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    text-align: left;
    transition: background 0.2s;
}

.lang-option:hover {
    background: var(--bg-tertiary);
}

.lang-option.active {
    background: rgba(0, 212, 255, 0.1);
}

.lang-option.active .lang-code {
    color: var(--accent-cyan);
}

.lang-code {
    font-weight: 700;
    font-size: 0.85rem;
}

.lang-name {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Hero language switcher positioning */
.hero-lang-switcher {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.hero-lang-switcher .language-switcher {
    margin-left: 0;
}

/* Presentation link button */
.presentation-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--accent-cyan);
    border-radius: 8px;
    color: var(--accent-cyan);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.presentation-link:hover {
    background: var(--accent-cyan);
    color: var(--bg-primary);
}

/* Hide hero switcher when navbar is visible */
.container.with-navbar .hero-lang-switcher {
    display: none;
}

/* Hamburger menu button */
.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    cursor: pointer;
    padding: 8px;
    transition: background 0.2s;
}

.nav-hamburger:hover {
    background: rgba(255, 255, 255, 0.1);
}

.nav-hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: transform 0.3s, opacity 0.3s;
}

.navbar.menu-open .nav-hamburger span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.navbar.menu-open .nav-hamburger span:nth-child(2) {
    opacity: 0;
}

.navbar.menu-open .nav-hamburger span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .input-wrapper {
        flex-direction: column;
    }

    #analyze-btn {
        width: 100%;
    }

    .rfc-summary {
        gap: 1rem;
    }

    .summary-card {
        padding: 1rem;
        min-width: 100px;
    }

    .summary-card .number {
        font-size: 1.8rem;
    }

    /* Mobile navbar styles */
    .navbar {
        flex-wrap: wrap;
        padding: 0.5rem 1rem;
        gap: 0.5rem;
    }

    .nav-title h1 {
        display: none;
    }

    .nav-current-domain {
        display: none;
    }

    .nav-hamburger {
        display: flex;
    }

    .nav-search {
        display: none;
        width: 100%;
        order: 10;
        padding-top: 0.5rem;
    }

    .navbar.menu-open .nav-search {
        display: flex;
    }

    .nav-search input {
        flex: 1;
        width: auto;
    }

    .language-switcher {
        margin-left: auto;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
    }

    .hero-logo {
        width: 80px;
        height: 80px;
        max-width: 80px;
        max-height: 80px;
    }

    .graph-section,
    .rfc-section {
        padding: 1rem;
    }

    .summary-card {
        min-width: 80px;
        padding: 0.75rem;
    }

    .summary-card .number {
        font-size: 1.5rem;
    }
}

/* ==================== BATCH MODE STYLES ==================== */

.mode-toggle {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.mode-btn {
    padding: 0.5rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--bg-tertiary);
    border-radius: 20px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.mode-btn:hover {
    border-color: var(--accent-cyan);
    color: var(--text-primary);
}

.mode-btn.active {
    background: linear-gradient(135deg, var(--accent-cyan), var(--success-green));
    border-color: transparent;
    color: var(--bg-primary);
}

.mode-content.hidden {
    display: none;
}

.batch-input-wrapper {
    max-width: 600px;
    margin: 0 auto;
}

.batch-input-wrapper textarea {
    width: 100%;
    padding: 1rem;
    font-size: 0.9rem;
    font-family: 'SF Mono', 'Fira Code', monospace;
    border: 2px solid var(--bg-tertiary);
    border-radius: 12px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    resize: vertical;
    min-height: 200px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.batch-input-wrapper textarea:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.batch-input-wrapper textarea::placeholder {
    color: var(--text-secondary);
}

.batch-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.btn-secondary {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid var(--accent-cyan);
    border-radius: 8px;
    background: transparent;
    color: var(--accent-cyan);
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
}

.btn-primary {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--success-green));
    color: var(--bg-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    min-width: 180px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary.loading .btn-text {
    opacity: 0;
}

.btn-primary.loading .btn-loader {
    display: block;
}

.btn-primary .btn-loader {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid var(--bg-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Batch Results */
.batch-results {
    margin-top: 2rem;
}

.batch-results.hidden {
    display: none;
}

.batch-progress-section {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    margin-bottom: 1.5rem;
}

.batch-progress-section h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.progress-bar-container {
    width: 100%;
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-cyan), var(--success-green));
    border-radius: 6px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    text-align: center;
    margin-top: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.batch-summary {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    margin-bottom: 1.5rem;
}

