/* BGP Convergence Automaton - Visual Identity */
/* Two-Tier Experience: Gallery Hero (static) + Live Field (opt-in) */

:root {
    /* Dark cosmic theme */
    --bg-deep: #0a0a0f;
    --bg-surface: #12121a;
    --bg-elevated: #1a1a24;
    
    /* Protocol-inspired palette */
    --color-p0: #ff4d4d;       /* P0 Identity - Red */
    --color-p1: #4dff4d;       /* P1 Momentum - Green */
    --color-p2: #4d4dff;       /* P2 Temperature - Blue */
    
    /* Accent colors */
    --accent-primary: #00ffcc;
    --accent-secondary: #ff00aa;
    --accent-warn: #ffcc00;
    
    /* Ghost/spectral colors */
    --ghost-primary: rgba(0, 255, 204, 0.3);
    --ghost-secondary: rgba(255, 0, 170, 0.2);
    --snap-flash: rgba(255, 255, 255, 0.8);
    
    /* Text */
    --text-primary: #e0e0e0;
    --text-secondary: #808090;
    --text-muted: #505060;
    
    /* Typography */
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    --font-sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================================================
   GALLERY HERO (Tier 1 - Default, Static, No WebSocket)
   ============================================================================ */

.gallery-hero {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background: var(--bg-deep);
}

.hero-media {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-media video,
.hero-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.9;
}

/* Fallback animated background when no hero media exists */
.hero-fallback {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0a0f 0%, #12121a 50%, #0a0a0f 100%);
    position: relative;
    overflow: hidden;
}

.fallback-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(0, 255, 204, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(255, 0, 170, 0.06) 0%, transparent 40%),
        linear-gradient(90deg, rgba(0, 255, 204, 0.03) 1px, transparent 1px),
        linear-gradient(rgba(0, 255, 204, 0.03) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 40px 40px, 40px 40px;
    animation: grid-pulse 4s ease-in-out infinite;
}

@keyframes grid-pulse {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(
        180deg,
        rgba(10, 10, 15, 0.3) 0%,
        rgba(10, 10, 15, 0.6) 50%,
        rgba(10, 10, 15, 0.9) 100%
    );
    padding: var(--space-xl);
}

.hero-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.hero-title h1 {
    font-family: var(--font-mono);
    font-size: clamp(1.5rem, 5vw, 3rem);
    font-weight: 300;
    color: var(--accent-primary);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
    text-shadow: 0 0 30px rgba(0, 255, 204, 0.5);
}

.hero-subtitle {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--text-secondary);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

/* Enter Live Field Button */
.enter-live-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg) var(--space-xl);
    background: rgba(0, 255, 204, 0.1);
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.enter-live-button:hover {
    background: var(--accent-primary);
    color: var(--bg-deep);
    box-shadow: 0 0 60px rgba(0, 255, 204, 0.6);
    transform: scale(1.02);
}

.enter-live-button .btn-icon {
    font-size: 2rem;
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { 
        text-shadow: 0 0 10px currentColor;
        transform: scale(1);
    }
    50% { 
        text-shadow: 0 0 30px currentColor;
        transform: scale(1.1);
    }
}

.enter-live-button .btn-text {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.1em;
}

.enter-live-button .btn-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0.8;
}

.enter-live-button:hover .btn-hint {
    color: var(--bg-deep);
    opacity: 0.7;
}

/* Hero buttons container */
.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    align-items: center;
    margin-bottom: var(--space-xl);
}

/* Gallery perturb button */
.perturb-button-gallery {
    background: transparent;
    border: 1px solid var(--accent-secondary);
    color: var(--accent-secondary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: lowercase;
    letter-spacing: 0.1em;
}

.perturb-button-gallery:hover {
    background: var(--accent-secondary);
    color: var(--bg-deep);
    box-shadow: 0 0 30px rgba(255, 0, 170, 0.4);
}

/* My Scar badge */
.my-scar-badge {
    position: fixed;
    top: var(--space-md);
    right: var(--space-md);
    background: rgba(10, 10, 15, 0.9);
    border: 1px solid var(--accent-secondary);
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    z-index: 500;
    animation: badge-appear 0.5s ease-out;
}

