/* ============================================================
   Bogo landing v3 — Pinterest-style, bố cục tinh gọn
   Palette v1: accent #1E4FA6 · navy #12315E · gold #F2B72E/#EDB128
   Font: Plus Jakarta Sans (self-hosted)
   Nguyên tắc sạch: card không viền (chỉ shadow nhẹ), 1 nhịp spacing,
   media pin đồng chiều cao, kicker + title thống nhất.
   ============================================================ */

:root {
    --primary: #1E4FA6;
    --primary-ink: #FFFFFF;
    --bg: #F8FAFC;
    --fg: #1E293B;
    --muted: #475569;
    --muted-bg: #E9EFF8;
    --card: #FFFFFF;
    --border: #E2E8F0;
    --accent: #F2B72E;
    --accent-hover: #EDB128;
    --accent-ink: #12315E;
    --glass: rgba(255, 255, 255, 0.78);
    --glass-border: rgba(255, 255, 255, 0.55);
    --radius: 20px;
    --shadow-1: 0 1px 2px rgba(15, 23, 42, .05), 0 6px 20px rgba(15, 23, 42, .06);
    --shadow-2: 0 4px 12px rgba(15, 23, 42, .10), 0 16px 40px rgba(15, 23, 42, .10);
    --container: 1120px;
    --font: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --t-fast: 150ms;
    --t-med: 250ms;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--fg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; }

h1, h2, h3 { line-height: 1.18; letter-spacing: -0.02em; font-weight: 700; }

button, .chip, .btn { cursor: pointer; }

:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 6px; }

/* ---------- Pill nav (glassmorphism) ---------- */
.pillnav {
    position: fixed; top: 16px; left: 50%; transform: translateX(-50%); z-index: 60;
    display: flex; align-items: center; gap: 8px;
    width: min(var(--container) - 32px, calc(100% - 32px));
    padding: 8px 10px;
    background: var(--glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    box-shadow: var(--shadow-1);
}
.pillnav-brand { display: flex; align-items: center; padding-left: 8px; }
.pillnav-links { display: flex; gap: 4px; margin-left: auto; }
.pillnav-links a {
    color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600;
    padding: 8px 14px; border-radius: 999px; transition: background var(--t-fast), color var(--t-fast);
}
.pillnav-links a:hover { background: var(--muted-bg); color: var(--fg); }
.pillnav-phone { display: inline-flex; align-items: center; gap: 6px; color: var(--primary) !important; font-weight: 700; }
.pillnav-phone .bi { font-size: 13px; }
.pillnav-cta {
    background: var(--accent); color: var(--accent-ink);
    text-decoration: none; font-size: 14px; font-weight: 700;
    padding: 9px 18px; border-radius: 999px; margin-left: 8px;
    transition: background var(--t-fast), transform var(--t-fast);
}
.pillnav-cta:hover { background: var(--accent-hover); transform: translateY(-1px); }
.pillnav-burger { display: none; background: none; border: 0; font-size: 24px; color: var(--fg); padding: 8px 12px; border-radius: 999px; }
.pillnav-menu { display: none; }

/* ---------- Hero ---------- */
.hero { max-width: 860px; margin: 0 auto; padding: 136px 24px 0; text-align: center; }
.hero h1 { font-size: clamp(2.3rem, 5.5vw, 3.9rem); font-weight: 800; letter-spacing: -0.035em; }
.hero h1 em { font-style: normal; color: var(--primary); }
.hero-sub { color: var(--muted); font-size: clamp(1rem, 2vw, 1.18rem); max-width: 54ch; margin: 16px auto 0; }

.hero-actions { display: flex; justify-content: center; gap: 14px; margin-top: 28px; flex-wrap: wrap; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 24px; border-radius: 999px; border: 1px solid transparent;
    font-family: inherit; font-size: 15px; font-weight: 700; text-decoration: none;
    transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
}
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-gold { background: var(--accent); color: var(--accent-ink); }
.btn-gold:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow-1); }
.btn-outline { background: var(--card); color: var(--fg); border-color: var(--border); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* ---------- Stats: dải mảnh, không card ---------- */
.stats {
    display: grid; grid-template-columns: repeat(4, 1fr);
    margin-top: 56px; padding: 26px 0;
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.stat { padding: 0 16px; text-align: center; }
.stat + .stat { border-left: 1px solid var(--border); }
.stat-num { display: block; font-size: clamp(1.3rem, 2.2vw, 1.8rem); font-weight: 800; letter-spacing: -0.02em; color: var(--primary); font-variant-numeric: tabular-nums; white-space: nowrap; }
.stat-label { color: var(--muted); font-size: 13px; }