.batch-summary.hidden {
    display: none;
}

.batch-summary h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.summary-cards {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.batch-table-section {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 1.5rem 2rem;
}

.batch-table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.batch-table-header h2 {
    font-size: 1.2rem;
    color: var(--text-primary);
}

.export-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn-export {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--bg-tertiary);
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-export:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.batch-table-wrapper {
    overflow-x: auto;
}

.batch-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.batch-table th,
.batch-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--bg-tertiary);
}

.batch-table th {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.batch-table tbody tr:hover {
    background: rgba(0, 212, 255, 0.05);
}

.batch-table .domain-cell {
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: var(--accent-cyan);
}

.batch-table .status-yes {
    color: var(--success-green);
    font-weight: 600;
}

.batch-table .status-no {
    color: var(--error-red);
}

.batch-table .status-success {
    color: var(--success-green);
}

.batch-table .status-error {
    color: var(--error-red);
    font-size: 0.8rem;
}

.batch-table .row-error {
    background: rgba(255, 107, 107, 0.05);
}

@media (max-width: 768px) {
    .mode-toggle {
        flex-direction: column;
        align-items: center;
    }

    .mode-btn {
        width: 200px;
    }

    .batch-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn-secondary,
    .btn-primary {
        width: 100%;
        max-width: 300px;
    }

    .batch-table-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .batch-table {
        font-size: 0.8rem;
    }

    .batch-table th,
    .batch-table td {
        padding: 0.5rem;
    }
}

/* ==================== AI RECOMMENDATIONS STYLES ==================== */

.recommendations-section {
    background: var(--bg-secondary);
    border-radius: 16px;
    margin-top: 2rem;
    overflow: hidden;
}

.recommendations-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

.recommendations-header:hover {
    background: rgba(0, 212, 255, 0.05);
}

.recommendations-header h2 {
    font-size: 1.5rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.recommendations-header h2::before {
    content: '✨';
}

.recommendations-toggle {
    font-size: 1rem;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.recommendations-section.expanded .recommendations-toggle {
    transform: rotate(180deg);
}

.recommendations-content {
    padding: 0 2rem 2rem;
}

.recommendations-content.hidden {
    display: none;
}

.recommendations-mode-toggle {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.rec-mode-btn {
    padding: 0.5rem 1.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--bg-tertiary);
    border-radius: 20px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.rec-mode-btn:hover {
    border-color: var(--accent-cyan);
    color: var(--text-primary);
}

.rec-mode-btn.active {
    background: linear-gradient(135deg, var(--accent-cyan), var(--success-green));
    border-color: transparent;
    color: var(--bg-primary);
}

.recommendations-body {
    text-align: center;
}

.btn-generate {
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border: 2px solid var(--accent-cyan);
    border-radius: 12px;
    background: transparent;
    color: var(--accent-cyan);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    min-width: 250px;
}

.btn-generate:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.2);
}

.btn-generate.loading .btn-text {
    opacity: 0;
}

.btn-generate.loading .btn-loader {
    display: block;
}

.btn-generate .btn-loader {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    border: 2px solid var(--accent-cyan);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.recommendations-text {
    text-align: left;
    background: var(--bg-tertiary);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    margin-bottom: 1rem;
    line-height: 1.8;
}

.recommendations-text h2 {
    color: var(--accent-cyan);
    font-size: 1.3rem;
    margin: 1.5rem 0 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--bg-tertiary);
}

.recommendations-text h2:first-child {
    margin-top: 0;
}

.recommendations-text h3 {
    color: var(--success-green);
    font-size: 1.1rem;
    margin: 1.25rem 0 0.5rem;
}

.recommendations-text h4 {
    color: var(--text-primary);
    font-size: 1rem;
    margin: 1rem 0 0.5rem;
}

.recommendations-text p {
    margin: 0.75rem 0;
    color: var(--text-secondary);
}

.recommendations-text strong {
    color: var(--text-primary);
}

.recommendations-text ul {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
}

.recommendations-text li {
    margin: 0.25rem 0;
    color: var(--text-secondary);
}

.recommendations-text code {
    background: var(--bg-primary);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85em;
    color: var(--accent-cyan);
}

.recommendations-text pre {
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
}

