/* =====================================================================
   EMPIRE COIN — Giao diện web khách hàng
   Dark gaming theme · gold accent #f5b83d · glassy cards
   ===================================================================== */

:root {
    --bg: #0b0e14;
    --bg-2: #0e1219;
    --surface: #12161f;
    --surface-2: #171c28;
    --border: #1c2230;
    --border-2: #2a3245;
    --text: #e8ecf4;
    --muted: #8b93a7;
    --gold: #f5b83d;
    --gold-2: #ffd97a;
    --gold-dark: #c98f1e;
    --green: #38c172;
    --red: #e3342f;
    --orange: #f6993f;
    --blue: #4f8cff;
    --purple: #9f7aea;
    --radius: 14px;
    --radius-sm: 10px;
    --shadow: 0 18px 48px rgba(0, 0, 0, .4);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --mono: ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas, monospace;
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 15.5px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; }
a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--gold-2); }
code { font-family: var(--mono); background: rgba(245, 184, 61, .12); color: var(--gold-2); padding: 1px 6px; border-radius: 6px; font-size: .92em; }

/* Nền phát sáng */
.bg-glow {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(ellipse 55% 38% at 50% -8%, rgba(245, 184, 61, .13), transparent),
        radial-gradient(ellipse 42% 34% at 92% 18%, rgba(79, 140, 255, .07), transparent),
        radial-gradient(ellipse 46% 38% at 4% 92%, rgba(159, 122, 234, .06), transparent);
}

.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.container-narrow { max-width: 820px; }

/* =============================== GLASS / CARD =============================== */
.glass {
    background: linear-gradient(160deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .012));
    border: 1px solid rgba(255, 255, 255, .085);
    border-radius: var(--radius);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

/* =============================== BUTTONS =============================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 22px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font: 600 14.5px/1.2 var(--font);
    cursor: pointer;
    transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
    white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }

.btn-gold {
    background: linear-gradient(135deg, var(--gold-2), var(--gold) 55%, #e19c14);
    color: #16130a;
    box-shadow: 0 8px 26px rgba(245, 184, 61, .28);
}
.btn-gold:hover { color: #16130a; box-shadow: 0 10px 32px rgba(245, 184, 61, .42); transform: translateY(-1px); }

.btn-outline {
    background: rgba(245, 184, 61, .05);
    border-color: rgba(245, 184, 61, .45);
    color: var(--gold);
}
.btn-outline:hover { background: rgba(245, 184, 61, .12); color: var(--gold-2); }

.btn-ghost { background: transparent; color: var(--muted); border-color: var(--border-2); }
.btn-ghost:hover { color: var(--text); border-color: var(--muted); }

.btn-lg { padding: 14px 30px; font-size: 15.5px; border-radius: 12px; }
.btn-sm { padding: 8px 16px; font-size: 13.5px; }
.btn-block { width: 100%; }

/* =============================== NAV =============================== */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 14, 20, .82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 66px; gap: 20px; }

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; color: var(--text); letter-spacing: .3px; }
.brand:hover { color: var(--gold-2); }
.brand-coin { display: inline-flex; filter: drop-shadow(0 3px 10px rgba(245, 184, 61, .45)); }
.brand-text { background: linear-gradient(120deg, #fff, var(--gold-2)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
    padding: 9px 14px;
    border-radius: 9px;
    color: var(--muted);
    font-weight: 500;
    font-size: 14.5px;
    transition: color .15s, background .15s;
}
.nav-link:hover { color: var(--text); background: rgba(255, 255, 255, .05); }
.nav-link.active { color: var(--gold); background: rgba(245, 184, 61, .1); }
.nav-cta { margin-left: 10px; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 10px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; border-radius: 2px; transition: transform .2s, opacity .2s; }
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =============================== SECTIONS =============================== */
.site-main { min-height: 60vh; }
.section { padding: 64px 0; }
.section-head { text-align: center; margin-bottom: 36px; }
.section-title { font-size: clamp(24px, 3.4vw, 34px); font-weight: 800; letter-spacing: -.4px; }
.section-sub { color: var(--muted); max-width: 640px; margin: 10px auto 0; }
.page-title { font-size: clamp(22px, 3vw, 30px); font-weight: 800; }
.page-sub { color: var(--muted); margin-top: 8px; }
.gold-text { color: var(--gold); text-shadow: 0 0 28px rgba(245, 184, 61, .35); }
.anchor-target { position: relative; top: -90px; height: 0; visibility: hidden; }

