:root {
  /* Core Brand Colors */
  --aibek-bg-primary: #0A0A0B;   /* Deep Void Black */
  --aibek-bg-surface: #121214;   /* Surface Black */
  --aibek-bg-header: #121214;
  --aibek-accent-neon: #00FFFF;  /* Cyan / Aqua 8 */
  --aibek-accent-purple: #00CC7E; /* Secondary Green */

  --aibek-text-primary: #FFFFFF;
  --aibek-text-muted: #A1A1AA;
  --aibek-border-subtle: #333333;
  --aibek-btn-text: #0A0A0B;

  /* Typography */
  --aibek-font-sans: 'Venti DemiBold', 'Inter', -apple-system, sans-serif;
  --aibek-font-heading: 'Anders', 'Montserrat', sans-serif;
  --aibek-font-mono: 'JetBrains Mono', monospace;

  /* UI Tokens */
  --aibek-radius-sm: 4px;
  --aibek-radius-md: 8px;
  --aibek-radius-lg: 16px;
  --aibek-border-glow: 0 0 10px rgba(0, 255, 255, 0.2);
  
  --logo-url: url('/images/logo_white.svg');
}

[data-theme="light"] {
  --aibek-bg-primary: #FFFFFF;
  --aibek-bg-surface: #F3F4F6;
  --aibek-bg-header: #FFFFFF;
  --aibek-accent-neon: #8A2BE2; /* Deep Semantic Purple */
  --aibek-accent-purple: #00FFFF;

  --aibek-text-primary: #121214;
  --aibek-text-muted: #4B5563;
  --aibek-border-subtle: #E5E7EB;
  --aibek-btn-text: #FFFFFF;
  
  --aibek-border-glow: 0 0 10px rgba(138, 43, 226, 0.3);
  --logo-url: url('/images/logo_black.svg');
}

html, body {
    font-family: var(--aibek-font-sans);
    background-color: var(--aibek-bg-primary);
    color: var(--aibek-text-primary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

.nav-link {
    color: var(--aibek-text-primary);
    text-decoration: none;
    transition: color 0.2s ease-in-out, font-weight 0.2s ease-in-out;
}

.nav-link:hover {
    color: var(--aibek-accent-neon);
}

.nav-link.active {
    color: var(--aibek-accent-neon);
    font-weight: 600 !important;
}

.btn-primary {
    color: var(--aibek-btn-text);
    background-color: var(--aibek-accent-neon);
    border: none;
    border-radius: var(--aibek-radius-md);
    padding: 0.5rem 1rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--aibek-border-glow);
    transition: all 0.2s ease-in-out;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.4);
}

.brand-logo {
    content: var(--logo-url);
}

.theme-btn {
    background: transparent;
    border: 1px solid var(--aibek-border-subtle);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--aibek-text-primary);
    transition: all 0.2s ease;
}

.theme-btn:hover {
    border-color: var(--aibek-accent-neon);
    color: var(--aibek-accent-neon);
}

.signup-btn {
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.4rem 1.25rem;
    border-radius: var(--aibek-radius-sm);
    background: transparent;
    color: var(--aibek-text-primary);
    border: 1px solid var(--aibek-border-subtle);
    transition: all 0.2s ease;
}

.signup-btn:hover {
    border-color: var(--aibek-accent-neon);
    color: var(--aibek-accent-neon);
    background: rgba(0, 255, 255, 0.05);
}

.theme-icon {
    display: none;
}

[data-theme-preference="light"] .light-icon { display: block; }
[data-theme-preference="dark"] .dark-icon { display: block; }
[data-theme-preference="system"] .system-icon { display: block; }

/* Agent Thinking Loader Animation Component */
@keyframes aibek-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 255, 255, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(0, 255, 255, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 255, 255, 0);
    }
}

/* CSS Scroll Snapping (SPA Architecture) */
html {
    scroll-behavior: smooth;
}

.scroll-container {
    height: 100vh;
    overflow-y: scroll;
    scroll-snap-type: y mandatory;
    scrollbar-width: none; /* Firefox */
}