@keyframes badge-appear {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.my-scar-badge .scar-glyph {
    font-size: 1.2rem;
    margin: 0;
    animation: none;
}

.my-scar-badge .scar-id {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin: 0;
}

/* Scar permalink */
.scar-permalink {
    display: block;
    margin-top: var(--space-md);
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-decoration: underline;
}

.scar-permalink:hover {
    color: var(--accent-secondary);
}

/* Live Status Indicator */
.live-status {
    position: absolute;
    bottom: var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.status-dot.online {
    background: var(--color-p1);
    box-shadow: 0 0 10px var(--color-p1);
    animation: blink 1s infinite;
}

.status-dot.offline {
    background: var(--text-muted);
}

.status-dot.connecting {
    background: var(--accent-warn);
    animation: blink 0.5s infinite;
}

.status-dot.connected {
    background: var(--color-p1);
    box-shadow: 0 0 10px var(--color-p1);
}

.status-dot.disconnected,
.status-dot.error {
    background: var(--color-p0);
}

.status-dot.reconnecting {
    background: var(--accent-warn);
    animation: blink 0.5s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ============================================================================
   LIVE FIELD (Tier 2 - Opt-in, WebSocket Streaming)
   ============================================================================ */

.live-field {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

#field {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-deep);
}

/* Overlay */
#overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--space-md);
}

/* Live Controls */
.live-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    pointer-events: auto;
}

.control-btn {
    background: rgba(10, 10, 15, 0.8);
    border: 1px solid var(--bg-elevated);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    transition: all 0.3s ease;
}

.control-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Ghost and bandwidth toggles */
.ghost-toggle,
.bandwidth-toggle {
    display: flex;
    align-items: center;
}

.ghost-toggle label,
.bandwidth-toggle label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    cursor: pointer;
}

.ghost-toggle input[type="checkbox"],
.bandwidth-toggle input[type="checkbox"] {
    accent-color: var(--accent-primary);
}

/* Ghost density indicator */
.ghost-density {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    background: rgba(10, 10, 15, 0.8);
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--bg-elevated);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.ghost-density.low {
    color: rgba(0, 255, 204, 0.6);
    border-color: rgba(0, 255, 204, 0.3);
}

.ghost-density.medium {
    color: var(--accent-primary);
    border-color: rgba(0, 255, 204, 0.5);
    box-shadow: 0 0 8px rgba(0, 255, 204, 0.2);
}

.ghost-density.high {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 15px rgba(0, 255, 204, 0.4);
    animation: ghost-pulse 1.5s ease-in-out infinite;
}

@keyframes ghost-pulse {
    0%, 100% { box-shadow: 0 0 15px rgba(0, 255, 204, 0.4); }
    50% { box-shadow: 0 0 25px rgba(0, 255, 204, 0.7); }
}

.density-count {
    font-weight: 600;
    color: inherit;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: rgba(10, 10, 15, 0.8);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--bg-elevated);
}

/* Death message */
.death-message {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--text-muted);
    opacity: 0;
    transition: opacity 3s ease-in-out;
    text-align: center;
    letter-spacing: 0.05em;
    max-width: 80vw;
    pointer-events: none;
}

.death-message.visible {
    opacity: 1;
}

.death-message.hidden {
    display: none;
}

/* Snap flash effect */
.snap-flash {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--snap-flash);
    opacity: 0;
    pointer-events: none;
    z-index: 1000;
}

.snap-flash.active {
    animation: snap-pulse 0.3s ease-out;
}

@keyframes snap-pulse {
    0% { opacity: 0.6; }
    100% { opacity: 0; }
}

/* Perturb button */
.perturb-button {
    pointer-events: auto;
    background: transparent;
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: lowercase;
    letter-spacing: 0.1em;
    position: relative;
    overflow: hidden;
    align-self: center;
    margin-bottom: var(--space-xl);
}

.perturb-button:hover {
    background: var(--accent-primary);
    color: var(--bg-deep);
    box-shadow: 0 0 30px rgba(0, 255, 204, 0.4);
}

.perturb-button:active {
    transform: scale(0.98);
}

/* Scar modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    pointer-events: auto;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-elevated);
    border: 1px solid var(--accent-primary);
    padding: var(--space-xl);
    text-align: center;
    max-width: 400px;
    position: relative;
}