/* =============================== HERO =============================== */
.hero { padding: 76px 0 40px; position: relative; }
.hero-inner { display: grid; grid-template-columns: 1.25fr 1fr; gap: 48px; align-items: center; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 7px 14px; border-radius: 999px;
    background: rgba(56, 193, 114, .1);
    border: 1px solid rgba(56, 193, 114, .3);
    color: var(--green); font-size: 13px; font-weight: 600;
}
.dot-live { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(56, 193, 114, .6); animation: pulse 1.8s infinite; }
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(56, 193, 114, .55); }
    70% { box-shadow: 0 0 0 9px rgba(56, 193, 114, 0); }
    100% { box-shadow: 0 0 0 0 rgba(56, 193, 114, 0); }
}
.hero-title { font-size: clamp(30px, 4.6vw, 48px); line-height: 1.16; font-weight: 850; letter-spacing: -1px; margin: 18px 0 16px; }
.hero-sub { color: var(--muted); font-size: 16.5px; max-width: 540px; }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.hero-actions.center { justify-content: center; }
.hero-points { list-style: none; margin-top: 28px; display: grid; gap: 9px; }
.hero-points li { color: var(--muted); font-size: 14px; padding-left: 26px; position: relative; }
.hero-points li::before { content: "✓"; position: absolute; left: 0; color: var(--gold); font-weight: 800; }

.hero-card { padding: 26px; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.hero-card::before {
    content: ""; position: absolute; inset: -40% 40% 60% -40%;
    background: radial-gradient(circle, rgba(245, 184, 61, .16), transparent 65%);
    pointer-events: none;
}
.hero-card-row { display: flex; align-items: center; justify-content: space-between; padding: 13px 0; border-bottom: 1px dashed var(--border-2); }
.hero-card-row:last-of-type { border-bottom: 0; }
.hero-card-label { color: var(--muted); font-size: 14px; }
.hero-card-val { font-size: 20px; font-weight: 800; font-variant-numeric: tabular-nums; }
.hero-card-val .unit { font-size: 12.5px; color: var(--muted); font-weight: 500; }
.hero-card-foot { margin-top: 12px; font-size: 12.5px; color: var(--muted); text-align: center; }

/* =============================== RATES =============================== */
.rates-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.rate-card { padding: 24px; transition: transform .2s, border-color .2s; }
.rate-card:hover { transform: translateY(-3px); border-color: rgba(245, 184, 61, .35); }
.rate-card-head { display: flex; align-items: center; gap: 10px; color: var(--muted); font-weight: 600; font-size: 14px; text-transform: uppercase; letter-spacing: .6px; }
.rate-icon {
    width: 30px; height: 30px; display: inline-flex; align-items: center; justify-content: center;
    border-radius: 9px; font-size: 15px; font-weight: 800;
    background: rgba(245, 184, 61, .13); color: var(--gold);
}
.rate-sell .rate-icon { background: rgba(79, 140, 255, .13); color: var(--blue); }
.rate-stock .rate-icon { background: rgba(56, 193, 114, .13); color: var(--green); }
.rate-card-val { font-size: 27px; font-weight: 800; margin: 12px 0 6px; font-variant-numeric: tabular-nums; }
.rate-buy .rate-card-val { color: var(--gold); }
.rate-unit { font-size: 13.5px; color: var(--muted); font-weight: 500; }
.rate-card-note { color: var(--muted); font-size: 13px; }

.stock-badge {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 7px 14px; border-radius: 999px; font-size: 14px; font-weight: 700;
}
.stock-badge.in { background: rgba(56, 193, 114, .12); color: var(--green); border: 1px solid rgba(56, 193, 114, .35); }
.stock-badge.out { background: rgba(227, 52, 47, .12); color: #ff6b66; border: 1px solid rgba(227, 52, 47, .4); }

