/* ==========================================================================
   Zero Resistance Superconductors — Professional Corporate Design System
   ========================================================================== */

:root {
    --bg-primary:        #020408;
    --bg-surface:        rgba(8, 14, 32, 0.90);
    --bg-surface-hover:  rgba(12, 20, 46, 0.96);
    --bg-glass:          rgba(10, 18, 42, 0.78);

    --primary:           #00e5ff;
    --primary-dim:       rgba(0, 229, 255, 0.18);
    --primary-glow:      rgba(0, 229, 255, 0.30);
    --secondary:         #3b82f6;
    --secondary-dim:     rgba(59, 130, 246, 0.15);
    --accent:            #7c3aed;

    --text-primary:      #f1f5f9;
    --text-secondary:    #94a3b8;
    --text-muted:        #64748b;

    --border-color:      rgba(0, 229, 255, 0.15);
    --border-mid:        rgba(0, 229, 255, 0.30);
    --border-bright:     rgba(0, 229, 255, 0.55);

    --radius-xs: 6px;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;

    --font-heading: 'Outfit', -apple-system, sans-serif;
    --font-body:    'Inter',  -apple-system, sans-serif;
    --font-mono:    'JetBrains Mono', monospace;

    --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in:   cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.28s var(--ease-in);

    --shadow-sm:  0 4px 12px rgba(0,0,0,0.35);
    --shadow-md:  0 12px 32px rgba(0,0,0,0.45);
    --shadow-lg:  0 24px 56px rgba(0,0,0,0.55);
    --shadow-glow: 0 0 30px var(--primary-glow);
}

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

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.65;
    overflow-x: hidden;
    min-height: 100vh;
}

img { display: block; max-width: 100%; }
a  { color: inherit; }

h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

p { color: var(--text-secondary); }
li { color: var(--text-secondary); }

/* ──────────────────────────────────────────────────────
   Background Canvas
   ────────────────────────────────────────────────────── */
#quantum-canvas {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* ──────────────────────────────────────────────────────
   Typography Utilities
   ────────────────────────────────────────────────────── */
.gradient-text {
    background: linear-gradient(135deg, #ffffff 0%, var(--primary) 45%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.page-container { padding-top: 100px; }

section { padding: 5rem 0; }

/* ──────────────────────────────────────────────────────
   Navigation
   ────────────────────────────────────────────────────── */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 3.5rem;
    z-index: 1000;
    background: rgba(2, 4, 8, 0.82);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.navbar.scrolled {
    height: 68px;
    background: rgba(2, 4, 8, 0.97);
    box-shadow: 0 8px 32px rgba(0,0,0,0.6);
}

/* Brand / Logo */
.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    text-decoration: none;
    flex-shrink: 0;
}

.brand-logo {
    height: 46px;
    width: auto;
    object-fit: contain;
    filter: none;
    transition: opacity 0.2s;
}
.brand-logo:hover { opacity: 0.85; }

.brand-text { display: flex; flex-direction: column; }

.brand-title {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: 1.8px;
    color: var(--text-primary);
    line-height: 1.1;
}

.brand-subtitle {
    font-size: 0.58rem;
    letter-spacing: 2.5px;
    color: var(--primary);
    text-transform: uppercase;
    font-weight: 600;
    margin-top: 2px;
}

/* Desktop nav links */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.45rem 0.85rem;
    border-radius: var(--radius-xs);
    transition: var(--transition);
    white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
    color: var(--primary);
    background: var(--primary-dim);
}

.nav-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: #020408 !important;
    font-weight: 700;
    padding: 0.55rem 1.35rem;
    border-radius: var(--radius-xs);
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 0 18px var(--primary-glow);
    font-size: 0.9rem;
    white-space: nowrap;
}
.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 28px rgba(0,229,255,0.55);
}

/* Mobile toggle */
.mobile-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.55rem 0.75rem;
    border-radius: var(--radius-xs);
    transition: var(--transition);
}
.mobile-toggle:hover { border-color: var(--primary); color: var(--primary); }

/* ──────────────────────────────────────────────────────
   Buttons
   ────────────────────────────────────────────────────── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: #020408;
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0.85rem 2rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: 0 0 22px var(--primary-glow);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 36px rgba(0,229,255,0.65);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: transparent;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.85rem 2rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid var(--border-mid);
}
.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-dim);
    transform: translateY(-2px);
}

