/* ═══════════════════════════════════════════════════════════
   Thongpin Premium — Balanced light/dark rhythm per section
   ไล่เฉด: Hero dark → ขาว/cream → slate → ขาว → dark accent
   ═══════════════════════════════════════════════════════════ */

:root {
    --cream: #F5EDE3;
    --warm-white: #FFFCF8;
    --cool-light: #FAF6F0;
    --stone: #EDE4D8;

    --slate: #5C4033;
    --charcoal: #4A3728;
    --ink: #3D2B1F;

    --on-light: #4A3728;
    --on-light-muted: #6B5344;
    --on-light-dim: #8B7355;
    --on-dark: #FFFCF8;
    --on-dark-muted: rgba(255, 252, 248, 0.78);

    --card-light: #FFFCF8;
    --card-light-border: rgba(201, 162, 39, 0.28);
    --card-light-shadow: 0 8px 28px rgba(92, 64, 51, 0.09);
    --card-dark: rgba(255,255,255,.05);
    --card-dark-border: rgba(255,255,255,.1);

    --section-pad: clamp(36px, 4.5vw, 52px);
}

body {
    background: var(--bg-page, #FAF6F0);
    color: var(--on-light);
    line-height: 1.55;
}

/* scroll offset — enterprise.css */

/* Subtle grain — ลดลง ไม่น่ากลัว */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: .018;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.container {
    max-width: 1200px;
    padding: 0 clamp(20px, 4vw, 40px);
}

/* ── Header: บน hero = โปร่งใส · scroll = ขาวครีม ── */
.header {
    background: rgba(61, 43, 31, 0.42);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(201, 162, 39, 0.15);
}
.header .nav-link { color: rgba(255,255,255,.82); }
.header .nav-link:hover,
.header .nav-link.active { color: var(--gold-light); }
.header .logo-text { color: #fff; }
.header .menu-toggle span { background: #fff; }
.header .lang-switch {
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.15);
}

.header.scrolled {
    background: rgba(255, 252, 248, 0.96);
    border-bottom: 1px solid rgba(201, 162, 39, 0.22);
    box-shadow: 0 4px 24px rgba(92, 64, 51, 0.08);
}
.header.scrolled .nav-link { color: var(--on-light-muted); }
.header.scrolled .nav-link:hover,
.header.scrolled .nav-link.active { color: var(--gold-dark); }
.header.scrolled .logo-text { color: var(--on-light); }
.header.scrolled .menu-toggle span { background: var(--on-light); }
.header.scrolled .lang-switch {
    background: var(--cream);
    border-color: rgba(212,175,55,.2);
}

/* ── Hero — cinematic dark (จุดเดียวที่มืดเต็ม) ── */
.hero-bg {
    background: linear-gradient(145deg, #4A3728 0%, #5C4033 50%, #3D2B1F 100%) !important;
}
.hero-slide:nth-child(2) .hero-bg,
.hero-slide:nth-child(3) .hero-bg {
    background: linear-gradient(145deg, #5C4033 0%, #4A3728 60%, #3D2B1F 100%) !important;
}
.hero-bg::before {
    background: radial-gradient(ellipse 55% 45% at 75% 25%, rgba(201, 162, 39, 0.18), transparent);
}
.hero-overlay {
    background: linear-gradient(108deg,
        rgba(61, 43, 31, 0.88) 0%,
        rgba(74, 55, 40, 0.62) 50%,
        rgba(92, 64, 51, 0.35) 100%) !important;
}
.hero-slide:not(.has-image) h1 { color: var(--on-dark); }
.hero-slide:not(.has-image) p { color: var(--on-dark-muted); }
.hero h1 {
    font-family: var(--font);
    font-weight: 800;
    letter-spacing: -.035em;
    line-height: 1.08;
    font-size: clamp(1.85rem, 3.8vw, 2.85rem);
}
/* hero + stats spacing — enterprise.css */
.stats-grid {
    background: linear-gradient(135deg, #5C4033, #4A3728);
    border-color: rgba(201, 162, 39, 0.35);
    box-shadow: 0 16px 48px rgba(61, 43, 31, 0.2);
}