/* =============================== TABS & FORM =============================== */
.order-panel { padding: 30px; box-shadow: var(--shadow); }
.tabs {
    display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
    background: rgba(0, 0, 0, .3);
    padding: 6px; border-radius: 12px; margin-bottom: 28px;
    border: 1px solid var(--border);
}
.tab-btn {
    padding: 12px; border: 0; border-radius: 9px; cursor: pointer;
    background: transparent; color: var(--muted);
    font: 700 15px var(--font); transition: background .18s, color .18s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
    background: linear-gradient(135deg, var(--gold-2), var(--gold) 60%, #e19c14);
    color: #16130a;
    box-shadow: 0 6px 20px rgba(245, 184, 61, .3);
}
.tab-pane { display: none; }
.tab-pane.active { display: block; animation: fadeUp .25s ease; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; font-weight: 600; color: var(--text); }
.req { color: var(--gold); }

.field input, .field select, .field textarea, .combo input, .lookup-row input {
    width: 100%;
    background: rgba(0, 0, 0, .32);
    border: 1px solid var(--border-2);
    border-radius: var(--radius-sm);
    color: var(--text);
    padding: 12px 14px;
    font: 500 15px var(--font);
    transition: border-color .15s, box-shadow .15s;
    appearance: none;
}
.field textarea { resize: vertical; min-height: 54px; }
.field select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238b93a7' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
    cursor: pointer;
}
.field input:focus, .field select:focus, .field textarea:focus, .combo input:focus, .lookup-row input:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(245, 184, 61, .16);
}
.field input.invalid, .combo input.invalid { border-color: var(--red); box-shadow: 0 0 0 3px rgba(227, 52, 47, .14); }
.field input::placeholder, .field textarea::placeholder, .combo input::placeholder { color: #5a6276; }

.hint { font-size: 12.5px; color: var(--muted); }
.hint a { text-decoration: underline; text-underline-offset: 2px; }

.contact-pair { display: flex; flex-direction: column; gap: 10px; }
.contact-pair input[hidden] { display: none; }

/* Nhóm chip chọn kênh liên hệ — thay cho select mặc định của trình duyệt */
.chip-group { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
    background: rgba(0, 0, 0, .32);
    border: 1px solid var(--border-2);
    border-radius: 999px;
    color: var(--muted);
    padding: 8px 15px;
    font: 600 13.5px var(--font);
    cursor: pointer;
    transition: border-color .15s, color .15s, background .15s, box-shadow .15s;
    user-select: none;
}
.chip:hover { border-color: rgba(245, 184, 61, .45); color: var(--text); }
.chip.active {
    background: rgba(245, 184, 61, .12);
    border-color: var(--gold);
    color: var(--gold);
    box-shadow: 0 0 0 3px rgba(245, 184, 61, .12);
}
.chip:focus-visible { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(245, 184, 61, .2); }

.calc-box {
    background: rgba(245, 184, 61, .08);
    border: 1px dashed rgba(245, 184, 61, .4);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    font-size: 19px; font-weight: 800; color: var(--gold);
    font-variant-numeric: tabular-nums;
}
.calc-unit { font-size: 13px; color: var(--muted); font-weight: 600; }

.form-error {
    margin-top: 18px;
    background: rgba(227, 52, 47, .1);
    border: 1px solid rgba(227, 52, 47, .4);
    color: #ff8a86;
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 14px;
}
.order-form .btn-block { margin-top: 20px; }
.form-foot { margin-top: 14px; text-align: center; color: var(--muted); font-size: 13px; }

/* Combo chọn ngân hàng */
.combo { position: relative; }
.combo-list {
    position: absolute; top: calc(100% + 6px); left: 0; right: 0; z-index: 60;
    max-height: 260px; overflow-y: auto;
    background: var(--surface-2);
    border: 1px solid var(--border-2);
    border-radius: var(--radius-sm);
    box-shadow: 0 18px 44px rgba(0, 0, 0, .55);
}
.combo-item { padding: 11px 14px; cursor: pointer; display: flex; flex-direction: column; gap: 2px; }
.combo-item:hover, .combo-item.hl { background: rgba(245, 184, 61, .1); }
.combo-item b { font-size: 14px; color: var(--text); }
.combo-item span { font-size: 12px; color: var(--muted); }
.combo-empty { padding: 14px; color: var(--muted); font-size: 13.5px; text-align: center; }