/* ──────────────────────────────────────────────────────
   Glass Panel
   ────────────────────────────────────────────────────── */
.glass-panel {
    background: var(--bg-surface);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}
.glass-panel:hover {
    border-color: var(--border-mid);
    box-shadow: var(--shadow-lg), 0 0 0 1px var(--primary-dim);
}

/* ──────────────────────────────────────────────────────
   Section Header
   ────────────────────────────────────────────────────── */
.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 3.5rem;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--primary);
    background: var(--primary-dim);
    border: 1px solid var(--border-color);
    padding: 0.3rem 0.9rem;
    border-radius: 50px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* ──────────────────────────────────────────────────────
   Info Badge
   ────────────────────────────────────────────────────── */
.info-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--primary-dim);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--primary);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

/* ──────────────────────────────────────────────────────
   Hero Section
   ────────────────────────────────────────────────────── */
.hero-section {
    padding: 5.5rem 0 6rem;
    text-align: center;
    position: relative;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.45rem 1.1rem;
    background: var(--primary-dim);
    border: 1px solid var(--border-mid);
    border-radius: 50px;
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 1.75rem;
}

.hero-badge { /* alias */ }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.45rem 1.1rem;
    background: var(--primary-dim);
    border: 1px solid var(--border-mid);
    border-radius: 50px;
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 1.75rem;
}

.hero-title {
    font-size: clamp(2.6rem, 5.5vw, 4.2rem);
    letter-spacing: -1.5px;
    margin-bottom: 1.5rem;
    max-width: 980px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 740px;
    margin: 0 auto 2.75rem;
    line-height: 1.8;
}

.hero-ctas {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    flex-wrap: wrap;
    margin-bottom: 4.5rem;
}

/* Metric cards */
.hero-metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.metric-card {
    background: var(--bg-surface);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.75rem 1.5rem;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.metric-card::before {
    content: '';
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}
.metric-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-mid);
    box-shadow: var(--shadow-glow);
}

.metric-icon { font-size: 1.6rem; color: var(--primary); margin-bottom: 0.85rem; }
.metric-number {
    font-family: var(--font-mono);
    font-size: 2.4rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1;
    margin-bottom: 0.4rem;
}
.metric-label { font-size: 0.9rem; font-weight: 600; color: var(--primary); margin-bottom: 0.3rem; }
.metric-sub   { font-size: 0.78rem; color: var(--text-muted); line-height: 1.4; }

/* ──────────────────────────────────────────────────────
   Comparison Matrix (Copper vs HTS)
   ────────────────────────────────────────────────────── */
.compare-matrix-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 2.5rem;
    align-items: start;
    margin-bottom: 5rem;
}

.compare-row {
    background: rgba(2, 4, 8, 0.70);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
    margin-bottom: 1.1rem;
    transition: var(--transition);
}
.compare-row:hover { border-color: var(--border-mid); }
.compare-row:last-child { margin-bottom: 0; }

.compare-row-header { display: flex; align-items: flex-start; gap: 0.85rem; margin-bottom: 1.1rem; }
.compare-row-icon   { font-size: 1.25rem; color: var(--primary); flex-shrink: 0; margin-top: 2px; }
.compare-row-title  { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 0.2rem; }
.compare-row-sub    { font-size: 0.82rem; color: var(--text-muted); line-height: 1.5; }

.bar-pair { display: flex; flex-direction: column; gap: 0.55rem; }
.bar-item { display: flex; align-items: center; gap: 0.85rem; }
.bar-label { width: 38px; font-weight: 700; font-size: 0.82rem; font-family: var(--font-mono); flex-shrink: 0; }
.bar-label.cu  { color: #38bdf8; }
.bar-label.hts { color: var(--primary); }

.bar-track {
    flex-grow: 1;
    height: 20px;
    background: rgba(255,255,255,0.06);
    border-radius: 4px;
    overflow: visible;
    position: relative;
}
/* Clip the fill itself (not the track) so bar-value-outside can escape */
.bar-track .bar-fill {
    overflow: hidden;
}
.bar-fill {
    height: 100%;
    border-radius: 4px;
    display: flex;
    align-items: center;
    padding: 0 0.5rem;
    font-size: 0.73rem;
    font-weight: 700;
    white-space: nowrap;
    overflow: visible;
    position: relative;
    transition: width 1s cubic-bezier(0.16,1,0.3,1);
}
.bar-fill.cu {
    background: linear-gradient(90deg, #0369a1, #38bdf8);
    color: #020408;
    justify-content: flex-end;
}
.bar-fill.hts {
    background: linear-gradient(90deg, #00b4cc, var(--primary));
    color: #020408;
    justify-content: flex-end;
    box-shadow: 0 0 12px rgba(0,229,255,0.35);
}
/* For very narrow bars — label placed after the bar */
.bar-value-outside {
    position: absolute;
    left: calc(100% + 6px);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 0.73rem;
    font-weight: 700;
    white-space: nowrap;
    font-family: var(--font-mono);
}