/* ── Trust — ขาวครีม (เริ่มโซนสว่าง) ── */
.trust-strip {
    background: linear-gradient(180deg, #D4CBBF 0%, #DDD5C8 100%);
    padding: 14px 0 16px;
    position: relative;
    z-index: 2;
}
.trust-inner {
    background: rgba(247,243,236,.85);
    border: 1px solid rgba(212,175,55,.22);
    box-shadow: var(--card-light-shadow);
    padding: 14px 20px;
}
.trust-label {
    font-size: .64rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .2em;
    color: var(--gold-dark);
    margin-bottom: 10px;
}
.trust-tags span {
    padding: 5px 12px;
    font-size: .72rem;
    font-weight: 600;
    color: var(--on-light-muted);
    background: var(--cream);
    border: 1px solid rgba(212,175,55,.15);
    border-radius: 6px;
    transition: var(--transition);
}
.trust-tags span:hover {
    border-color: var(--gold);
    color: var(--gold-dark);
    background: rgba(212,175,55,.08);
}

/* ── Sections global ── */
.section { padding: var(--section-pad) 0; position: relative; }
.section-header { margin-bottom: clamp(14px, 2vw, 20px); }
.section-header h2 {
    font-family: var(--font);
    font-weight: 800;
    letter-spacing: -.03em;
    font-size: clamp(1.35rem, 2.6vw, 1.85rem);
    line-height: 1.2;
    margin-top: 0;
}
.section-header p { font-size: .88rem; line-height: 1.5; margin-top: 6px; }
.section-tag { letter-spacing: .16em; font-size: .68rem; font-weight: 700; }

/* Compact header — หัวข้อเดียว ไม่ซ้ำ tag */
.section-header--compact { margin-bottom: clamp(12px, 1.8vw, 18px); }
.section-header--compact h2 { margin-top: 0; }
.section-header--compact p {
    max-width: 640px;
    color: var(--on-light-muted);
}
.section-header--compact.center p { margin-inline: auto; }
.portfolio .section-header--compact p,
.tech .section-header--compact p { color: var(--on-dark-muted); }

/* Light section typography */
.section--light .section-header h2,
.about .section-header h2,
.process .section-header h2,
.why .section-header h2,
.contact .section-header h2,
.services .section-header h2 {
    color: var(--on-light);
}
.section--light .section-header p,
.about .section-header p,
.process .section-header p,
.why .section-header p,
.contact .section-header p,
.services .section-header p {
    color: var(--on-light-muted);
}
.section--light .section-tag,
.about .section-tag,
.process .section-tag,
.why .section-tag,
.contact .section-tag,
.services .section-tag {
    color: var(--gold-dark);
}
.section--light .section-tag::before,
.about .section-tag::before,
.process .section-tag::before,
.why .section-tag::before,
.contact .section-tag::before,
.services .section-tag::before {
    background: linear-gradient(90deg, transparent, var(--gold));
}
.section--light .section-tag::after,
.about .section-tag::after,
.process .section-tag::after,
.why .section-tag::after,
.contact .section-tag::after,
.services .section-tag::after {
    background: linear-gradient(90deg, var(--gold), transparent);
}

/* Dark section typography */
.portfolio .section-header h2,
.tech .section-header h2 { color: var(--on-dark); }
.portfolio .section-header p,
.tech .section-header p { color: var(--on-dark-muted); }
.portfolio .section-tag,
.tech .section-tag { color: var(--gold-light); }

