/* =========================================================================
   1. TOKENS & SYSTEM CORE SETUP
   ========================================================================= */
:root {
    --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* System Light Engine Tokens */
    --surface-bg: #f8fafc;
    --dock-bg: rgba(255, 255, 255, 0.7);
    --dock-border: rgba(255, 255, 255, 0.6);
    --card-bg: rgba(255, 255, 255, 0.65);
    --card-border: rgba(241, 245, 249, 0.8);
    
    --text-primary: #0f172a;
    --text-muted: #475569;
    
    --accent-glow: #3b82f6;
    --accent-glow-rgb: 59, 130, 246;
    --accent-neon: #00e5ff;
    --grid-color: rgba(15, 23, 42, 0.04);
}

[data-theme="dark"] {
    /* System Dark Engine Tokens */
    --surface-bg: #090d16;
    --dock-bg: rgba(13, 20, 35, 0.65);
    --dock-border: rgba(255, 255, 255, 0.06);
    --card-bg: rgba(17, 25, 43, 0.45);
    --card-border: rgba(255, 255, 255, 0.04);
    
    --text-primary: #f8fafc;
    --text-muted: #94a3b8;
    
    --accent-glow: #3b82f6;
    --accent-glow-rgb: 59, 130, 246;
    --accent-neon: #00e5ff;
    --grid-color: rgba(255, 255, 255, 0.02);
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--surface-bg);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    transition: background-color 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* =========================================================================
   2. IMMERSIVE COMPLIANCE BACKGROUND SYSTEM
   ========================================================================= */
.tech-bg-grid {
    position: fixed;
    inset: 0;
    z-index: -2;
    background-image: 
        linear-gradient(to right, var(--grid-color) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-color) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.glow-orb {
    position: fixed;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -1;
    opacity: 0.15;
    pointer-events: none;
    transition: all 0.5s ease;
}

[data-theme="dark"] .glow-orb {
    opacity: 0.25;
}

.glow-orb.field-1 {
    top: -10%;
    right: -5%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
}

.glow-orb.field-2 {
    bottom: -10%;
    left: -10%;
    background: radial-gradient(circle, var(--accent-neon) 0%, transparent 70%);
}

/* =========================================================================
   3. MODERN DOCK GLASS NAVIGATION
   ========================================================================= */
.glass-dock-wrapper {
    position: fixed;
    top: 1.5rem;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 0 1rem;
}

.glass-dock {
    max-width: 900px;
    margin: 0 auto;
    background: var(--dock-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--dock-border);
    padding: 0.6rem 1.2rem;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 12px 40px -10px rgba(0, 0, 0, 0.08);
}

.brand-zone {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.logo-accent {
    color: var(--accent-glow);
}

.logo-text {
    opacity: 0.8;
}

.nav-pill-group {
    display: flex;
    gap: 0.25rem;
    background: rgba(0, 0, 0, 0.03);
    padding: 0.25rem;
    border-radius: 50px;
}

[data-theme="dark"] .nav-pill-group {
    background: rgba(255, 255, 255, 0.03);
}

.nav-pill {
    background: transparent;
    border: none;
    font-family: var(--font-primary);
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.5rem 1.1rem;
    border-radius: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-pill .pill-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: transparent;
    transition: all 0.3s ease;
}

.nav-pill:hover {
    color: var(--text-primary);
}

.nav-pill.active {
    background: var(--surface-bg);
    color: var(--text-primary);
    box-shadow: 0 4px 12px -2px rgba(0, 0, 0, 0.05);
}

.nav-pill.active .pill-dot {
    background: var(--accent-glow);
    box-shadow: 0 0 8px var(--accent-glow);
}

.action-circle-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--dock-border);
    background: var(--surface-bg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.action-circle-btn:hover {
    transform: scale(1.05);
}

/* =========================================================================
   4. LAYOUT GRID SYSTEM & STRUCTURES
   ========================================================================= */
.page-view {
    display: none;
    padding-top: 8rem;
    animation: fadeInView 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.page-view.active {
    display: block;
}

@keyframes fadeInView {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-blade {
    padding: 3rem 0;
    margin-bottom: 2rem;
}

.tagline {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent-glow);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.hero-blade h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.hero-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.portal-grid {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 3rem;
    align-items: flex-start;
}

/* =========================================================================
   5. STICKY GLASS CONTEXTUAL PANES
   ========================================================================= */
.sticky-nav-pane {
    position: sticky;
    top: 7rem;
}

.pane-glass {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 1.5rem;
    border-radius: 20px;
}

.scroll-spy-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.spy-link {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 0.8rem;
    border-radius: 8px;
    border-left: 2px solid transparent;
    transition: all 0.2s ease;
}

.spy-link:hover {
    color: var(--text-primary);
    background: rgba(var(--accent-glow-rgb), 0.04);
}

.spy-link.active {
    color: var(--accent-glow);
    font-weight: 600;
    background: rgba(var(--accent-glow-rgb), 0.06);
    border-left-color: var(--accent-glow);
}

/* =========================================================================
   6. PREMIUM CARD CONTENT MODULES
   ========================================================================= */
.content-display-pane {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding-bottom: 6rem;
}

.content-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 2.5rem;
    border-radius: 24px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.01);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.content-card h2 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 1rem;
}

.content-card p {
    color: var(--text-muted);
    margin-bottom: 1.2rem;
}

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

/* Custom Callout Accents */
.glow-callout {
    position: relative;
    background: rgba(var(--accent-glow-rgb), 0.04);
    border: 1px solid rgba(var(--accent-glow-rgb), 0.1);
    padding: 1.25rem 1.5rem;
    border-radius: 14px;
    margin: 1.5rem 0;
    display: flex;
    gap: 1rem;
}

.callout-indicator {
    width: 4px;
    background: var(--accent-glow);
    border-radius: 4px;
    flex-shrink: 0;
}

.glow-callout p {
    color: var(--text-primary);
    font-size: 0.95rem;
    margin: 0;
}

.technical-blockquote {
    border-left: 3px solid var(--text-muted);
    padding-left: 1.25rem;
    margin: 1.5rem 0;
    color: var(--text-muted);
    font-style: italic;
}

/* =========================================================================
   7. INTERACTIVE SYSTEM COMPONENT FOOTER
   ========================================================================= */
.glass-footer {
    border-top: 1px solid var(--card-border);
    background: var(--dock-bg);
    backdrop-filter: blur(10px);
    padding: 2rem 0;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* =========================================================================
   8. RESPONSIVE GRID OVERRIDES
   ========================================================================= */
@media (max-width: 960px) {
    .portal-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .sticky-nav-pane {
        position: relative;
        top: 0;
    }
    .glass-dock {
        border-radius: 24px;
        flex-direction: column;
        gap: 0.75rem;
        padding: 1rem;
    }
    .nav-pill-group {
        flex-wrap: wrap;
        justify-content: center;
    }
    .page-view {
        padding-top: 12rem;
    }
}