/* ═══════════════════════════════════════
   SUBPAGE STYLES — design12
   Shared across sales, webapp, info, ai, portfolio
   Uses the 7 design principles
   ═══════════════════════════════════════ */

/* ── Subpage Hero: Mockup background + dark overlay ── */
.sub-hero {
    background: var(--navy);
    color: var(--white);
    padding: 200px 0 120px;
    text-align: left;
    position: relative;
    overflow: hidden;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* Dark gradient overlay on top of mockup image */
.sub-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10,15,30,.92) 30%, rgba(10,15,30,.75) 70%, rgba(10,15,30,.88) 100%);
    z-index: 1;
}

.sub-hero .wrap {
    position: relative;
    z-index: 2;
}

.sub-hero::after {
    content: '';
    position: absolute;
    right: -200px;
    top: -100px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59,123,246,.08), transparent 70%);
    pointer-events: none;
    z-index: 2;
}

.sub-hero h1 {
    font-family: var(--font-h);
    font-size: clamp(2.5rem, 5.5vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -.02em;
    margin-bottom: 24px;
    max-width: 700px;
}

.sub-hero h1 .dot { color: var(--blue); }

.sub-hero-sub {
    font-size: 1.1rem;
    color: rgba(255,255,255,.45);
    max-width: 520px;
    line-height: 1.8;
}


/* ── Pricing Tiers: Horizontal layout, NOT card grid ──
   Philosophy #5 Progressive Disclosure:
   Show tier name + price → expand for details
   Philosophy #2 Content Discipline:
   One tier per viewport row
   ── */
.tiers {
    background: var(--off-white);
    padding: 120px 0;
}

.tiers-header {
    margin-bottom: 64px;
}

.tiers-header .sec-label {
    color: var(--gray-500);
    margin-bottom: 24px;
    display: flex;
}

.tiers-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.tier {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    transition: box-shadow .3s ease;
    position: relative;
}

.tier:hover {
    box-shadow: 0 12px 48px rgba(0,0,0,.06);
}

.tier.featured {
    border: 2px solid var(--blue);
}

.tier.featured::before {
    content: 'ยอดนิยม';
    position: absolute;
    top: 0;
    right: 32px;
    background: var(--blue);
    color: var(--white);
    font-size: .7rem;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 0 0 12px 12px;
    z-index: 2;
}

.tier-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 32px 40px;
    transition: background .2s;
}

.tier-head:hover {
    background: var(--off-white);
}

.tier-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.tier-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: var(--off-white);
    color: var(--blue);
    font-family: var(--font-h);
    font-weight: 700;
    font-size: .85rem;
    flex-shrink: 0;
}

.tier.featured .tier-badge {
    background: var(--blue-glow);
}

.tier-title h3 {
    font-family: var(--font-h);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.tier-title span {
    font-size: .85rem;
    color: var(--gray-500);
}

.tier-right {
    display: flex;
    align-items: center;
    gap: 32px;
}

.tier-price {
    font-family: var(--font-h);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--blue);
}

/* Expand icon hidden — tiers always open */
.tier-expand {
    display: none;
}

/* Tier body always visible */
.tier-body {
    overflow: visible;
}

.tier-body-inner {
    display: flex;
    flex-direction: column;
    gap: 32px;
    padding: 0 40px 40px;
}

.tier-img {
    border-radius: 16px;
    overflow: hidden;
    max-width: 100%;
    box-shadow: 0 8px 32px rgba(0,0,0,.08);
}

.tier-img img {
    width: 100%;
    display: block;
}

.tier-detail p {
    font-size: .95rem;
    color: var(--gray-500);
    line-height: 1.8;
    margin-bottom: 20px;
}

.tier-features {
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
}

.tier-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: .9rem;
    color: var(--gray-700);
    padding: 8px 0;
    border-bottom: 1px solid var(--gray-100);
}

.tier-features li:last-child { border: none; }

.tier-features .check {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--blue-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--blue);
}