.recommendations-text pre code {
    background: none;
    padding: 0;
    font-size: 0.85rem;
}

.btn-regenerate {
    padding: 0.5rem 1.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--bg-tertiary);
    border-radius: 8px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-regenerate:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.recommendations-error {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    margin-bottom: 1rem;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 8px;
    color: var(--error-red);
}

.error-icon {
    font-size: 1.2rem;
}

/* Clickable domain in batch results */
.domain-clickable {
    cursor: pointer;
    color: var(--accent-cyan);
    transition: all 0.2s ease;
}

.domain-clickable:hover {
    color: var(--accent-green);
    text-decoration: underline;
}

/* Back to batch results button */
.btn-back-to-batch {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    font-weight: 500;
    border: 1px solid var(--bg-tertiary);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-back-to-batch:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(0, 212, 170, 0.1);
}

.btn-back-to-batch .back-arrow {
    font-size: 1.1rem;
}

.btn-back-to-batch.hidden {
    display: none;
}

@media (max-width: 768px) {
    .recommendations-header {
        padding: 1rem 1.5rem;
    }

    .recommendations-content {
        padding: 0 1.5rem 1.5rem;
    }

    .recommendations-mode-toggle {
        flex-direction: column;
        align-items: center;
    }

    .rec-mode-btn {
        width: 200px;
    }

    .recommendations-text {
        padding: 1rem;
    }

    .btn-back-to-batch {
        width: 100%;
        justify-content: center;
    }
}

/* ==================== DOMAIN DETAILS SECTION ==================== */

.domain-details-section {
    background: var(--bg-secondary);
    border-radius: 16px;
    margin-bottom: 2rem;
    border: 1px solid var(--bg-tertiary);
    overflow: hidden;
}

.domain-details-header {
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s;
}

.domain-details-header:hover {
    background: rgba(255, 255, 255, 0.02);
}

.domain-details-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.domain-details-toggle {
    transition: transform 0.3s;
    color: var(--text-secondary);
}

.domain-details-section.expanded .domain-details-toggle {
    transform: rotate(180deg);
}

.domain-details-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}

.domain-details-section.expanded .domain-details-content {
    max-height: 5000px;
}

.domain-details-content:not(.hidden) {
    max-height: 5000px;
}

#domain-details-body {
    padding: 0 1.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Details Groups */
.details-group {
    background: var(--bg-tertiary);
    border-radius: 12px;
    overflow: hidden;
}

.details-group-header {
    padding: 1rem 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: background 0.2s;
    gap: 1rem;
}

.details-group-header:hover {
    background: rgba(255, 255, 255, 0.05);
}

.details-group-title {
    font-weight: 600;
    font-size: 0.95rem;
    flex: 1;
}

.details-group-status {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 90px;
    text-align: center;
    flex-shrink: 0;
}

.details-group-status.present {
    background: rgba(0, 212, 170, 0.2);
    color: var(--success-green);
}

.details-group-status.absent {
    background: rgba(255, 107, 107, 0.2);
    color: var(--error-red);
}

.details-group .expand-icon {
    transition: transform 0.3s;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.details-group.expanded .expand-icon {
    transform: rotate(180deg);
}

.details-group-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.details-group.expanded .details-group-content {
    max-height: 400px;
    overflow-y: auto;
}

.details-group-content::-webkit-scrollbar {
    width: 6px;
}

.details-group-content::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 3px;
}

.details-group-content::-webkit-scrollbar-thumb {
    background: var(--accent-cyan);
    border-radius: 3px;
}

.details-group-content::-webkit-scrollbar-thumb:hover {
    background: var(--accent-purple);
}

/* Details Subsections */
.details-subsection {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--bg-secondary);
}

.subsection-title {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--accent-cyan);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.subsection-info {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Details Grid */
.details-grid {
    display: grid;
    gap: 0.5rem;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.detail-value {
    font-weight: 500;
    text-align: right;
}

.detail-value.mono {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
}

.detail-value.warning {
    color: var(--warning-yellow);
}

.detail-ttl {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-left: 1rem;
}

.detail-priority {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-left: 1rem;
}

/* Details List */
.details-list {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.details-list .detail-row {
    padding: 0.4rem 0;
}

/* Key Cards (DNSKEY) */
.key-card {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.75rem;
}

.key-card:last-child {
    margin-bottom: 0;
}

.key-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.key-type {
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.key-type.ksk {
    background: rgba(0, 212, 255, 0.2);
    color: var(--accent-cyan);
}