/* ── About — compact layout ── */
.about--compact {
    padding: clamp(56px, 7vw, 80px) 0;
}
.about-intro { margin-bottom: 28px; }
.about-intro .section-tag { margin-bottom: 12px; }
.about-intro-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: clamp(28px, 4vw, 48px);
    align-items: center;
}
.about-copy h2 {
    font-family: var(--font);
    font-weight: 800;
    font-size: clamp(1.5rem, 2.8vw, 2rem);
    letter-spacing: -.03em;
    color: var(--on-light);
    line-height: 1.2;
    margin-bottom: 12px;
}
.about--compact .lead {
    color: var(--on-light-muted);
    font-size: .98rem;
    line-height: 1.65;
    margin: 0;
}
.about-pillars {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}
.about--compact .about-card {
    padding: 22px 24px;
}
.about--compact .about-card-icon {
    width: 38px; height: 38px;
    margin-bottom: 12px;
}
.about--compact .about-card-icon svg { width: 18px; height: 18px; }
.about--compact .about-card h3 {
    font-size: .95rem;
    margin-bottom: 6px;
}
.about--compact .about-card p {
    font-size: .86rem;
    line-height: 1.6;
}
.about--compact .about-photo,
.about--compact .about-image-placeholder.has-photo {
    min-height: 220px;
    max-height: 260px;
}
.about--compact .mock-body { height: 160px; }
.about--compact .about-badge-float {
    padding: 8px 16px;
    font-size: .78rem;
    top: -12px; right: -12px;
}
.about--compact .about-badge-float.second {
    bottom: -12px; left: -12px;
}
.values-grid--compact {
    gap: 14px;
}
.values-grid--compact .value-item {
    padding: 22px 18px;
}
.values-grid--compact .value-icon {
    width: 40px; height: 40px;
    margin-bottom: 12px;
}
.values-grid--compact .value-icon svg { width: 18px; height: 18px; }
.values-grid--compact .value-item h4 {
    font-size: .88rem;
    margin-bottom: 6px;
}
.values-grid--compact .value-item p {
    font-size: .8rem;
    line-height: 1.55;
}

@media (max-width: 900px) {
    .about-intro-grid { grid-template-columns: 1fr; }
    .about--compact .about-visual { order: -1; max-width: 420px; }
    .about-pillars { grid-template-columns: 1fr; }
    .values-grid--compact { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 540px) {
    .values-grid--compact { grid-template-columns: 1fr; }
}

/* ── About — warm white (legacy overrides) ── */
.about {
    background: var(--warm-white);
}
.about::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(212,175,55,.35), transparent);
}
.about-grid { gap: clamp(48px, 8vw, 88px); margin-bottom: clamp(48px, 7vw, 80px); }
.about-text .lead {
    color: var(--on-light-muted);
    font-size: 1.08rem;
    line-height: 2;
}
.about-card {
    background: var(--card-light);
    border: 1px solid var(--card-light-border);
    box-shadow: var(--card-light-shadow);
    padding: 32px;
}
.about-card:hover {
    transform: translateX(6px);
    box-shadow: 0 16px 40px rgba(26,29,38,.1);
    border-color: rgba(212,175,55,.28);
}
.about-card h3 { color: var(--on-light); font-weight: 700; }
.about-card p { color: var(--on-light-muted); }
.about-card-icon {
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(212,175,55,.1);
    border: 1px solid rgba(212,175,55,.22);
    border-radius: 10px;
    color: var(--gold-dark);
    margin-bottom: 16px;
}
.about-card-icon svg { width: 22px; height: 22px; }
.about-image-placeholder {
    background: var(--card-light);
    border: 1px solid var(--card-light-border);
    box-shadow: var(--card-light-shadow);
    transform: none;
}
.about-badge-float.second {
    background: var(--charcoal);
    border: 1px solid rgba(212,175,55,.3);
    color: var(--gold-light);
}

.value-item {
    background: var(--card-light);
    border: 1px solid var(--card-light-border);
    box-shadow: var(--card-light-shadow);
    padding: 36px 28px;
    text-align: left;
}
.value-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 48px rgba(26,29,38,.1);
    border-color: rgba(212,175,55,.3);
}
.value-icon {
    font-size: unset;
    width: 48px; height: 48px;
    margin: 0 0 18px;
    background: rgba(212,175,55,.1);
    border: 1px solid rgba(212,175,55,.2);
    border-radius: 12px;
    color: var(--gold-dark);
}
.value-icon svg { width: 22px; height: 22px; }
.value-item h4 { color: var(--on-light); font-weight: 700; }
.value-item p { color: var(--on-light-muted); line-height: 1.75; }