.tier-btns {
    display: flex;
    gap: 12px;
}

.tier-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font);
    font-size: .9rem;
    font-weight: 600;
    color: var(--white);
    background: var(--blue);
    padding: 14px 32px;
    border-radius: 100px;
    transition: transform .2s;
}

.tier-cta:hover { transform: translateY(-2px); }

.tier-demo {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font);
    font-size: .9rem;
    font-weight: 500;
    color: var(--gray-500);
    padding: 14px 24px;
    border-radius: 100px;
    border: 1.5px solid var(--gray-100);
    transition: border-color .2s, color .2s;
}

.tier-demo:hover {
    border-color: var(--gray-500);
    color: var(--text);
}


/* ── Full-page Tier Sections ── */
.tier-section {
    padding: 120px 0;
}

.tier-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.tier-visual {
    overflow: hidden;
}


.tier-visual img {
    width: 100%;
    display: block;
}

.tier-info .section-title {
    margin-bottom: 8px;
}

.tier-who {
    font-size: .95rem;
    color: var(--blue);
    font-weight: 500;
    margin-bottom: 24px;
    line-height: 1.6;
}

.tier-price-big {
    font-family: var(--font-h);
    font-size: 3rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1;
    margin-bottom: 32px;
}

/* Dark tier section overrides */
.tier-section-dark .tier-features li {
    color: rgba(255,255,255,.9);
    border-color: rgba(255,255,255,.15);
}
.tier-section-dark .tier-features .check {
    background: rgba(59,123,246,.25);
    color: #8bb8ff;
}
.tier-section-dark .tier-btns .btn-outline-dark {
    border-color: rgba(255,255,255,.3);
    color: var(--white);
}
.tier-section-dark .tier-btns .btn-outline-dark:hover {
    background: rgba(255,255,255,.1);
    border-color: rgba(255,255,255,.5);
}


/* ── Info Sections: Dark/Light alternating ── */
.info-section {
    padding: 120px 0;
    background: var(--white);
}

.info-section.dark {
    background: var(--navy);
    color: var(--white);
}

.info-header {
    margin-bottom: 64px;
}

.info-header .sec-label {
    color: var(--gray-500);
    margin-bottom: 24px;
    display: flex;
}

.info-section.dark .info-header .sec-label {
    color: rgba(255,255,255,.4);
}

.info-section.dark .section-title {
    color: var(--white);
}

.info-header p {
    font-size: 1rem;
    color: var(--gray-500);
    max-width: 560px;
    line-height: 1.7;
    margin-top: 16px;
}

.info-section.dark .info-header p {
    color: rgba(255,255,255,.45);
}

/* Info row list: step-by-step or platform cards */
.info-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    counter-reset: step;
}

.info-step {
    position: relative;
    padding: 32px;
    border-radius: 16px;
    background: var(--off-white);
    transition: transform .3s, box-shadow .3s;
}

.info-step:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,.05);
}

.info-section.dark .info-step {
    background: var(--navy-mid);
}

.info-step::before {
    counter-increment: step;
    content: counter(step);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--blue-glow);
    color: var(--blue);
    font-family: var(--font-h);
    font-weight: 700;
    font-size: .85rem;
    margin-bottom: 16px;
}

.info-section.dark .info-step::before {
    background: rgba(59,123,246,.15);
}

.info-step strong {
    display: block;
    font-family: var(--font-h);
    font-size: 1rem;
    margin-bottom: 8px;
}

.info-step p {
    font-size: .88rem;
    color: var(--gray-500);
    line-height: 1.6;
}

.info-section.dark .info-step p {
    color: rgba(255,255,255,.5);
}

/* Platform grid (4 cols) */
.info-platforms {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.info-platform {
    padding: 28px;
    border-radius: 16px;
    background: var(--off-white);
    text-align: center;
    transition: transform .3s;
}

.info-platform:hover { transform: translateY(-4px); }

.info-section.dark .info-platform {
    background: var(--navy-mid);
}

.info-platform strong {
    display: block;
    font-family: var(--font-h);
    font-size: .95rem;
    margin: 12px 0 6px;
}