/* Sector pills */
.sector-cloud { display: flex; flex-wrap: wrap; gap: 0.65rem; }
.sector-pill {
    background: rgba(8,14,32,0.75);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    transition: var(--transition);
    cursor: default;
}
.sector-pill:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-dim);
    transform: translateY(-2px);
}

/* ──────────────────────────────────────────────────────
   Demand Chart
   ────────────────────────────────────────────────────── */
.demand-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 2.5rem;
    align-items: center;
    margin-bottom: 5rem;
}

.demand-chart-wrap {
    background: rgba(2, 4, 8, 0.75);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.75rem 1.75rem 1.25rem;
}

.demand-y-labels {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-end;
    height: 220px;
    padding-bottom: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    min-width: 52px;
    flex-shrink: 0;
}

.demand-bars-area {
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    gap: 1.5rem;
    height: 220px;
    flex-grow: 1;
    position: relative;
}

/* Horizontal grid lines */
.demand-bars-area::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(
            to top,
            transparent 0px,
            transparent calc(220px / 5 - 1px),
            rgba(255,255,255,0.04) calc(220px / 5 - 1px),
            rgba(255,255,255,0.04) calc(220px / 5)
        );
    pointer-events: none;
}

.demand-chart-inner {
    display: flex;
    gap: 0;
    align-items: flex-end;
    width: 100%;
    height: 220px;
}

.demand-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    flex: 1;
}

.demand-col-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--primary);
    font-weight: 600;
}

.stacked-bar-container {
    width: 70%;
    display: flex;
    flex-direction: column;
    border-radius: 6px 6px 0 0;
    overflow: hidden;
    transition: transform 0.3s ease;
}
.stacked-bar-container:hover { transform: scaleY(1.03); transform-origin: bottom; }

.stack-segment {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    color: rgba(255,255,255,0.9);
    min-height: 18px;
}
.stack-segment.fusion  { background: linear-gradient(180deg, #1d4ed8, #2563eb); }
.stack-segment.cables  { background: linear-gradient(180deg, #c2410c, #ea580c); }
.stack-segment.magnets { background: linear-gradient(180deg, #475569, #64748b); }

.demand-year {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-muted);
}
.demand-year.active { color: var(--text-primary); }

.demand-legend {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.25rem;
    justify-content: center;
    flex-wrap: wrap;
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
}
.legend-dot { width: 10px; height: 10px; border-radius: 3px; }

/* ──────────────────────────────────────────────────────
   Feature Cards (Homepage Grid)
   ────────────────────────────────────────────────────── */
.milestone-strip {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.8rem;
    margin: 0 auto 2.5rem;
    max-width: 980px;
}

.milestone-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 0.95rem;
    border-radius: 999px;
    background: rgba(2, 4, 8, 0.72);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.84rem;
    font-weight: 600;
}

.milestone-pill i { color: var(--primary); }

.pages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.75rem;
    margin-bottom: 5rem;
}

.feature-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.feature-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-mid);
    box-shadow: var(--shadow-lg), 0 0 20px var(--primary-dim);
}

.feature-img-wrapper { height: 200px; overflow: hidden; position: relative; }
.feature-img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.5s var(--ease-out);
}
.feature-card:hover .feature-img { transform: scale(1.07); }

.feature-content { padding: 1.75rem; display: flex; flex-direction: column; flex-grow: 1; }
.feature-title   { font-size: 1.3rem; margin-bottom: 0.75rem; }
.feature-desc    { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 1.5rem; flex-grow: 1; line-height: 1.65; }
.feature-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--primary);
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    transition: var(--transition);
    width: fit-content;
}
.feature-link:hover { gap: 0.75rem; color: #fff; }

/* ──────────────────────────────────────────────────────
   Inner Page — Tech Split
   ────────────────────────────────────────────────────── */
.spec-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.spec-card {
    padding: 1.75rem;
}