.key-type.zsk {
    background: rgba(0, 212, 170, 0.2);
    color: var(--success-green);
}

.key-algo {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Signature Cards (RRSIG) */
.sig-type-group {
    margin-bottom: 1rem;
}

.sig-type-group:last-child {
    margin-bottom: 0;
}

.sig-type-header {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--accent-cyan);
    margin-bottom: 0.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
}

.sig-card {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.5rem;
    border-left: 3px solid var(--success-green);
}

.sig-card.expired {
    border-left-color: var(--error-red);
}

.sig-card:last-child {
    margin-bottom: 0;
}

.sig-status {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.sig-status.valid {
    background: rgba(0, 212, 170, 0.2);
    color: var(--success-green);
}

.sig-status.expired {
    background: rgba(255, 107, 107, 0.2);
    color: var(--error-red);
}

/* DS Cards */
.ds-card {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.5rem;
}

.ds-card:last-child {
    margin-bottom: 0;
}

.digest-row .detail-value.digest {
    word-break: break-all;
    font-size: 0.75rem;
    max-width: 60%;
}

/* NSEC Section */
.nsec-type-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.nsec-type-badge.nsec {
    background: rgba(0, 212, 255, 0.2);
    color: var(--accent-cyan);
}

.nsec-type-badge.nsec3 {
    background: rgba(0, 212, 170, 0.2);
    color: var(--success-green);
}

.nsec-type-badge.none {
    background: rgba(107, 114, 128, 0.2);
    color: var(--na-gray);
}

.nsec-details-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.more-records {
    margin-top: 0.75rem;
    padding: 0.5rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    border-radius: 4px;
}

/* No data message */
.no-data {
    padding: 1.5rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive adjustments for domain details */
@media (max-width: 768px) {
    .domain-details-header {
        padding: 1rem;
    }

    #domain-details-body {
        padding: 0 1rem 1rem;
    }

    .details-group-header {
        padding: 0.75rem 1rem;
        flex-wrap: wrap;
    }

    .detail-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    .detail-value {
        text-align: left;
    }

    .detail-ttl,
    .detail-priority {
        margin-left: 0;
    }

    .digest-row .detail-value.digest {
        max-width: 100%;
    }

    .subsection-info {
        flex-direction: column;
        gap: 0.5rem;
    }

    .key-header {
        flex-wrap: wrap;
    }
}

/* ==========================================================================
   PRESENTATION MODE STYLES
   ========================================================================== */

.presentation-body {
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.presentation-container {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

.presentation-container.fade-out {
    animation: fadeOut 0.5s ease-out forwards;
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* Slides */
.slide {
    position: absolute;
    inset: 0;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 4rem 6rem;
    opacity: 0;
    transform: translateX(20px);
}

.slide.active {
    display: flex;
    animation: slideIn 0.5s ease-out forwards;
}

.slide.slide-exit {
    display: flex;
    animation: slideOut 0.5s ease-out forwards;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(-20px);
    }
}

.slide-content {
    max-width: 1200px;
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.slide-title {
    font-size: 3.5rem;
    color: var(--accent-cyan);
    margin-bottom: 2.5rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
    position: relative;
    display: inline-block;
}

.slide-title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
}

.slide-title-main {
    font-size: 3.5rem;
    background: linear-gradient(135deg, var(--accent-cyan), var(--success-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    font-weight: 800;
}

.slide-text {
    font-size: 1.5rem;
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.highlight-text {
    color: var(--accent-cyan);
    font-weight: 500;
}

.slide-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Slide 1: Portada */
.slide-portada {
    text-align: center;
}

.presentation-logo {
    width: 120px;
    height: auto;
    margin-bottom: 2rem;
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.3));
}

.slide-date {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.team-section {
    margin: 2rem 0;
}

.team-section h3 {
    font-size: 1.5rem;
    color: var(--accent-cyan);
    margin-bottom: 1rem;
}

.team-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem 2rem;
}

.team-list li {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.matricula {
    color: var(--text-secondary);
    font-family: monospace;
    font-size: 0.9rem;
    margin-left: 0.5rem;
}

.slide-course {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 2rem;
    font-style: italic;
}

/* Slide 2: DNS - Two columns */
.two-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    text-align: left;
}