/* ---------- Quick actions (component Green SM) ---------- */
.quick-actions {
    max-width: var(--container); margin: 40px auto 0; padding: 0 24px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.qa-card {
    display: flex; align-items: center; gap: 16px;
    background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow-1);
    padding: 18px 20px; text-decoration: none;
    transition: box-shadow var(--t-med), transform var(--t-med);
}
.qa-card:hover { box-shadow: var(--shadow-2); transform: translateY(-2px); }
.qa-icon {
    flex-shrink: 0; display: inline-flex; width: 46px; height: 46px; align-items: center; justify-content: center;
    border-radius: 12px; background: var(--muted-bg); color: var(--primary); font-size: 20px;
}
.qa-text { display: grid; gap: 2px; min-width: 0; }
.qa-text strong { color: var(--fg); font-size: 15px; }
.qa-text small { color: var(--muted); font-size: 12.5px; }
.qa-arrow { margin-left: auto; color: var(--muted); font-size: 18px; transition: transform var(--t-fast), color var(--t-fast); }
.qa-card:hover .qa-arrow { transform: translateX(3px); color: var(--primary); }

/* ---------- Sticky CTA mobile (kiểu app CTA Green SM) ---------- */
.v3-sticky {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 55;
    display: none; align-items: center; gap: 12px;
    padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
    background: rgba(255, 255, 255, 0.94); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    border-top: 1px solid var(--border); box-shadow: 0 -6px 24px rgba(15, 23, 42, .08);
}
.v3-sticky-phone {
    display: inline-flex; align-items: center; gap: 8px;
    border: 1px solid var(--border); border-radius: 999px; padding: 10px 16px;
    color: var(--primary); font-weight: 700; font-size: 14px; text-decoration: none;
}
.v3-sticky .btn { flex: 1; }

/* ---------- Sections ---------- */
.board { max-width: var(--container); margin: 0 auto; padding: 72px 24px 0; }
.board-narrow { max-width: 780px; }
.board-head { text-align: center; margin-bottom: 36px; }
.kicker {
    font-size: 12.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
    color: #D9A32C; margin-bottom: 10px;
}
.board-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); letter-spacing: -0.03em; }
.board-sub { color: var(--muted); max-width: 58ch; margin: 12px auto 0; font-size: 15px; }

/* ---------- Chips (Pinterest) ---------- */
.chips {
    display: flex; gap: 8px; justify-content: safe center; flex-wrap: nowrap;
    overflow-x: auto; padding: 2px 2px 20px;
    scrollbar-width: none;
}
.chips::-webkit-scrollbar { display: none; }
.chip {
    flex-shrink: 0; font-family: inherit; font-size: 13.5px; font-weight: 600;
    color: var(--muted); background: var(--card); border: 1px solid var(--border);
    padding: 8px 16px; border-radius: 999px;
    transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.chip:hover { background: var(--muted-bg); color: var(--fg); }
.chip.is-active { background: var(--primary); color: #fff; border-color: var(--primary); }

.pins-empty { text-align: center; color: var(--muted); padding: 24px 0; }

/* ---------- Pin grid: đều 3 cột, media đồng chiều cao ---------- */
.pins { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pin {
    background: var(--card); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow-1);
    transition: box-shadow var(--t-med), transform var(--t-med);
    display: flex; flex-direction: column;
}
.pin:hover { box-shadow: var(--shadow-2); transform: translateY(-3px); }
.pin-media { position: relative; height: 200px; background: var(--muted-bg); overflow: hidden; display: flex; align-items: center; justify-content: center; }
.pin-media img { width: 100%; height: 100%; object-fit: contain; padding: 18px 32px; display: block; }
.pin-media--icon {
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #E9EFF8 0%, #DCE7F6 100%);
}
.pin-media-icon { font-size: 64px; color: var(--primary); opacity: .85; }
.pin-overlay {
    position: absolute; inset: 0; display: flex; align-items: flex-end; justify-content: center;
    padding-bottom: 16px; background: linear-gradient(180deg, rgba(15,23,42,0) 50%, rgba(15,23,42,.5) 100%);
    opacity: 0; transition: opacity var(--t-med);
}
.pin:hover .pin-overlay, .pin:focus-within .pin-overlay { opacity: 1; }
.pin-overlay-btn {
    background: var(--accent); color: var(--accent-ink); font-size: 13px; font-weight: 700;
    padding: 8px 16px; border-radius: 999px; transform: translateY(6px); transition: transform var(--t-med);
}
.pin:hover .pin-overlay-btn { transform: translateY(0); }
.pin-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.pin-body h3 { font-size: 16px; margin-bottom: 6px; }
.pin-body p { color: var(--muted); font-size: 14px; }

