/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Colors */
    --color-primary: #2563eb;
    --color-secondary: #8b5cf6;
    --color-accent: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;

    /* Backgrounds */
    --color-bg-dark: #0f172a;
    --color-bg-card: #1e293b;
    --color-bg-elevated: #334155;

    /* Text */
    --color-text-primary: #f1f5f9;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;

    /* Gradients */
    --gradient-quantum: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-card: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    --shadow-quantum: 0 0 20px rgba(102, 126, 234, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 400ms ease-in-out;

    /* Fonts */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-dark);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; margin-bottom: var(--spacing-lg); }
h3 { font-size: 1.5rem; margin-bottom: var(--spacing-md); }
h4 { font-size: 1.25rem; margin-bottom: var(--spacing-sm); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

code {
    font-family: var(--font-mono);
    background-color: var(--color-bg-elevated);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.9em;
}

/* ===================================
   Layout Components
   =================================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Header */
.header {
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-bg-elevated);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-emoji {
    font-size: 2rem;
    animation: pulse 2s ease-in-out infinite;
}

.logo h1 {
    margin: 0;
    background: var(--gradient-quantum);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.quantum-badge {
    background: var(--gradient-quantum);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: var(--shadow-quantum);
    animation: glow 2s ease-in-out infinite;
}

/* Main */
.main {
    flex: 1;
    padding: var(--spacing-2xl) 0;
}

/* Footer */
.footer {
    background: var(--color-bg-card);
    border-top: 1px solid var(--color-bg-elevated);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.tech-stack {
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.tech-stack strong {
    color: var(--color-text-secondary);
}

/* ===================================
   Configuration Section
   =================================== */
.config-section {
    animation: slideInUp 0.5s ease-out;
}

.variant-selection {
    margin-bottom: var(--spacing-2xl);
}

.variant-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.variant-card {
    background: var(--color-bg-card);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.variant-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-card);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.variant-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.variant-card:hover::before {
    opacity: 1;
}

.variant-card.selected {
    border-color: var(--color-primary);
    background: var(--gradient-card);
    box-shadow: var(--shadow-quantum);
}

.variant-card > * {
    position: relative;
    z-index: 1;
}

.recommended-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--color-accent);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
}

.variant-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.variant-header h4 {
    margin: 0;
    font-size: 1.25rem;
}

.security-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.security-badge.level-1 {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--color-accent);
}

.security-badge.level-3 {
    background-color: rgba(37, 99, 235, 0.2);
    color: var(--color-primary);
}

.security-badge.level-5 {
    background-color: rgba(139, 92, 246, 0.2);
    color: var(--color-secondary);
}

.variant-description {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.variant-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
    font-family: var(--font-mono);
}

/* Message Input */
.message-input-section {
    margin-bottom: var(--spacing-2xl);
}

.hint {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.message-textarea {
    width: 100%;
    min-height: 120px;
    background: var(--color-bg-card);
    border: 2px solid var(--color-bg-elevated);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    resize: vertical;
    transition: border-color var(--transition-base);
}

.message-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.message-textarea::placeholder {
    color: var(--color-text-muted);
}

/* Buttons */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.button-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.125rem;
}

.button-primary {
    background: var(--gradient-quantum);
    color: white;
    box-shadow: var(--shadow-md);
}

.button-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.button-primary:active {
    transform: translateY(0);
}

.button-secondary {
    background: var(--color-bg-card);
    color: var(--color-text-primary);
    border: 2px solid var(--color-bg-elevated);
}

.button-secondary:hover {
    border-color: var(--color-primary);
    background: var(--color-bg-elevated);
}

.button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===================================
   Animation Section
   =================================== */
.animation-section {
    animation: fadeIn 0.5s ease-out;
    margin-top: var(--spacing-2xl);
}

.progress-container {
    margin-bottom: var(--spacing-2xl);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-quantum);
    width: 0%;
    transition: width var(--transition-slow);
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
}

.progress-text {
    text-align: center;
    margin-top: var(--spacing-md);
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* Key Exchange Visualization */
.key-exchange-visual {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    background: var(--color-bg-card);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.entity {
    text-align: center;
    animation: float 3s ease-in-out infinite;
}

.entity-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-quantum);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    box-shadow: var(--shadow-quantum);
}

.entity h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.entity-role {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.entity.alice {
    animation-delay: 0s;
}

.entity.bob {
    animation-delay: 0.5s;
}

/* Channel */
.channel {
    position: relative;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.arrow {
    position: absolute;
    width: 100%;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.arrow-right {
    top: 30%;
}

.arrow-left {
    bottom: 30%;
}

.arrow.active {
    opacity: 1;
}

.arrow-label {
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    background: var(--color-bg-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.arrow-line {
    height: 3px;
    background: var(--gradient-quantum);
    border-radius: var(--radius-sm);
    position: relative;
    animation: arrowSlide 1s ease-out;
}

