/* ═══════════════════════════════════════════════════════════════════════════
   SentianOrbit — Extended Landing Page Sections
   ═══════════════════════════════════════════════════════════════════════════ */

:root {
    --cyan: #00f2fe;
    --green: #2ecc71;
    --orange: #e67e22;
    --red: #e74c3c;
    --purple: #9b59b6;
    --bg-dark: #05080a;
    --bg-card: rgba(255,255,255,0.03);
    --border: rgba(255,255,255,0.07);
    --text-dim: rgba(255,255,255,0.5);
}

/* ── Technology page stats row ─────────────────────────────────────────────── */

.tx-stats-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    padding: 40px 80px;
    background: rgba(0,242,254,0.02);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    flex-wrap: wrap;
}

.tx-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 40px;
    gap: 4px;
}

.tx-stat-num {
    font-family: 'Outfit', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

.tx-stat-lbl {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.4);
}

.tx-sep {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.07);
}

/* ── Shared utilities ──────────────────────────────────────────────────────── */

.lbl-tag {
    display: inline-block;
    font-family: 'Inter', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--cyan);
    margin-bottom: 18px;
}

.section-eyebrow {
    text-align: center;
    margin-bottom: 64px;
}

.section-eyebrow .lbl-tag { display: block; }

.section-eyebrow h2 {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 800;
    line-height: 1.1;
    margin: 0 0 16px;
    color: #fff;
}

.section-eyebrow p {
    font-size: 1.05rem;
    color: var(--text-dim);
    max-width: 560px;
    margin: 0 auto;
}

/* ── PROBLEM SECTION ───────────────────────────────────────────────────────── */

.problems-section {
    padding: 100px 80px;
    max-width: 1400px;
    margin: 0 auto;
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.problem-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--red);
    border-radius: 16px;
    padding: 32px 28px;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-6px);
    border-left-color: var(--orange);
}

.problem-icon {
    font-size: 1.8rem;
    margin-bottom: 16px;
    display: block;
}

.problem-card h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 10px;
}

.problem-card p {
    font-size: 0.88rem;
    color: var(--text-dim);
    line-height: 1.6;
    margin: 0;
}

.problem-stat {
    display: inline-block;
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--red);
    margin-top: 14px;
}

/* ── CASE STUDIES ──────────────────────────────────────────────────────────── */

.cases-section {
    padding: 100px 80px;
    max-width: 1400px;
    margin: 0 auto;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
}

.case-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: default;
    background: #0a0f14;
    border: 1px solid var(--border);
}

.case-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
    filter: brightness(0.7) saturate(0.6);
}

.case-card:hover img {
    transform: scale(1.05);
    filter: brightness(0.8) saturate(0.8);
}

.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
}

.case-tag {
    font-family: 'Inter', sans-serif;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--cyan);
    margin-bottom: 6px;
}

.case-overlay h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 6px;
}

.case-overlay p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.6);
    margin: 0;
    line-height: 1.5;
}

/* ── AI ADVANTAGE ──────────────────────────────────────────────────────────── */

.ai-section {
    padding: 100px 80px;
    max-width: 1400px;
    margin: 0 auto;
}

.ai-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.ai-visual {
    background: linear-gradient(135deg, #05080a 0%, #0a1a24 100%);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.ai-visual::before {
    content: '';
    position: absolute;
    top: -40%;
    left: -40%;
    width: 180%;
    height: 180%;
    background: radial-gradient(circle, rgba(0,242,254,0.06) 0%, transparent 70%);
    pointer-events: none;
}

.ai-browser-icon {
    font-size: 5rem;
    margin-bottom: 24px;
    display: block;
}

.ai-flow {
    display: flex;
    flex-direction: column;
    gap: 12px;
    text-align: left;
}

.ai-flow-step {
    background: rgba(0,242,254,0.05);
    border: 1px solid rgba(0,242,254,0.12);
    border-radius: 10px;
    padding: 12px 16px;
    font-family: 'Inter', monospace;
    font-size: 0.8rem;
    color: var(--cyan);
    display: flex;
    align-items: center;
    gap: 12px;
}

.ai-flow-step .step-arrow { color: var(--green); font-weight: 700; }
.ai-flow-step .step-locked { color: var(--green); }

.ai-content h2 {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(1.8rem, 3vw, 2.8rem);
    font-weight: 800;
    line-height: 1.1;
    margin: 0 0 24px;
    color: #fff;
}

.ai-benefits {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 32px;
}

.ai-benefit {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.ai-benefit-icon {
    width: 40px;
    height: 40px;
    background: rgba(0,242,254,0.08);
    border: 1px solid rgba(0,242,254,0.15);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.ai-benefit-text h4 {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 4px;
}