.column h3 {
    color: var(--accent-cyan);
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    margin-top: 1rem;
}

/* DNS Records Table */
.dns-records-table {
    background: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    margin-top: 0.5rem;
    max-height: 320px;
}

.table-header,
.table-row {
    display: flex;
    align-items: center;
    padding: 0.35rem 0.75rem;
}

.table-header {
    background: var(--bg-tertiary);
    border-bottom: 2px solid var(--accent-cyan);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.header-type {
    width: 90px;
    flex-shrink: 0;
    color: var(--accent-cyan);
    font-size: 0.75rem;
}

.header-divider,
.row-divider {
    width: 2px;
    align-self: stretch;
    background: var(--accent-cyan);
    margin: 0 0.75rem;
    opacity: 0.4;
}

.header-function {
    color: var(--accent-cyan);
    flex: 1;
    font-size: 0.75rem;
}

.table-row {
    border-bottom: 1px solid var(--bg-tertiary);
    transition: background 0.2s ease;
}

.table-row:last-child {
    border-bottom: none;
}

.table-row:hover {
    background: rgba(0, 212, 255, 0.05);
}

/* Scoped to avoid conflict with Slide 4 .record-type */
.dns-records-table .record-type {
    width: 90px;
    flex-shrink: 0;
    color: var(--success-green);
    font-family: monospace;
    font-weight: bold;
    font-size: 0.85rem;
    white-space: nowrap;
}

.dns-records-table .record-function {
    color: var(--text-secondary);
    font-size: 0.85rem;
    flex: 1;
}

.dns-hierarchy {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
}

.dns-node {
    padding: 1rem 2rem;
    border-radius: 8px;
    font-family: monospace;
    font-size: 1.1rem;
    font-weight: bold;
}

.dns-node.root {
    background: linear-gradient(135deg, var(--accent-cyan), #0099cc);
    color: var(--bg-primary);
}

.dns-node.tld {
    background: linear-gradient(135deg, var(--success-green), var(--success-green-dark));
    color: var(--bg-primary);
}

.dns-node.domain {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 2px solid var(--accent-cyan);
}

.dns-node.subdomain {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px dashed var(--text-secondary);
}

.dns-arrow {
    font-size: 1.5rem;
    color: var(--accent-cyan);
    padding: 0.5rem 0;
}

/* Slide 3: Security issues */
.history-block {
    background: var(--bg-secondary);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    border-left: 4px solid var(--accent-cyan);
}

.limitations-list {
    list-style: none;
    padding: 0;
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin: 1.5rem 0;
}

.limitations-list li {
    background: var(--bg-tertiary);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    color: var(--text-primary);
}

.slide-body h3 {
    color: var(--accent-cyan);
    font-size: 1.25rem;
    margin: 2rem 0 1rem;
}

.attack-timeline {
    display: flex;
    gap: 3rem;
    justify-content: center;
    margin-top: 1.5rem;
}

.attack-item {
    background: linear-gradient(135deg, var(--error-red), var(--error-red-dark));
    padding: 1.5rem 2rem;
    border-radius: 12px;
    text-align: center;
}

.attack-year {
    display: block;
    font-size: 2rem;
    font-weight: bold;
    color: white;
    margin-bottom: 0.5rem;
}

.attack-name {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
}

/* Slide 4: DNSSEC Components */
.dnssec-components {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin: 2rem 0;
}

.dnssec-item {
    background: var(--bg-secondary);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--bg-tertiary);
    min-width: 180px;
}

.record-type {
    display: block;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--success-green);
    font-family: monospace;
    margin-bottom: 0.5rem;
}

.record-desc {
    color: var(--text-secondary);
    font-size: 1rem;
}

.objective-box {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 212, 170, 0.1));
    border: 1px solid var(--accent-cyan);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    margin-top: 2rem;
}

.objective-box p {
    color: var(--text-primary);
    font-size: 1.2rem;
    margin: 0;
}

/* Slide 5: Timeline */
.rfc-timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline-line {
    position: absolute;
    top: 50%;
    left: 10%;
    right: 10%;
    height: 4px;
    background: var(--bg-tertiary);
    transform: translateY(-50%);
}

.timeline-item {
    position: relative;
    display: inline-block;
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    margin: 0 2rem;
    border: 1px solid var(--bg-tertiary);
    vertical-align: middle;
}