/* =============================== STEPS / FEATURES / FAQ =============================== */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step-card { padding: 28px 24px; position: relative; }
.step-num {
    width: 42px; height: 42px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--gold-2), var(--gold-dark));
    color: #16130a; font-weight: 800; font-size: 18px;
    box-shadow: 0 8px 22px rgba(245, 184, 61, .3);
    margin-bottom: 16px;
}
.step-card h3 { font-size: 17px; margin-bottom: 8px; }
.step-card p { color: var(--muted); font-size: 14px; }

.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.feature { padding: 24px 20px; text-align: center; transition: transform .2s, border-color .2s; }
.feature:hover { transform: translateY(-3px); border-color: rgba(245, 184, 61, .3); }
.feature-icon { font-size: 30px; margin-bottom: 12px; }
.feature h3 { font-size: 15.5px; margin-bottom: 8px; }
.feature p { color: var(--muted); font-size: 13.5px; }

.section-faq details { margin-bottom: 12px; overflow: hidden; }
.faq summary {
    cursor: pointer; list-style: none; padding: 17px 22px;
    font-weight: 600; font-size: 15px; position: relative; padding-right: 46px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
    content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
    color: var(--gold); font-size: 20px; font-weight: 700; transition: transform .2s;
}
.faq[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq p { padding: 0 22px 18px; color: var(--muted); font-size: 14px; }

/* =============================== BADGES (trạng thái đơn) =============================== */
.badge {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 7px 15px; border-radius: 999px;
    font-size: 13.5px; font-weight: 700; letter-spacing: .2px;
    border: 1px solid transparent;
}
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.badge-pending_payment  { background: rgba(245, 184, 61, .12); color: var(--gold);   border-color: rgba(245, 184, 61, .4); }
.badge-paid             { background: rgba(79, 140, 255, .12); color: var(--blue);   border-color: rgba(79, 140, 255, .4); }
.badge-hold_review      { background: rgba(246, 153, 63, .12); color: var(--orange); border-color: rgba(246, 153, 63, .4); }
.badge-pending_approval { background: rgba(159, 122, 234, .12); color: var(--purple); border-color: rgba(159, 122, 234, .4); }
.badge-transferring     { background: rgba(79, 140, 255, .12); color: var(--blue);   border-color: rgba(79, 140, 255, .4); }
.badge-completed        { background: rgba(56, 193, 114, .12); color: var(--green);  border-color: rgba(56, 193, 114, .4); }
.badge-cancelled        { background: rgba(139, 147, 167, .12); color: var(--muted); border-color: rgba(139, 147, 167, .35); }
.badge-failed           { background: rgba(227, 52, 47, .12); color: #ff6b66;        border-color: rgba(227, 52, 47, .45); }
.badge-loading          { background: rgba(139, 147, 167, .1); color: var(--muted);  border-color: var(--border-2); }

/* =============================== TRANG ĐƠN HÀNG =============================== */
.section-order-track { padding-top: 44px; }

.order-head {
    display: flex; align-items: center; justify-content: space-between; gap: 18px;
    padding: 22px 26px; margin-bottom: 18px; flex-wrap: wrap;
}
.order-head-label { color: var(--muted); font-size: 12.5px; text-transform: uppercase; letter-spacing: .8px; }
.order-code-row { display: flex; align-items: center; gap: 10px; margin-top: 4px; }
.order-code { font-family: var(--mono); font-size: 25px; font-weight: 800; color: var(--gold); letter-spacing: 1.5px; }

.copy-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 34px; height: 34px; border-radius: 9px; cursor: pointer;
    background: rgba(255, 255, 255, .06);
    border: 1px solid var(--border-2);
    color: var(--muted); font-size: 15px;
    transition: color .15s, border-color .15s, background .15s;
}
.copy-btn:hover { color: var(--gold); border-color: rgba(245, 184, 61, .5); background: rgba(245, 184, 61, .08); }