.scar-glyph {
    font-size: 4rem;
    margin-bottom: var(--space-md);
    animation: glow-pulse 2s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { text-shadow: 0 0 20px currentColor; }
    50% { text-shadow: 0 0 40px currentColor, 0 0 60px currentColor; }
}

.scar-id {
    font-family: var(--font-mono);
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.scar-message {
    color: var(--accent-primary);
    margin-bottom: var(--space-sm);
}

.scar-edition {
    font-family: var(--font-mono);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.focus-button {
    margin-top: var(--space-lg);
    background: transparent;
    border: 1px solid var(--accent-secondary);
    color: var(--accent-secondary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    transition: all 0.3s ease;
}

.focus-button:hover {
    background: var(--accent-secondary);
    color: var(--bg-deep);
}

.close-button {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-xs);
    line-height: 1;
}

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

/* Scroll indicator */
.scroll-indicator {
    position: fixed;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    font-size: 1.5rem;
    animation: bounce 2s infinite;
    pointer-events: none;
    z-index: 100;
    transition: opacity 0.3s ease;
}

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

/* ============================================================================
   CONTENT SECTIONS
   ============================================================================ */

section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-xl);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

/* Explanation section */
.explanation {
    background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-surface) 100%);
}

.explanation h2 {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 300;
    margin-bottom: var(--space-xl);
    color: var(--accent-primary);
}

.facts {
    list-style: none;
    font-family: var(--font-mono);
    font-size: 1.1rem;
    margin-bottom: var(--space-xl);
}

.facts li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--bg-elevated);
    color: var(--text-secondary);
}

.facts li::before {
    content: '→ ';
    color: var(--accent-primary);
}

.description {
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.persistence-note {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
    border-left: 2px solid var(--accent-primary);
    padding-left: var(--space-md);
    opacity: 0.8;
}

/* Proof section */
.proof-section {
    background: var(--bg-surface);
}

.proof-section h2 {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.sniffer-output {
    background: var(--bg-deep);
    border: 1px solid var(--bg-elevated);
    padding: var(--space-md);
    margin-bottom: var(--space-lg);
    max-height: 300px;
    overflow: auto;
}

.sniffer-output pre {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-p1);
    white-space: pre-wrap;
    word-break: break-all;
}

.proof-links {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.proof-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--accent-primary);
    transition: all 0.3s ease;
    background: transparent;
    cursor: pointer;
}

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

/* Ethics section */
.ethics-section {
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-deep) 100%);
}

.ethics-section h2 {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 300;
    margin-bottom: var(--space-xl);
    color: var(--text-muted);
    letter-spacing: 0.1em;
}

.ethics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.ethics-item h3 {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.ethics-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Stats footer */
.stats-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--bg-elevated);
    padding: var(--space-md);
    min-height: auto;
}

.stats {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

.stat {
    color: var(--text-muted);
}

.stat span {
    color: var(--accent-primary);
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 768px) {
    .enter-live-button {
        padding: var(--space-md) var(--space-lg);
    }
    
    .enter-live-button .btn-icon {
        font-size: 1.5rem;
    }
    
    .enter-live-button .btn-text {
        font-size: 0.9rem;
    }
    
    .live-controls {
        flex-wrap: wrap;
        gap: var(--space-sm);
    }
    
    .perturb-button {
        font-size: 0.8rem;
        padding: var(--space-sm) var(--space-md);
    }
    
    .explanation h2 {
        font-size: 1.5rem;
    }
    
    .modal-content {
        margin: var(--space-md);
        padding: var(--space-lg);
    }
    
    .scar-glyph {
        font-size: 3rem;
    }
    
    .stats {
        gap: var(--space-md);
    }
}

/* ============================================================================
   UTILITIES
   ============================================================================ */

.hidden {
    display: none !important;
}

/* Scar colors */
.scar-color-0 { color: #ff6464; }
.scar-color-1 { color: #64ff64; }
.scar-color-2 { color: #6464ff; }
.scar-color-3 { color: #ffff64; }
.scar-color-4 { color: #ff64ff; }
.scar-color-5 { color: #64ffff; }
.scar-color-6 { color: #ffb464; }
.scar-color-7 { color: #b464ff; }