/* Hide scrollbar for Chrome, Safari and Opera */
.scroll-container::-webkit-scrollbar {
    display: none;
}

.viewport-section {
    height: 100vh;
    width: 100%;
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    border-bottom: 1px solid var(--aibek-border-subtle);
}

/* Cyberpunk Home Page Styles */
.hero-section {
    position: relative;
    z-index: 10;
}

.system-status {
    font-family: var(--aibek-font-mono);
    font-size: 0.85rem;
    color: var(--aibek-accent-neon);
    letter-spacing: 2px;
    margin-bottom: 1rem;
    display: block;
    opacity: 0.8;
}

.glitch-text {
    font-size: 4.5rem;
    font-family: var(--aibek-font-heading);
    font-weight: 800;
    margin-bottom: 1.5rem;
    position: relative;
    text-shadow: 2px 2px var(--aibek-bg-surface);
}

.subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--aibek-accent-purple);
    margin-bottom: 1rem;
}

.description {
    font-size: 1.25rem;
    color: var(--aibek-text-muted);
    max-width: 800px;
    margin: 0 auto 3rem auto;
    line-height: 1.6;
}

.actions {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--aibek-accent-neon);
    color: var(--aibek-accent-neon);
    border-radius: var(--aibek-radius-md);
    padding: 0.5rem 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.btn-outline:hover {
    background-color: rgba(0, 255, 255, 0.1);
    box-shadow: var(--aibek-border-glow);
}

.glitch-text-sm {
    font-size: 3rem;
    font-family: var(--aibek-font-heading);
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--aibek-text-primary);
    text-shadow: 2px 2px var(--aibek-bg-surface);
}

.segment-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 4rem;
    align-items: center;
}

@media (min-width: 992px) {
    .segment-content {
        flex-direction: row;
        justify-content: space-between;
    }
    .segment-content.reverse {
        flex-direction: row-reverse;
    }
}

.segment-text {
    flex: 1;
    text-align: left;
}

.segment-image-container {
    flex: 1;
    display: flex;
    justify-content: center;
}

.segment-image {
    width: 100%;
    max-width: 600px;
    border-radius: var(--aibek-radius-lg);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border: 1px solid var(--aibek-border-subtle);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.segment-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,255,255,0.15);
}

.enterprise-section { background-color: var(--aibek-bg-surface); }
.government-section { background-color: var(--aibek-bg-primary); }
.startup-section { background-color: var(--aibek-bg-surface); }

.agent-thinking {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--aibek-accent-neon);
    animation: aibek-pulse 2s infinite;
}

/* Basic Layout resets */
.page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 70px); /* Account for header */
}

.content {
    flex: 1;
    overflow: hidden; /* Let the inner container handle scrolling */
}

/* Chat Terminal Section */
.chat-section {
    position: relative;
    background-color: var(--aibek-bg-primary);
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.chat-container {
    width: 100%;
    max-width: 800px;
    height: 500px;
    margin: 0 auto;
    border: 1px solid var(--aibek-border-subtle);
    border-radius: var(--aibek-radius-md);
    background-color: var(--aibek-bg-surface);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Expanded state applied via JS when scrolled into full view */
.chat-container.expanded {
    position: fixed;
    bottom: 5vh;
    left: 50%;
    transform: translateX(-50%);
    width: 90vw;
    height: 90vh;
    max-width: 1400px;
    border-radius: var(--aibek-radius-md);
    border: 1px solid var(--aibek-accent-neon);
    box-shadow: 0 10px 50px rgba(0, 255, 255, 0.15);
    z-index: 2000;
}

.chat-header {
    background-color: var(--aibek-bg-header);
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--aibek-border-subtle);
}

.chat-body {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    font-family: var(--aibek-font-sans);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chat-input-area {
    padding: 1rem;
    border-top: 1px solid var(--aibek-border-subtle);
    background-color: var(--aibek-bg-surface);
    display: flex;
    gap: 0.5rem;
}