.timeline-item.highlight {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.timeline-year {
    display: block;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-cyan);
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    color: var(--success-green);
    margin: 0 0 0.25rem;
    font-family: monospace;
}

.timeline-content p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

.timeline-note {
    color: var(--success-green) !important;
    font-weight: 500;
    margin-top: 0.5rem !important;
}

/* Slide 6: Mexico */
.mx-slide {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.mx-points {
    list-style: none;
    padding: 0;
    text-align: left;
}

.mx-points li {
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    font-size: 1.2rem;
    color: var(--text-primary);
    line-height: 1.5;
}

.mx-points li.opportunity {
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.15), rgba(0, 160, 128, 0.15));
    border: 1px solid var(--success-green);
}

.mx-flag {
    display: flex;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    height: 150px;
}

.flag-stripe {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.flag-stripe.green {
    background: #006847;
}

.flag-stripe.white {
    background: #fff;
}

.flag-stripe.red {
    background: #ce1126;
}

.flag-emblem {
    font-size: 3rem;
}

/* Slide 7: Methodology */
.methodology-source {
    background: var(--bg-secondary);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--success-green);
    margin-bottom: 2rem;
    text-align: left;
}

.methodology-source p {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin: 0;
}

.methodology-list {
    text-align: left;
    padding-left: 2rem;
}

.methodology-list li {
    font-size: 1.25rem;
    color: var(--text-primary);
    padding: 0.75rem 0;
    line-height: 1.5;
}

/* Slide 8: Domain buttons */
.domain-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2rem;
}

.domain-button {
    background: var(--bg-secondary);
    border: 2px solid var(--accent-cyan);
    color: var(--accent-cyan);
    padding: 1.25rem 2.5rem;
    font-size: 1.5rem;
    font-family: monospace;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.domain-button:hover {
    background: var(--accent-cyan);
    color: var(--bg-primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

/* Slide 9: Metrics */
.metrics-body {
    text-align: center;
}

.charts-container {
    display: flex;
    gap: 4rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.chart-wrapper {
    text-align: center;
}

.chart-wrapper h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.pie-chart {
    width: 200px;
    height: 200px;
    margin: 0 auto;
}

.chart-legend {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.legend-yes, .legend-no {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.legend-yes .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--success-green);
}

.legend-no .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--error-red);
}

.legend-yes {
    color: var(--success-green);
}

.legend-no {
    color: var(--error-red);
}

.metrics-finding {
    background: var(--bg-secondary);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--warning-yellow);
}

.metrics-finding p {
    color: var(--warning-yellow);
    font-size: 1.1rem;
    margin: 0;
}

/* Slide 10: Recommendations */
.recommendations-list {
    text-align: left;
    padding-left: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.recommendations-list li {
    font-size: 1.2rem;
    color: var(--text-primary);
    padding: 1rem 0;
    line-height: 1.5;
    border-bottom: 1px solid var(--bg-tertiary);
}

.recommendations-list li:last-child {
    border-bottom: none;
}

/* Slide 11: Demo */
.slide-demo {
    text-align: center;
}

.demo-text {
    font-size: 2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-style: italic;
}

.demo-button {
    background: linear-gradient(135deg, var(--accent-cyan), var(--success-green));
    border: none;
    color: var(--bg-primary);
    padding: 1.5rem 4rem;
    font-size: 1.5rem;
    font-weight: bold;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 1rem;
}

.demo-button:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.4);
}

.demo-arrow {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.demo-button:hover .demo-arrow {
    transform: translateX(5px);
}

/* Slide 12: Conclusion */
.conclusion-list {
    list-style: none;
    padding: 0;
    max-width: 900px;
    margin: 0 auto;
    text-align: left;
}

.conclusion-list li {
    position: relative;
    font-size: 1.3rem;
    color: var(--text-primary);
    padding: 1rem 0 1rem 2rem;
    line-height: 1.5;
}

.conclusion-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-green);
    font-weight: bold;
}

.conclusion-icon {
    margin-top: 2rem;
}

.shield-icon {
    font-size: 4rem;
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.3));
}

/* Slide 13: Gracias / Thank You */
.slide-subtitle-thanks {
    font-size: 2.5rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    margin-bottom: 2rem;
    font-weight: 300;
}

.thanks-icon {
    margin: 2rem 0;
}

.thanks-icon span {
    font-size: 5rem;
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.3));
}