.spec-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.9rem;
}

.spec-card ul {
    padding-left: 1.1rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

.spec-icon {
    font-size: 1.45rem;
    color: var(--primary);
    margin-bottom: 0.8rem;
}

.tech-split-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 5rem;
}

.tech-media-box {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
}
.tech-media-box img { width: 100%; height: 420px; object-fit: cover; display: block; }

/* ──────────────────────────────────────────────────────
   REBCO Layer Explorer
   ────────────────────────────────────────────────────── */
.layer-explorer-container {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 2rem;
}

.layer-list { display: flex; flex-direction: column; gap: 0.85rem; }

.layer-item {
    background: rgba(8,14,32,0.75);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem 1.25rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.layer-item:hover, .layer-item.active {
    background: var(--primary-dim);
    border-color: var(--primary);
}

.layer-item-title { font-weight: 600; font-size: 0.9rem; color: var(--text-primary); }
.layer-item-thick { font-family: var(--font-mono); font-size: 0.8rem; color: var(--primary); flex-shrink: 0; margin-left: 0.5rem; }

.layer-detail-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2.25rem;
}

.detail-specs-list {
    list-style: none;
    margin-top: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.detail-specs-list li {
    background: rgba(2,4,8,0.65);
    padding: 0.8rem 1.1rem;
    border-radius: var(--radius-xs);
    border-left: 3px solid var(--primary);
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.detail-specs-list li strong { color: #fff; }

/* ──────────────────────────────────────────────────────
   Applications Filter & Grid
   ────────────────────────────────────────────────────── */
.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: rgba(8,14,32,0.75);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.6rem 1.25rem;
    border-radius: 50px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active {
    background: var(--primary);
    color: #020408;
    border-color: var(--primary);
    box-shadow: 0 0 16px var(--primary-glow);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 5rem;
}

.app-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.app-card:hover { transform: translateY(-4px); border-color: var(--border-mid); box-shadow: var(--shadow-md), 0 0 16px var(--primary-dim); }

.app-card-icon   { font-size: 2rem; color: var(--primary); margin-bottom: 1.1rem; }
.app-card-title  { font-size: 1.25rem; margin-bottom: 0.65rem; }
.app-card-desc   { color: var(--text-secondary); font-size: 0.92rem; margin-bottom: 1.5rem; flex-grow: 1; line-height: 1.65; }
.app-card-metrics { display: flex; justify-content: space-between; align-items: center; padding-top: 1rem; border-top: 1px solid rgba(255,255,255,0.07); font-size: 0.82rem; }
.app-card-tag    { color: var(--primary); font-weight: 700; font-family: var(--font-mono); }

/* ──────────────────────────────────────────────────────
   Calculator
   ────────────────────────────────────────────────────── */
.calc-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; }
.calc-controls { display: flex; flex-direction: column; gap: 1.75rem; }
.calc-field { display: flex; flex-direction: column; gap: 0.65rem; }
.calc-field-header { display: flex; justify-content: space-between; font-weight: 600; font-size: 0.92rem; color: var(--text-primary); }
.calc-field-val { font-family: var(--font-mono); color: var(--primary); font-size: 1rem; }

.calc-slider {
    width: 100%;
    accent-color: var(--primary);
    height: 6px;
    cursor: pointer;
    background: rgba(255,255,255,0.08);
    border-radius: 3px;
    -webkit-appearance: none;
    outline: none;
}
.calc-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px; height: 18px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 8px var(--primary-glow);
}

.calc-results { display: flex; flex-direction: column; gap: 1.25rem; }
.result-box {
    background: rgba(2,4,8,0.75);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1.35rem 1.5rem;
}
.result-box.highlight { border-color: var(--primary); background: var(--primary-dim); }
.result-title { font-size: 0.78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 0.4rem; }
.result-value { font-family: var(--font-mono); font-size: 2rem; font-weight: 700; color: #fff; line-height: 1.1; }
.result-sub   { font-size: 0.82rem; color: var(--primary); margin-top: 0.3rem; }