/* Hộp Steam ID của shop (form Bán Coin) */
.shop-steam-box {
    background: rgba(245, 184, 61, .07);
    border: 1px dashed rgba(245, 184, 61, .45);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    margin-bottom: 18px;
}
.shop-steam-head { font-weight: 700; font-size: 14.5px; margin-bottom: 10px; }
.shop-steam-row {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    margin-bottom: 8px;
}
.shop-steam-label { font-size: 12.5px; color: var(--muted); margin-bottom: 2px; }
.shop-steam-id {
    font-family: var(--mono); font-size: 18px; font-weight: 800;
    color: var(--gold); letter-spacing: .5px; word-break: break-all;
}

/* Dòng Steam ID trong banner trang đơn bán */
.tip-steam-row {
    display: inline-flex; align-items: center; gap: 10px;
    background: rgba(0, 0, 0, .3);
    border: 1px solid var(--border-2);
    border-radius: 9px;
    padding: 8px 12px;
    margin: 8px 0;
}
.tip-steam-id {
    font-family: var(--mono); font-size: 16.5px; font-weight: 800;
    color: var(--gold); letter-spacing: .5px; word-break: break-all;
}

/* Stepper */
.stepper-wrap { margin-bottom: 18px; }
.stepper { display: flex; padding: 22px 14px; }
.step { flex: 1; text-align: center; position: relative; }
.step::before {
    content: ""; position: absolute; top: 15px; left: -50%; width: 100%; height: 2px;
    background: var(--border-2); z-index: 0;
}
.step:first-child::before { display: none; }
.step.done::before, .step.active::before { background: linear-gradient(90deg, var(--gold-dark), var(--gold)); }
.step-dot {
    position: relative; z-index: 1;
    width: 32px; height: 32px; margin: 0 auto;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: var(--surface-2);
    border: 2px solid var(--border-2);
    color: var(--muted); font-weight: 700; font-size: 13px;
    transition: all .25s;
}
.step.done .step-dot { background: var(--gold); border-color: var(--gold); color: #16130a; }
.step.active .step-dot {
    border-color: var(--gold); color: var(--gold);
    box-shadow: 0 0 0 5px rgba(245, 184, 61, .15);
    animation: stepPulse 1.6s infinite;
}
@keyframes stepPulse {
    0%, 100% { box-shadow: 0 0 0 4px rgba(245, 184, 61, .12); }
    50% { box-shadow: 0 0 0 8px rgba(245, 184, 61, .05); }
}
.step-label { margin-top: 9px; font-size: 12.5px; color: var(--muted); font-weight: 600; }
.step.done .step-label, .step.active .step-label { color: var(--text); }
.stepper.stepper-dead .step-dot { opacity: .45; animation: none; box-shadow: none; }
.stepper.stepper-dead .step::before { opacity: .45; }

/* Banner trạng thái đặc biệt */
.notice { border-radius: var(--radius); padding: 16px 20px; margin-bottom: 18px; font-size: 14.5px; display: flex; gap: 12px; align-items: flex-start; }
.notice-ic { font-size: 20px; line-height: 1.3; }
.notice b { display: block; margin-bottom: 3px; }
.notice-info    { background: rgba(79, 140, 255, .09); border: 1px solid rgba(79, 140, 255, .35); color: #b9d1ff; }
.notice-warn    { background: rgba(246, 153, 63, .09); border: 1px solid rgba(246, 153, 63, .38); color: #ffd2a8; }
.notice-danger  { background: rgba(227, 52, 47, .1);  border: 1px solid rgba(227, 52, 47, .42); color: #ffb3b0; }
.notice-success { background: rgba(56, 193, 114, .1); border: 1px solid rgba(56, 193, 114, .4); color: #a8eec7; }
.notice a { text-decoration: underline; text-underline-offset: 2px; }