.slide-questions {
    font-size: 1.5rem;
    color: var(--accent-cyan);
    margin-top: 2rem;
    font-weight: 500;
}

/* Navigation Controls */
.presentation-nav {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 2rem;
    z-index: 100;
}

.nav-arrow {
    background: var(--bg-secondary);
    border: 1px solid var(--bg-tertiary);
    color: var(--text-primary);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.nav-arrow:hover {
    background: var(--accent-cyan);
    color: var(--bg-primary);
    border-color: var(--accent-cyan);
}

.progress-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.progress-dots {
    display: flex;
    gap: 0.5rem;
}

.progress-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.progress-dot:hover {
    background: var(--text-secondary);
}

.progress-dot.active {
    background: var(--accent-cyan);
    transform: scale(1.2);
}

.progress-dot.visited {
    background: var(--success-green);
}

.slide-counter {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-family: monospace;
}

/* Exit and Fullscreen buttons */
.presentation-exit,
.presentation-fullscreen {
    position: fixed;
    top: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--bg-tertiary);
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 100;
}

.presentation-exit {
    right: 1.5rem;
}

.presentation-fullscreen {
    right: 4.5rem;
}

.presentation-exit:hover,
.presentation-fullscreen:hover {
    background: var(--accent-cyan);
    color: var(--bg-primary);
    border-color: var(--accent-cyan);
}

/* Demo Iframe Overlay (preserves fullscreen) */
.demo-iframe-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 10000;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
}

.demo-iframe-overlay.hidden {
    display: none;
}

.demo-iframe-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--success-green) 100%);
    color: var(--bg-primary);
    font-weight: 600;
    flex-shrink: 0;
}

.demo-iframe-text {
    font-size: 0.9rem;
}

.demo-iframe-close {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 0, 0, 0.2);
    border: none;
    color: var(--bg-primary);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: background 0.2s;
}

.demo-iframe-close:hover {
    background: rgba(0, 0, 0, 0.3);
}

.demo-iframe-arrow {
    font-size: 1rem;
}

.demo-iframe {
    flex: 1;
    width: 100%;
    border: none;
    background: var(--bg-primary);
}

/* Language Switcher in Presentation */
.presentation-lang {
    position: fixed;
    top: 1.5rem;
    left: 1.5rem;
    z-index: 100;
}

.presentation-lang .language-switcher {
    position: relative;
}

.presentation-lang .lang-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--bg-tertiary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.presentation-lang .lang-toggle:hover {
    border-color: var(--accent-cyan);
    color: var(--text-primary);
}

.presentation-lang .lang-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--bg-tertiary);
    border-radius: 8px;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.presentation-lang .lang-dropdown.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.presentation-lang .lang-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    width: 100%;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background 0.2s;
}

.presentation-lang .lang-option:hover {
    background: var(--bg-tertiary);
}

.presentation-lang .lang-option.active {
    color: var(--accent-cyan);
}

.presentation-lang .lang-code {
    font-weight: bold;
}

.presentation-lang .lang-arrow {
    font-size: 0.75rem;
    transition: transform 0.3s;
}

/* Responsive Presentation Styles */
@media (max-width: 1024px) {
    .slide {
        padding: 3rem 4rem;
    }

    .slide-title {
        font-size: 2.5rem;
    }

    .slide-title-main {
        font-size: 2.5rem;
    }

    .two-columns {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .mx-slide {
        grid-template-columns: 1fr;
    }

    .charts-container {
        flex-direction: column;
        gap: 2rem;
    }

    .dnssec-components {
        flex-direction: column;
        gap: 1rem;
    }

    .attack-timeline {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .slide {
        padding: 5rem 1.5rem 6rem 1.5rem;
    }

    .slide-content {
        max-height: calc(100vh - 11rem);
        overflow-y: auto;
        padding-bottom: 1rem;
    }