.ai-benefit-text p {
    font-size: 0.83rem;
    color: var(--text-dim);
    margin: 0;
    line-height: 1.55;
}

/* ── SOLUTION / AIS ────────────────────────────────────────────────────────── */

.solution-section {
    padding: 100px 80px;
    max-width: 1400px;
    margin: 0 auto;
}

.solution-flow {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    position: relative;
    margin-top: 64px;
}

.solution-flow::before {
    content: '';
    position: absolute;
    top: 44px;
    left: 12.5%;
    width: 75%;
    height: 2px;
    background: linear-gradient(90deg, var(--cyan), var(--green));
    z-index: 0;
}

.sol-step {
    text-align: center;
    padding: 0 16px;
    position: relative;
    z-index: 1;
}

.sol-circle {
    width: 88px;
    height: 88px;
    background: #05080a;
    border: 2px solid var(--cyan);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 20px;
    transition: background 0.3s ease, transform 0.3s ease;
}

.sol-step:hover .sol-circle {
    background: rgba(0,242,254,0.1);
    transform: scale(1.08);
}

.sol-step h4 {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 8px;
}

.sol-step p {
    font-size: 0.8rem;
    color: var(--text-dim);
    line-height: 1.5;
    margin: 0;
}

/* ── TECH STACK ────────────────────────────────────────────────────────────── */

.tech-stack-section {
    padding: 80px 80px;
    max-width: 1400px;
    margin: 0 auto;
}

.sensor-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-top: 48px;
}

.sensor-badge {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 28px 20px;
    text-align: center;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.sensor-badge:hover {
    border-color: var(--cyan);
    transform: translateY(-4px);
}

.sensor-badge.future {
    border-style: dashed;
    opacity: 0.6;
}

.sensor-badge.future:hover { opacity: 1; }

.sensor-icon { font-size: 2rem; margin-bottom: 10px; display: block; }

.sensor-badge h4 {
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 4px;
}

.sensor-badge p {
    font-size: 0.72rem;
    color: var(--text-dim);
    margin: 0;
}

.sensor-badge .future-tag {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--purple);
    text-transform: uppercase;
    margin-top: 6px;
}

/* ── TARGET MARKET ─────────────────────────────────────────────────────────── */

.market-section {
    padding: 100px 80px;
    max-width: 1400px;
    margin: 0 auto;
}

.market-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.market-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px 24px;
    transition: border-color 0.3s, transform 0.3s;
}

.market-card:hover {
    border-color: var(--green);
    transform: translateY(-5px);
}

.market-icon { font-size: 1.7rem; margin-bottom: 12px; display: block; }

.market-card h4 {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 6px;
}

.market-card p {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin: 0;
    line-height: 1.5;
}

/* ── BUSINESS MODEL ────────────────────────────────────────────────────────── */

.bizmodel-section {
    padding: 100px 80px;
    max-width: 1400px;
    margin: 0 auto;
}

.biz-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.biz-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 36px 28px;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s, border-color 0.3s;
}

.biz-card:hover { transform: translateY(-6px); border-color: var(--cyan); }

.biz-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 3px;
    background: var(--card-accent, var(--cyan));
}

.biz-card.b2g { --card-accent: var(--cyan); }
.biz-card.b2b { --card-accent: var(--green); }
.biz-card.b2c { --card-accent: var(--purple); }

.biz-label {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--card-accent, var(--cyan));
    margin-bottom: 6px;
}

.biz-full {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 16px;
}

.biz-card h4 {
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 8px;
}

.biz-card p {
    font-size: 0.82rem;
    color: var(--text-dim);
    margin: 0;
    line-height: 1.55;
}

.biz-future {
    background: linear-gradient(90deg, rgba(155,89,182,0.08), rgba(0,242,254,0.05));
    border: 1px dashed rgba(155,89,182,0.3);
    border-radius: 16px;
    padding: 28px 32px;
    display: flex;
    align-items: center;
    gap: 24px;
}

.biz-future-icon { font-size: 2rem; }

.biz-future-text h4 {
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 4px;
}

.biz-future-text p {
    font-size: 0.82rem;
    color: var(--text-dim);
    margin: 0;
}

/* ── Responsive ────────────────────────────────────────────────────────────── */

@media (max-width: 900px) {
    .problems-section,
    .cases-section,
    .ai-section,
    .solution-section,
    .tech-stack-section,
    .market-section,
    .bizmodel-section {
        padding: 70px 24px;
    }

    .ai-split { grid-template-columns: 1fr; gap: 40px; }

    .solution-flow {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .solution-flow::before { display: none; }

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

@media (max-width: 600px) {
    .solution-flow { grid-template-columns: 1fr; }
    .sensor-grid { grid-template-columns: repeat(2, 1fr); }
}