/* ── Services — cool stone gray ── */
.services {
    background: linear-gradient(180deg, #FFFCF8 0%, #FAF6F0 100%);
}
.services-bg { display: none; }
.service-tabs {
    background: rgba(247,243,236,.9);
    border: 1px solid rgba(212,175,55,.15);
    box-shadow: var(--card-light-shadow);
    margin-bottom: clamp(14px, 2vw, 18px);
    padding: 4px;
}
.tab-btn { padding: 10px 14px; font-size: .82rem; }
.tab-btn { color: var(--on-light-muted); }
.tab-btn .pct { background: var(--cool-light); color: var(--on-light-dim); }
.tab-btn.active {
    background: linear-gradient(135deg, var(--gold-dark), var(--gold));
    color: #fff;
    box-shadow: 0 6px 20px rgba(212,175,55,.28);
}
.tab-btn.active .pct { background: rgba(255,255,255,.25); color: #fff; }
.tab-btn:not(.active):hover { background: rgba(212,175,55,.08); color: var(--gold-dark); }

.service-card {
    background: rgba(255,252,247,.92);
    border: 1px solid rgba(212,175,55,.12);
    box-shadow: 0 2px 12px rgba(26,29,38,.04);
}
.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 48px rgba(26,29,38,.1);
    border-color: rgba(212,175,55,.25);
}
.service-watermark { color: rgba(26,29,38,.05); }
.service-card h3 { color: var(--on-light); font-weight: 700; }
.service-card p { color: var(--on-light-muted); }
.service-card--featured {
    background: linear-gradient(160deg, #FFFCF5, var(--card-light));
    border-color: rgba(212,175,55,.25);
}
.service-link { color: var(--gold-dark); }

/* ── Process — cream white ── */
.process {
    background: linear-gradient(180deg, #FAF6F0 0%, #F5EDE3 100%);
}
.process::before {
    background: linear-gradient(90deg, transparent, rgba(212,175,55,.25), transparent);
    opacity: 1;
}
.process-step {
    background: rgba(247,243,236,.88);
    border: 1px solid rgba(212,175,55,.15);
    box-shadow: var(--card-light-shadow);
    padding: 20px 16px;
    text-align: left;
}
.process-grid { gap: 12px; }
.process-num { font-size: 2rem; margin-bottom: 8px; }
.process-step h4 { margin-bottom: 6px; font-size: .92rem; }
.process-step p { font-size: .8rem; line-height: 1.5; }
.process-step:hover {
    border-color: rgba(212,175,55,.3);
    box-shadow: 0 16px 40px rgba(26,29,38,.09);
    transform: translateY(-4px);
}
.process-step h4 { color: var(--on-light); font-weight: 700; }
.process-step p { color: var(--on-light-muted); }

/* ── Portfolio — soft slate (ไม่ดำสนิท) ── */
.portfolio {
    background: linear-gradient(165deg, var(--slate) 0%, var(--charcoal) 100%);
}
.portfolio-card {
    background: var(--card-dark);
    border: 1px solid var(--card-dark-border);
    backdrop-filter: blur(8px);
}
.portfolio-card:hover {
    border-color: rgba(212,175,55,.35);
    box-shadow: 0 24px 56px rgba(0,0,0,.28);
}
.portfolio-mock { background: rgba(0,0,0,.2); }
.portfolio-info h3 { color: var(--on-dark); font-weight: 700; }
.portfolio-info p { color: var(--on-dark-muted); }

/* ── Why — warm white again ── */
.why {
    background: linear-gradient(180deg, #FFFCF8 0%, #FAF6F0 100%);
}
.why-card {
    background: rgba(247,243,236,.9);
    border: 1px solid rgba(212,175,55,.15);
    box-shadow: var(--card-light-shadow);
    text-align: left;
    padding: 20px 18px;
}
.why-card:hover {
    border-color: rgba(212,175,55,.28);
    box-shadow: 0 20px 48px rgba(26,29,38,.1);
    transform: translateY(-4px);
}
.why-grid { gap: 12px; }
.why-icon {
    font-size: unset;
    width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(212,175,55,.1);
    border: 1px solid rgba(212,175,55,.22);
    border-radius: 10px;
    color: var(--gold-dark);
    margin-bottom: 10px;
}
.why-icon svg { width: 18px; height: 18px; }
.why-card h4 { color: var(--on-light); font-weight: 700; font-size: .9rem; margin-bottom: 4px; }
.why-card p { color: var(--on-light-muted); line-height: 1.5; font-size: .78rem; }