    .slide-title {
        font-size: 1.75rem;
        margin-bottom: 1.5rem;
    }

    .slide-title-main {
        font-size: 1.75rem;
    }

    .slide-text {
        font-size: 1rem;
        margin-bottom: 1rem;
    }

    .team-list {
        flex-direction: column;
        gap: 0.5rem;
    }

    .domain-button {
        padding: 1rem 1.5rem;
        font-size: 1.25rem;
    }

    .demo-button {
        padding: 1rem 2rem;
        font-size: 1.25rem;
    }

    .progress-dots {
        display: none;
    }

    .presentation-nav {
        bottom: 1rem;
    }

    .presentation-exit,
    .presentation-fullscreen {
        top: 1rem;
    }

    .presentation-exit {
        right: 1rem;
    }

    .presentation-fullscreen {
        right: 3.5rem;
    }

    .presentation-lang {
        top: 1rem;
        left: 1rem;
    }

    .limitations-list {
        flex-direction: column;
        gap: 0.75rem;
    }

    .timeline-item {
        margin: 1rem 0;
        display: block;
    }

    .timeline-line {
        display: none;
    }

    /* DNSSEC components for mobile */
    .dnssec-components {
        gap: 1rem;
    }

    .dnssec-item {
        padding: 1rem;
        min-width: auto;
    }

    .record-type {
        font-size: 1.25rem;
    }

    .record-desc {
        font-size: 0.9rem;
    }

    /* Objective box for mobile */
    .objective-box {
        padding: 1rem;
        margin-top: 1rem;
    }

    .objective-box p {
        font-size: 1rem;
    }

    /* Attack timeline for mobile */
    .attack-item {
        padding: 1rem 1.5rem;
    }

    .attack-year {
        font-size: 1.5rem;
    }

    /* Metrics charts for mobile */
    .charts-container {
        gap: 1.5rem;
    }

    .pie-chart {
        width: 160px;
        height: 160px;
    }

    .chart-wrapper h3 {
        font-size: 1.1rem;
    }

    .metrics-finding {
        padding: 1rem;
    }

    .metrics-finding p {
        font-size: 0.95rem;
    }

    /* Recommendations list for mobile */
    .recommendations-list li {
        font-size: 1rem;
        padding: 0.75rem 0;
    }

    /* Conclusion list for mobile */
    .conclusion-list li {
        font-size: 1.1rem;
        padding: 0.75rem 0 0.75rem 1.5rem;
    }

    /* Methodology for mobile */
    .methodology-list li {
        font-size: 1.1rem;
        padding: 0.5rem 0;
    }

    .methodology-source p {
        font-size: 1rem;
    }

    /* MX slide for mobile */
    .mx-points li {
        font-size: 1rem;
        padding: 0.75rem 1rem;
    }

    .mx-flag {
        height: 100px;
    }

    /* History block for mobile */
    .history-block {
        padding: 1rem;
        margin-bottom: 1rem;
    }

    .history-block p {
        font-size: 1rem;
    }
}


/* Demo Banner Styles */
.demo-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 44px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-bottom: 2px solid var(--accent-cyan);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    z-index: 1100;
    transform: translateY(0);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.demo-banner.hidden {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
}

.demo-banner-text {
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.demo-banner-button {
    background: transparent;
    border: 1px solid var(--text-secondary);
    color: var(--text-primary);
    padding: 0.35rem 1rem;
    border-radius: 4px;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.demo-banner-button:hover {
    background: var(--accent-cyan);
    border-color: var(--accent-cyan);
    color: var(--bg-primary);
}

.demo-banner-arrow {
    transition: transform 0.2s ease;
}

.demo-banner-button:hover .demo-banner-arrow {
    transform: translateX(3px);
}

/* Adjust navbar position when demo banner is visible */
body.demo-mode .navbar {
    top: 44px;
}

body.demo-mode .container.with-navbar {
    padding-top: calc(80px + 44px);
}

/* ==========================================
   QR Code Modal
   ========================================== */

.qr-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.qr-modal.hidden {
    opacity: 0;
    pointer-events: none;
}

.qr-modal-content {
    background: #ffffff;
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: qr-pop-in 0.3s ease;
}

@keyframes qr-pop-in {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.qr-modal.hidden .qr-modal-content {
    animation: none;
}

.qr-close-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.75rem;
    background: none;
    border: none;
    font-size: 2rem;
    color: #666;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s ease;
}

.qr-close-btn:hover {
    color: #000;
}

.qr-image {
    max-width: 300px;
    width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 1rem;
}

.qr-label {
    font-size: 1.1rem;
    color: #333;
    margin: 0 0 0.5rem;
    font-weight: 500;
}

.qr-hint {
    font-size: 0.85rem;
    color: #888;
}

@media (max-width: 480px) {
    .qr-modal-content {
        margin: 1rem;
        padding: 1.5rem;
    }

    .qr-image {
        max-width: 250px;
    }
}