/* Hộp thanh toán */
.pay-box { margin-bottom: 18px; overflow: hidden; }
.pay-head {
    display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
    padding: 18px 24px; border-bottom: 1px solid var(--border);
}
.pay-head h2 { font-size: 17px; }
.countdown-pill {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(245, 184, 61, .1);
    border: 1px solid rgba(245, 184, 61, .4);
    color: var(--gold); border-radius: 999px;
    padding: 7px 16px; font-weight: 700; font-size: 14px;
    font-variant-numeric: tabular-nums;
}
.countdown-pill.danger { background: rgba(227, 52, 47, .12); border-color: rgba(227, 52, 47, .45); color: #ff6b66; }
.countdown-num { font-family: var(--mono); font-size: 15px; }

.pay-grid { display: grid; grid-template-columns: 250px 1fr; gap: 26px; padding: 24px; }
.qr-side { text-align: center; }
.qr-frame {
    background: #fff; border-radius: 14px; padding: 10px;
    box-shadow: 0 10px 34px rgba(0, 0, 0, .4);
    display: inline-block;
}
.qr-frame { position: relative; overflow: hidden; }
.qr-frame img { display: block; width: 230px; height: 230px; object-fit: contain; border-radius: 8px; }

/* Lằn quét QR tinh tế — mảnh, gradient gold theo theme, glow nhẹ.
   Chỉ chạy khi khung có class .scanning (ảnh QR đã tải). */
.qr-scanline {
    position: absolute; left: 14px; right: 14px; top: 14px; height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, transparent, rgba(245,184,61,.9) 50%, transparent);
    box-shadow: 0 0 10px 1px rgba(245, 184, 61, .5);
    opacity: 0;
    pointer-events: none;
}
.qr-frame.scanning .qr-scanline { animation: qrScan 2.6s ease-in-out infinite; }
@keyframes qrScan {
    0%   { transform: translateY(0); opacity: 0; }
    15%  { opacity: .95; }
    50%  { transform: translateY(200px); opacity: .95; }
    85%  { opacity: .95; }
    100% { transform: translateY(0); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
    .qr-frame.scanning .qr-scanline { animation: none; opacity: 0; }
}
.qr-note { margin-top: 10px; color: var(--muted); font-size: 12.5px; }
.qr-sources { display: flex; justify-content: center; gap: 6px; margin-top: 10px; }
.qr-src-btn {
    background: rgba(255,255,255,.05); border: 1px solid var(--border-2);
    color: var(--muted); border-radius: 8px; padding: 5px 12px;
    font: 600 12.5px var(--font); cursor: pointer;
    transition: color .15s, border-color .15s, background .15s;
}
.qr-src-btn:hover { color: var(--text); border-color: rgba(245,184,61,.45); }
.qr-src-btn.active { background: rgba(245,184,61,.14); border-color: var(--gold); color: var(--gold); }

.pay-rows { display: flex; flex-direction: column; gap: 10px; }
.pay-row {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    background: rgba(0, 0, 0, .28);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 11px 15px;
}
.pay-row-label { color: var(--muted); font-size: 13px; flex-shrink: 0; }
.pay-row-val { font-weight: 700; font-size: 15px; text-align: right; word-break: break-all; margin-left: auto; }
.pay-row.highlight { border-color: rgba(245, 184, 61, .5); background: rgba(245, 184, 61, .07); }
.pay-row.highlight .pay-row-val { color: var(--gold); font-family: var(--mono); font-size: 17px; letter-spacing: 1px; }

.pay-warning {
    margin: 0 24px 24px;
    background: rgba(227, 52, 47, .09);
    border: 1px solid rgba(227, 52, 47, .38);
    border-radius: var(--radius-sm);
    padding: 13px 17px;
    color: #ffb3b0; font-size: 13.5px; line-height: 1.6;
}
.pay-warning b { color: #ff8a86; }
.pay-auto-note { margin: -8px 24px 22px; color: var(--muted); font-size: 13px; text-align: center; }

/* Panel kết quả */
.result-panel { text-align: center; padding: 42px 28px; margin-bottom: 18px; }
.result-icon { font-size: 52px; margin-bottom: 14px; display: inline-block; }
.result-panel h2 { font-size: 22px; margin-bottom: 8px; }
.result-panel.success h2 { color: var(--green); }
.result-panel.danger h2 { color: #ff6b66; }
.result-panel p { color: var(--muted); max-width: 480px; margin: 0 auto 18px; }