/* ---------- Steps ---------- */
.steps { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step {
    background: var(--card); border-radius: var(--radius); padding: 24px;
    box-shadow: var(--shadow-1);
}
.step-num {
    display: block; font-size: 13px; font-weight: 800; letter-spacing: .08em;
    color: var(--primary); margin-bottom: 10px; font-variant-numeric: tabular-nums;
}
.step h3 { font-size: 16px; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 14px; }

/* ---------- Pricing ---------- */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.plan { position: relative; }
.plan-featured { outline: 2px solid var(--primary); outline-offset: -2px; }
.plan-badge {
    position: absolute; top: 14px; right: 14px;
    background: var(--accent); color: var(--accent-ink);
    font-size: 11.5px; font-weight: 700; padding: 4px 12px; border-radius: 999px;
}
.plan-tagline { font-size: 13.5px; color: var(--primary); font-weight: 600; margin-top: 2px; }
.plan-desc { font-size: 13.5px; margin-top: 8px; min-height: 63px; }
.plan-price { font-size: 1.9rem; font-weight: 800; letter-spacing: -0.02em; margin-top: 14px; }
.plan-price small { font-size: .85rem; font-weight: 600; opacity: .6; }
.plan-note { font-size: 12.5px; color: var(--muted); margin: 2px 0 18px; }
.plan-features { list-style: none; margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--border); display: grid; gap: 10px; font-size: 13.5px; }
.plan-features .bi { color: var(--primary); margin-right: 9px; }

/* ---------- Testimonials: masonry xen kẽ ảnh + quote (kiểu Green SM) ---------- */
.tiles { columns: 4; column-gap: 16px; }
.tile {
    break-inside: avoid; margin-bottom: 16px;
    background: var(--card); border-radius: 12px; box-shadow: var(--shadow-1);
    padding: 26px 20px;
}
.tile-photo { padding: 0; overflow: hidden; }
.tile-photo img { display: block; width: 100%; height: auto; object-fit: cover; }
.tile-quote { text-align: center; }
.tile-icon {
    display: inline-flex; width: 48px; height: 48px; align-items: center; justify-content: center;
    border-radius: 999px; background: var(--primary); color: #fff;
    font-size: 22px; margin-bottom: 12px;
}
.tile-quote blockquote { font-size: 14px; }
.tile-quote figcaption { margin-top: 12px; display: grid; gap: 1px; }
.tile-quote figcaption strong { color: var(--fg); font-size: 15px; }
.tile-quote figcaption span { color: var(--muted); font-size: 12.5px; }

/* ---------- FAQ ---------- */
.faq {
    background: var(--card); border-radius: var(--radius);
    padding: 0 20px; margin-bottom: 10px; box-shadow: var(--shadow-1);
}
.faq summary {
    list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center;
    padding: 16px 0; font-weight: 600; font-size: 15px; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .bi { color: var(--muted); transition: transform var(--t-med); flex-shrink: 0; }
.faq[open] summary .bi { transform: rotate(45deg); color: var(--primary); }
.faq p { padding-bottom: 16px; color: var(--muted); font-size: 14.5px; }