/* VS comparison bar for calculator results */
.calc-vs-bar { margin-top: 1.5rem; }
.calc-vs-row { display: flex; align-items: center; gap: 0.85rem; margin-bottom: 0.75rem; }
.calc-vs-label { width: 36px; font-size: 0.78rem; font-weight: 700; font-family: var(--font-mono); flex-shrink: 0; }
.calc-vs-label.cu  { color: #38bdf8; }
.calc-vs-label.hts { color: var(--primary); }
.calc-vs-track { flex-grow: 1; height: 16px; background: rgba(255,255,255,0.06); border-radius: 3px; overflow: hidden; }
.calc-vs-fill { height: 100%; border-radius: 3px; transition: width 0.8s var(--ease-out); }
.calc-vs-fill.cu  { background: linear-gradient(90deg, #0369a1, #38bdf8); }
.calc-vs-fill.hts { background: linear-gradient(90deg, #00b4cc, var(--primary)); box-shadow: 0 0 8px rgba(0,229,255,0.4); }
.calc-vs-val { width: 72px; font-size: 0.78rem; font-family: var(--font-mono); color: var(--text-muted); text-align: right; flex-shrink: 0; }

/* ──────────────────────────────────────────────────────
   Timeline (Roadmap)
   ────────────────────────────────────────────────────── */
.timeline-wrapper {
    position: relative;
    padding-left: 2.5rem;
    max-width: 900px;
    margin: 0 auto;
}
/* Vertical line */
.timeline-wrapper::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary), var(--accent));
    border-radius: 2px;
}

.timeline-entry {
    position: relative;
    margin-bottom: 3rem;
}
.timeline-entry:last-child { margin-bottom: 0; }

/* Dot on the line */
.timeline-dot {
    position: absolute;
    left: -2.85rem;
    top: 1.75rem;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 12px var(--primary-glow);
    flex-shrink: 0;
}
.timeline-dot.phase2 { background: var(--secondary); box-shadow: 0 0 12px rgba(59,130,246,0.5); }
.timeline-dot.phase3 { background: var(--accent); box-shadow: 0 0 12px rgba(124,58,237,0.5); }

.timeline-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem 2.25rem;
    transition: var(--transition);
}
.timeline-card:hover { border-color: var(--border-mid); box-shadow: var(--shadow-md); }

.timeline-phase {
    display: inline-block;
    padding: 0.3rem 0.85rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: #020408;
    font-weight: 700;
    border-radius: 4px;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    margin-bottom: 0.85rem;
    text-transform: uppercase;
}
.timeline-phase.phase2 { background: linear-gradient(135deg, var(--secondary) 0%, var(--accent) 100%); color: #fff; }
.timeline-phase.phase3 { background: linear-gradient(135deg, var(--accent) 0%, #db2777 100%); color: #fff; }

.timeline-title { font-size: 1.55rem; margin-bottom: 0.75rem; }

.timeline-obj {
    background: rgba(2,4,8,0.65);
    border-left: 3px solid var(--primary);
    padding: 0.85rem 1.1rem;
    border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
    margin-bottom: 1.1rem;
}
.timeline-obj.phase2 { border-left-color: var(--secondary); }
.timeline-obj.phase3 { border-left-color: var(--accent); }
.timeline-obj strong { color: #fff; display: block; font-size: 0.88rem; margin-bottom: 0.25rem; }
.timeline-obj p { font-size: 0.9rem; }

.timeline-milestones { padding-left: 1.25rem; margin: 0.75rem 0 1.25rem; }
.timeline-milestones li { font-size: 0.9rem; margin-bottom: 0.45rem; line-height: 1.5; }

.timeline-img {
    width: 100%; height: 200px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    margin-top: 1.25rem;
}

/* ──────────────────────────────────────────────────────
   Leadership Cards
   ────────────────────────────────────────────────────── */
.leader-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    transition: var(--transition);
}
.leader-card:hover { border-color: var(--border-mid); box-shadow: var(--shadow-md), 0 0 20px var(--primary-dim); }

.leader-photo-wrap { flex-shrink: 0; }
.leader-photo {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    object-position: top;
    border: 2px solid var(--border-mid);
}

.leader-info { flex: 1; }
.leader-name { font-size: 1.35rem; margin-bottom: 0.25rem; }
.leader-role { font-size: 0.9rem; color: var(--primary); font-weight: 600; margin-bottom: 0.2rem; }
.leader-edu  { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.85rem; }
.leader-bio  { font-size: 0.92rem; line-height: 1.65; color: var(--text-secondary); }

.leader-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.85rem; }
.leader-tag {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.7rem;
    border-radius: 50px;
    background: var(--primary-dim);
    border: 1px solid var(--border-color);
    color: var(--primary);
}