/* Thông tin đơn */
.order-info { padding: 6px 24px; margin-bottom: 22px; }
.order-loading { display: flex; align-items: center; justify-content: center; gap: 12px; color: var(--muted); padding: 28px 0; }
.spinner {
    width: 20px; height: 20px; border-radius: 50%;
    border: 2.5px solid var(--border-2); border-top-color: var(--gold);
    animation: spin .8s linear infinite; flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }
.info-row {
    display: flex; align-items: center; justify-content: space-between; gap: 14px;
    padding: 13px 0; border-bottom: 1px dashed var(--border-2);
}
.info-row:last-child { border-bottom: 0; }
.info-label { color: var(--muted); font-size: 13.5px; flex-shrink: 0; }
.info-val { font-weight: 600; font-size: 14.5px; text-align: right; word-break: break-all; }
.info-val.gold { color: var(--gold); }
.info-val.mono { font-family: var(--mono); letter-spacing: .5px; }

.order-foot-links { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* =============================== TRA CỨU =============================== */
.section-lookup { padding-top: 56px; }
.lookup-panel { padding: 44px 40px; text-align: center; }
.lookup-icon { font-size: 42px; margin-bottom: 12px; }
.lookup-form { max-width: 480px; margin: 26px auto 0; }
.lookup-row { display: flex; gap: 10px; }
.lookup-row input {
    flex: 1; text-transform: uppercase;
    font-family: var(--mono); font-weight: 700; letter-spacing: 2px; font-size: 16px;
    text-align: center;
}
.lookup-hints { margin-top: 34px; display: grid; gap: 14px; text-align: left; }
.hint-item {
    background: rgba(0, 0, 0, .25);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 18px; font-size: 13.5px; color: var(--muted);
}
.hint-item strong { display: block; color: var(--text); margin-bottom: 3px; font-size: 14px; }

/* =============================== CHÍNH SÁCH =============================== */
.policy { padding: 28px 30px; margin-bottom: 18px; }
.policy h2 { font-size: 18px; margin-bottom: 14px; color: var(--gold); }
.policy ul { list-style: none; display: grid; gap: 10px; }
.policy li { color: #c3c9d6; font-size: 14.5px; padding-left: 24px; position: relative; }
.policy li::before { content: "▸"; position: absolute; left: 4px; color: var(--gold); }
.policy-cta { text-align: center; margin-top: 30px; color: var(--muted); }
.policy-cta .btn { margin-top: 12px; }

/* =============================== LIÊN HỆ =============================== */
.contact-grid { display: grid; gap: 16px; }
.contact-card {
    display: flex; align-items: center; gap: 18px;
    padding: 22px 26px;
    transition: transform .2s, border-color .2s;
    color: var(--text);
}
.contact-card:hover { transform: translateX(4px); border-color: rgba(245, 184, 61, .4); color: var(--text); }
.contact-icon {
    width: 52px; height: 52px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    border-radius: 14px;
    background: var(--brand, rgba(245, 184, 61, .12));
    color: #fff;
    box-shadow: 0 6px 16px -6px var(--brand-glow, transparent);
    transition: transform .15s;
}
.contact-icon svg { width: 28px; height: 28px; }
.contact-card:hover .contact-icon { transform: scale(1.06); }

/* Màu thương hiệu chính thức từng kênh */
.contact-telegram { --brand: linear-gradient(135deg, #2AABEE, #229ED9); --brand-glow: rgba(34, 158, 217, .6); }
.contact-discord  { --brand: #5865F2; --brand-glow: rgba(88, 101, 242, .55); }
.contact-facebook { --brand: #1877F2; --brand-glow: rgba(24, 119, 242, .55); }
.contact-telegram:hover { border-color: rgba(34, 158, 217, .5); }
.contact-discord:hover  { border-color: rgba(88, 101, 242, .5); }
.contact-facebook:hover { border-color: rgba(24, 119, 242, .5); }
.contact-label { font-weight: 800; font-size: 16px; }
.contact-value { color: var(--gold); font-size: 14px; margin: 2px 0 4px; word-break: break-all; }
.contact-desc { color: var(--muted); font-size: 13px; margin: 0; }
.contact-arrow { margin-left: auto; color: var(--muted); font-size: 20px; }
.contact-card:hover .contact-arrow { color: var(--gold); }
.contact-note { margin-top: 26px; padding: 24px 28px; }
.contact-note h2 { font-size: 16px; margin-bottom: 8px; color: var(--gold); }
.contact-note p { color: var(--muted); font-size: 14px; margin-bottom: 8px; }
.contact-tip { border-top: 1px dashed var(--border-2); padding-top: 12px; }