.info-platform p {
    font-size: .8rem;
    color: var(--gray-500);
    line-height: 1.5;
}

.info-section.dark .info-platform p {
    color: rgba(255,255,255,.45);
}

.info-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--blue-glow);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--blue);
}


/* ── Portfolio Page: Editorial Case Study ── */
.pf-case {
    padding: 120px 0;
    background: var(--white);
}

.pf-case.alt { background: var(--off-white); }

.pf-case-hero {
    border-radius: 24px;
    overflow: hidden;
    margin-bottom: 32px;
    position: relative;
}

.pf-case-hero img {
    width: 100%;
    height: auto;
    display: block;
}

.pf-case-hero .pf-live {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(0,0,0,.7);
    color: var(--white);
    font-size: .75rem;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 100px;
    display: flex;
    align-items: center;
    gap: 6px;
    backdrop-filter: blur(8px);
}

.pf-case-hero .pf-live::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #34D399;
    animation: pf-pulse 1.5s infinite;
}

@keyframes pf-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .3; }
}

.pf-case-meta {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 48px;
}

.pf-case-meta h3 {
    font-family: var(--font-h);
    font-size: 1.6rem;
    font-weight: 700;
}

.pf-case-meta .pf-industry {
    font-size: .8rem;
    color: var(--gray-500);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}

.pf-case-meta p {
    font-size: .95rem;
    color: var(--gray-500);
    max-width: 480px;
    margin-top: 8px;
}

.pf-visit {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font);
    font-size: .88rem;
    font-weight: 600;
    color: var(--white);
    background: var(--navy);
    padding: 14px 28px;
    border-radius: 100px;
    flex-shrink: 0;
    transition: transform .2s;
}

.pf-visit:hover { transform: translateY(-2px); }

/* Feature grid 2x2 for case study */
.pf-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.pf-feat {
    background: var(--off-white);
    border-radius: 16px;
    overflow: hidden;
    transition: transform .3s;
}

.pf-feat:hover { transform: translateY(-4px); }

.pf-feat-img {
    border-radius: 16px 16px 0 0;
    overflow: hidden;
    max-height: 200px;
}

.pf-feat-img img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }

.pf-feat-text {
    padding: 20px 24px;
}

.pf-feat-text strong {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-h);
    font-size: .9rem;
    margin-bottom: 4px;
}

.pf-feat-text p {
    font-size: .82rem;
    color: var(--gray-500);
}

.pf-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 32px;
}

.pf-tags span {
    font-size: .75rem;
    font-weight: 600;
    color: var(--gray-500);
    background: var(--off-white);
    padding: 6px 14px;
    border-radius: 100px;
    display: flex;
    align-items: center;
    gap: 4px;
}


/* ── Responsive ── */
@media (max-width: 900px) {
    .sub-hero { padding: 140px 0 80px; }
    .tiers { padding: 80px 0; }
    .tier-section { padding: 80px 0; }
    .tier-split { grid-template-columns: 1fr; gap: 40px; }
    .tier-price-big { font-size: 2.2rem; }
    .info-section { padding: 80px 0; }
    .pf-case { padding: 80px 0; }

    .tier-head { padding: 24px; flex-wrap: wrap; gap: 16px; }
    .tier-body-inner { grid-template-columns: 1fr; padding: 0 24px 24px; }
    .tier-price { font-size: 1.4rem; }

    .info-steps { grid-template-columns: 1fr; }
    .info-platforms { grid-template-columns: 1fr 1fr; }

    .pf-case-meta { flex-direction: column; align-items: flex-start; gap: 20px; }
    .pf-features { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .tier-left { flex-direction: column; align-items: flex-start; gap: 12px; }
    .tier-right { width: 100%; justify-content: space-between; }
    .tier-btns { flex-direction: column; }
    .tier-cta, .tier-demo { justify-content: center; width: 100%; }
    .info-platforms { grid-template-columns: 1fr; }
}