.arrow-line::after {
    content: '';
    position: absolute;
    right: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 10px solid #764ba2;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}

.arrow.arrow-left .arrow-line::after {
    right: auto;
    left: -10px;
    transform: translateY(-50%) rotate(180deg);
}

.channel-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.shared-secret-icon {
    font-size: 3rem;
    opacity: 0;
    transform: scale(0);
    transition: all var(--transition-slow);
}

.shared-secret-icon.active {
    opacity: 1;
    transform: scale(1);
    animation: pulse 1.5s ease-in-out infinite;
}

/* Step Details */
.step-details {
    background: var(--color-bg-card);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-2xl);
}

.step-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.step-number {
    background: var(--gradient-quantum);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
}

.step-description {
    margin: 0;
    color: var(--color-text-primary);
    font-weight: 500;
}

/* ===================================
   Results Section
   =================================== */
.results-section {
    animation: slideInUp 0.5s ease-out;
    margin-top: var(--spacing-2xl);
}

.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.summary-card {
    background: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base);
}

.summary-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.card-icon {
    font-size: 2rem;
}

.card-content {
    display: flex;
    flex-direction: column;
}

.card-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.card-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

/* Tabs */
.tabs {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.tab-buttons {
    display: flex;
    gap: var(--spacing-sm);
    border-bottom: 2px solid var(--color-bg-elevated);
    margin-bottom: var(--spacing-lg);
    overflow-x: auto;
}

.tab-button {
    background: none;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-text-secondary);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
}

.tab-button:hover {
    color: var(--color-text-primary);
}

.tab-button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-out;
}

.tab-content.active {
    display: block;
}

/* Key Info Grid */
.key-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.info-card {
    background: var(--color-bg-elevated);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}

.info-card h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
    gap: var(--spacing-md);
}

.info-row:last-child {
    margin-bottom: 0;
}

.info-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.info-value {
    font-weight: 600;
    color: var(--color-text-primary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.info-code {
    font-size: 0.75rem;
    word-break: break-all;
    display: block;
    max-width: 100%;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: var(--spacing-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-bg-elevated);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--spacing-lg);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--spacing-xl) - 4px);
    top: 4px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-bg-dark);
}

.timeline-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.timeline-phase {
    font-weight: 600;
    color: var(--color-text-primary);
}

.timeline-actor {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--gradient-quantum);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.timeline-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.timeline-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* Encryption Content */
.encryption-content {
    display: grid;
    gap: var(--spacing-lg);
}

.encryption-item {
    background: var(--color-bg-elevated);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
}

.encryption-item h4 {
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.encryption-value {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    word-break: break-all;
    color: var(--color-text-primary);
}

.no-data {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-muted);
}

/* Statistics Grid */
.statistics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.stat-card {
    background: var(--color-bg-elevated);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
}

.stat-card h4 {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.stat-card .value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    font-family: var(--font-mono);
}

.comparison-note {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--color-warning);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
}

/* ===================================
   Animations
   =================================== */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(102, 126, 234, 0.3); }
    50% { box-shadow: 0 0 40px rgba(102, 126, 234, 0.6); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes arrowSlide {
    from {
        width: 0%;
    }
    to {
        width: 100%;
    }
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1200px) {
    .container {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }

    .logo h1 {
        font-size: 1.5rem;
    }

    .variant-grid {
        grid-template-columns: 1fr;
    }

    .key-exchange-visual {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .channel {
        order: 2;
        height: 150px;
    }

    .entity-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }

    .summary-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .tab-buttons {
        flex-wrap: nowrap;
    }

    .key-info-grid {
        grid-template-columns: 1fr;
    }

    .statistics-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .header {
        padding: var(--spacing-md) 0;
    }

    .logo {
        gap: var(--spacing-sm);
    }

    .logo h1 {
        font-size: 1.25rem;
    }

    .quantum-badge {
        font-size: 0.75rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .summary-cards {
        grid-template-columns: 1fr;
    }

    .variant-stats {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Utility Classes
   =================================== */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.hidden { display: none !important; }

/* ===================================
   View Full Button
   =================================== */
.view-full-btn {
    display: inline-block;
    margin-left: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--gradient-quantum);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.view-full-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.view-full-btn:active {
    transform: translateY(0);
}

/* ===================================
   Modal
   =================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.2s ease-out;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    animation: slideInUp 0.3s ease-out;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-bg-elevated);
}

.modal-header h3 {
    margin: 0;
    color: var(--color-text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 2rem;
    cursor: pointer;
    transition: color var(--transition-fast);
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

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

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-textarea {
    width: 100%;
    min-height: 400px;
    padding: var(--spacing-md);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-bg-elevated);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.6;
    resize: vertical;
    word-break: break-all;
}

.modal-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

#copy-hex-btn {
    margin-top: var(--spacing-md);
    width: 100%;
}

/* Responsive modal */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 95vh;
    }

    .modal-textarea {
        min-height: 300px;
        font-size: 0.75rem;
    }
}