/* ──────────────────────────────────────────────────────
   Contact
   ────────────────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 2.5rem; }
.contact-info { display: flex; flex-direction: column; gap: 1.25rem; }
.contact-info-item {
    display: flex;
    gap: 1rem;
    padding: 1.25rem;
    background: rgba(2,4,8,0.70);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}
.contact-info-icon { font-size: 1.3rem; color: var(--primary); flex-shrink: 0; margin-top: 2px; }
.contact-info-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); margin-bottom: 0.2rem; }
.contact-info-value { font-size: 0.95rem; color: var(--text-primary); font-weight: 500; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-field { display: flex; flex-direction: column; gap: 0.4rem; }
.form-field.full { grid-column: 1 / -1; }
.form-label { font-size: 0.82rem; font-weight: 600; color: var(--text-secondary); }
.form-input, .form-select, .form-textarea {
    background: rgba(2,4,8,0.75);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xs);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.92rem;
    padding: 0.75rem 1rem;
    transition: var(--transition);
    outline: none;
    width: 100%;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-dim);
}
.form-textarea { min-height: 120px; resize: vertical; }
.form-select option { background: #0a0e1f; }

.form-status {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    margin-top: 1rem;
}
.form-status.success {
    background: rgba(0,229,255,0.1);
    border: 1px solid var(--primary);
    color: #fff;
}

/* ──────────────────────────────────────────────────────
   Footer
   ────────────────────────────────────────────────────── */
footer {
    background: rgba(1, 2, 5, 0.97);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
    margin-top: 5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand p { margin-top: 1rem; font-size: 0.9rem; color: var(--text-muted); max-width: 340px; line-height: 1.65; }
.footer-column h4 { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 1.25rem; color: var(--text-primary); }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 0.65rem; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; transition: var(--transition); }
.footer-links a:hover { color: var(--primary); }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 1.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}
.footer-bottom p { color: var(--text-muted); font-size: 0.82rem; }
.footer-bottom-badge {
    font-size: 0.78rem;
    color: var(--primary);
    font-family: var(--font-mono);
    opacity: 0.7;
}

/* ──────────────────────────────────────────────────────
   Scroll-Reveal Animations
   ────────────────────────────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
}
.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ──────────────────────────────────────────────────────
   Responsive
   ────────────────────────────────────────────────────── */
@media (max-width: 1100px) {
    .compare-matrix-grid { grid-template-columns: 1fr; }
    .demand-grid         { grid-template-columns: 1fr; }
    .hero-metrics-grid   { grid-template-columns: repeat(2, 1fr); }
    .spec-grid           { grid-template-columns: 1fr; }
}

@media (max-width: 992px) {
    .navbar { padding: 0 1.5rem; }
    .nav-menu { display: none; flex-direction: column; align-items: flex-start; gap: 0; position: absolute; top: 100%; left: 0; right: 0; background: rgba(2,4,8,0.98); backdrop-filter: blur(24px); border-bottom: 1px solid var(--border-color); padding: 0.5rem; }
    .nav-menu.active { display: flex; }
    .nav-menu li { width: 100%; }
    .nav-link, .nav-btn { display: block; width: 100%; padding: 0.85rem 1.25rem; border-radius: var(--radius-xs); }
    .nav-btn { margin-top: 0.5rem; text-align: center; }
    .mobile-toggle { display: flex; align-items: center; }

    .tech-split-grid        { grid-template-columns: 1fr; }
    .layer-explorer-container { grid-template-columns: 1fr; }
    .calc-wrapper           { grid-template-columns: 1fr; }
    .footer-grid            { grid-template-columns: 1fr 1fr; }
    .contact-grid           { grid-template-columns: 1fr; }
    .leader-card            { flex-direction: column; align-items: center; text-align: center; }
    .leader-tags            { justify-content: center; }
}

@media (max-width: 640px) {
    .hero-title { font-size: 2.2rem; }
    .hero-metrics-grid { grid-template-columns: repeat(2, 1fr); }
    .pages-grid { grid-template-columns: 1fr; }
    .apps-grid  { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .form-grid  { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .hero-ctas { flex-direction: column; align-items: center; }
}

/* Responsive Utilities */
.compare-2x2-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto 3rem;
}

.responsive-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

@media (max-width: 768px) {
    .compare-2x2-grid {
        grid-template-columns: 1fr;
    }
    .responsive-two-col {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
}