/* ---------- Contact (CTA hội tụ) ---------- */
.lead-form {
    background: var(--card); border-radius: var(--radius);
    box-shadow: var(--shadow-1); padding: 28px; display: grid; gap: 18px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: grid; gap: 6px; }
.field label { font-size: 13.5px; font-weight: 600; color: var(--muted); }
.field input, .field select, .field textarea {
    font-family: inherit; font-size: 15px; color: var(--fg);
    border: 1px solid var(--border); border-radius: 12px; padding: 11px 14px;
    background: var(--bg); transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.field input:focus, .field select:focus, .field textarea:focus {
    outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(30, 79, 166, .16);
}
.field textarea { resize: vertical; }
.plan-pick { border: 0; display: flex; gap: 8px; flex-wrap: wrap; }
.plan-pick legend { font-size: 13.5px; font-weight: 600; color: var(--muted); margin-bottom: 8px; }
.plan-pick label { cursor: pointer; }
.plan-pick input { position: absolute; opacity: 0; pointer-events: none; }
.plan-pick span {
    display: inline-block; padding: 8px 18px; border: 1px solid var(--border); border-radius: 999px;
    font-size: 14px; font-weight: 600; background: var(--card);
    transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.plan-pick label:hover span { border-color: var(--primary); }
.plan-pick input:checked + span { background: var(--primary); color: #fff; border-color: var(--primary); }
.plan-pick input:focus-visible + span { outline: 3px solid var(--primary); outline-offset: 2px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-msg { border-radius: 12px; padding: 12px 16px; font-size: 14.5px; }
.form-ok { background: #ECFAF1; color: #147A43; border: 1px solid #B8E8CD; }
.form-err { background: #FDF0EF; color: #B3372E; border: 1px solid #F3CDC9; }
.contact-meta {
    list-style: none; display: flex; gap: 12px 28px; flex-wrap: wrap; justify-content: center;
    margin-top: 24px; color: var(--muted); font-size: 13.5px;
}
.contact-meta .bi { color: var(--primary); margin-right: 7px; }
.contact-meta a { color: inherit; text-decoration: none; }
.contact-meta a:hover { color: var(--fg); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); margin-top: 72px; padding: 48px 24px 28px; }
.footer-grid {
    max-width: var(--container); margin: 0 auto;
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
}
.footer-grid p { color: var(--muted); font-size: 13.5px; margin-top: 14px; max-width: 34ch; }
.footer-grid h4 { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; margin-bottom: 12px; color: var(--fg); }
.footer-grid nav { display: grid; gap: 8px; align-content: start; }
.footer-grid nav a { color: var(--muted); text-decoration: none; font-size: 13.5px; }
.footer-grid nav a:hover { color: var(--primary); }
.footer-grid h4 + h4 { margin-top: 20px; }
.copyright { color: var(--muted); font-size: 12.5px; max-width: var(--container); margin: 36px auto 0; padding-top: 20px; border-top: 1px solid var(--border); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    .pin, .btn, .pillnav-cta, .chip, .pin-overlay, .pin-overlay-btn, .faq summary .bi { transition: none; }
}

/* ---------- Responsive (375 / 768 / 1024 / 1440) ---------- */
@media (max-width: 1024px) {
    .pins { grid-template-columns: repeat(2, 1fr); }
    .tiles { columns: 3; }
    .plans { grid-template-columns: 1fr 1fr; }
    .steps { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .hero { padding-top: 108px; }
    .stat { padding: 0 20px; }
    .plans { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .board { padding: 48px 20px 0; }
}
@media (max-width: 640px) {
    .pillnav-links, .pillnav-cta { display: none; }
    .pillnav-burger { display: block; margin-left: auto; }
    body.nav-open .pillnav-menu {
        display: grid; gap: 4px; position: absolute; top: calc(100% + 8px); left: 0; right: 0;
        background: rgba(255, 255, 255, 0.96); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
        border: 1px solid var(--glass-border); border-radius: 24px; padding: 12px; box-shadow: var(--shadow-2);
    }
    .pillnav-menu a { color: var(--fg); text-decoration: none; font-size: 15px; font-weight: 600; padding: 12px 16px; border-radius: 16px; }
    .pillnav-menu a:hover { background: var(--muted-bg); }
    .pins { grid-template-columns: 1fr; }
    .tiles { columns: 2; column-gap: 12px; }
    .stats { grid-template-columns: 1fr 1fr; row-gap: 18px; padding: 22px 0; }
    .stat:nth-child(3) { border-left: 0; }
    .quick-actions { grid-template-columns: 1fr; }
    .v3-sticky { display: flex; }
    body { padding-bottom: 74px; }
    .form-row { grid-template-columns: 1fr; }
}