/* ── Tech — charcoal accent ── */
.tech {
    background: linear-gradient(180deg, var(--charcoal) 0%, var(--ink) 100%);
}
.tech::before {
    background: radial-gradient(ellipse 70% 55% at 50% 100%, rgba(212,175,55,.12), transparent);
}

/* ── CTA — นุ่มลง ── */
.cta--photo::before {
    background: linear-gradient(135deg, rgba(30,34,41,.88), rgba(37,42,51,.72)) !important;
}

/* ── Contact — cream light ── */
.contact {
    background: linear-gradient(180deg, #FAF6F0 0%, #F5EDE3 100%);
}
.contact-item {
    background: rgba(247,243,236,.9);
    border: 1px solid rgba(212,175,55,.15);
    box-shadow: var(--card-light-shadow);
}
.contact-item:hover {
    border-color: rgba(212,175,55,.28);
    box-shadow: 0 12px 32px rgba(26,29,38,.08);
}
.contact-item span {
    font-size: unset;
    background: rgba(212,175,55,.1);
    border: 1px solid rgba(212,175,55,.2);
    color: var(--gold-dark);
}
.contact-item span svg { width: 20px; height: 20px; }
.contact-item strong { color: var(--on-light); }
.contact-item p { color: var(--on-light-muted); }
.map-placeholder {
    background: var(--card-light);
    border-color: rgba(212,175,55,.2);
    color: var(--on-light-dim);
}
.contact-form {
    background: rgba(247,243,236,.95);
    border: 1px solid rgba(212,175,55,.18);
    box-shadow: 0 16px 48px rgba(26,29,38,.1);
}
.form-group label {
    color: var(--on-light-muted);
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .08em;
}
.form-group input,
.form-group textarea {
    background: var(--cream);
    border-color: rgba(26,29,38,.1);
    color: var(--on-light);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--on-light-dim); }
.form-group input:focus,
.form-group textarea:focus {
    background: #fff;
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(212,175,55,.12);
}

/* ── Buttons ── */
.btn-outline {
    border-color: rgba(212,175,55,.45);
    color: var(--gold-dark);
    background: rgba(255,255,255,.7);
}
.btn-primary { font-weight: 700; letter-spacing: .02em; }

/* ── Footer — soft dark ── */
.footer { background: var(--footer-bg); color: var(--footer-text, var(--text-muted)); }

/* ── Mobile ── */
@media (max-width: 768px) {
    .nav {
        background: rgba(255,252,247,.97);
        border-color: rgba(212,175,55,.15);
    }
    .nav-link { color: var(--on-light-muted); }
    .header:not(.scrolled) .nav.open .nav-link { color: var(--on-light-muted); }
}

@media (max-width: 1024px) {
    .values-grid, .why-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .values-grid, .why-grid { grid-template-columns: 1fr; }
    .trust-inner { padding: 12px 16px; }
}

/* density — enterprise.css overrides compact rules below where needed */

/* Portfolio pager */
.portfolio-slider {
    position: relative;
    min-height: 320px;
}
.portfolio-page {
    display: none;
    animation: portfolioFadeOut .35s ease forwards;
}
.portfolio-page.active {
    display: block;
    animation: portfolioFadeIn .45s ease forwards;
}
@keyframes portfolioFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: none; }
}
@keyframes portfolioFadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}
.portfolio-pager {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 18px;
}
.portfolio-page-btn {
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border-radius: 10px;
    border: 1px solid rgba(212, 175, 55, 0.28);
    background: rgba(255, 255, 255, 0.08);
    color: var(--gold-light);
    font-family: var(--font);
    font-size: .85rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}
.portfolio-page-btn:hover {
    border-color: rgba(212, 175, 55, 0.5);
    background: rgba(212, 175, 55, 0.12);
}
.portfolio-page-btn.active {
    background: linear-gradient(135deg, var(--gold-dark), var(--gold));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 16px rgba(212, 175, 55, 0.35);
}
[data-theme="day"] .portfolio-page-btn {
    background: rgba(252, 251, 248, 0.9);
    color: var(--text-muted);
    border-color: var(--card-light-border);
}
[data-theme="day"] .portfolio-page-btn.active {
    color: #fff;
}