/* =============================== 404 =============================== */
.section-404 { padding: 90px 0; }
.panel-404 { text-align: center; padding: 54px 34px; }
.code-404 {
    font-size: clamp(64px, 12vw, 110px); font-weight: 900; line-height: 1;
    background: linear-gradient(140deg, var(--gold-2), var(--gold-dark));
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
    letter-spacing: -3px;
}
.panel-404 .page-sub { max-width: 440px; margin: 10px auto 26px; }

/* =============================== FOOTER =============================== */
.site-footer { border-top: 1px solid var(--border); background: rgba(0, 0, 0, .25); margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: 36px; padding: 46px 20px 30px; }
.footer-brand { font-weight: 800; font-size: 18px; color: var(--gold); margin-bottom: 10px; }
.footer-desc { color: var(--muted); font-size: 13.5px; }
.footer-disclaimer { margin-top: 12px; color: #6a7288; font-size: 12.5px; }
.footer-disclaimer strong { color: var(--muted); }
.footer-title { font-weight: 700; font-size: 14px; text-transform: uppercase; letter-spacing: .8px; color: var(--text); margin-bottom: 14px; }
.footer-links { list-style: none; display: grid; gap: 9px; }
.footer-links a { color: var(--muted); font-size: 14px; }
.footer-links a:hover { color: var(--gold); }
.footer-hours { margin-top: 12px; }
.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 18px 20px; text-align: center;
    color: #6a7288; font-size: 13px;
}

/* =============================== TOAST =============================== */
.toast-wrap {
    position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
    z-index: 999; display: flex; flex-direction: column; gap: 10px; align-items: center;
    pointer-events: none; padding: 0 16px; width: 100%; max-width: 440px;
}
.toast {
    background: var(--surface-2);
    border: 1px solid var(--border-2);
    border-left: 3px solid var(--green);
    color: var(--text);
    padding: 12px 20px; border-radius: 11px;
    box-shadow: 0 14px 40px rgba(0, 0, 0, .5);
    font-size: 14px; font-weight: 500;
    animation: toastIn .25s ease;
    max-width: 100%;
}
.toast.err { border-left-color: var(--red); }
.toast.out { animation: toastOut .25s ease forwards; }
@keyframes toastIn { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes toastOut { to { opacity: 0; transform: translateY(10px); } }

/* =============================== RESPONSIVE =============================== */
@media (max-width: 980px) {
    .hero-inner { grid-template-columns: 1fr; gap: 34px; }
    .hero-visual { max-width: 460px; }
    .rates-grid, .steps-grid { grid-template-columns: 1fr 1fr; }
    .rate-stock { grid-column: 1 / -1; }
    .features-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-about { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
    .nav-toggle { display: block; }
    .nav-links {
        position: absolute; top: 66px; left: 0; right: 0;
        flex-direction: column; align-items: stretch; gap: 4px;
        background: rgba(11, 14, 20, .98);
        border-bottom: 1px solid var(--border);
        padding: 14px 20px 20px;
        display: none;
    }
    body.nav-open .nav-links { display: flex; }
    .nav-link { padding: 12px 14px; }
    .nav-cta { margin: 8px 0 0; }
}

@media (max-width: 720px) {
    .section { padding: 44px 0; }
    .hero { padding: 48px 0 26px; }
    .form-grid { grid-template-columns: 1fr; }
    .rates-grid, .steps-grid, .features-grid { grid-template-columns: 1fr; }
    .pay-grid { grid-template-columns: 1fr; }
    .qr-side { order: -1; }
    .order-panel { padding: 22px 18px; }
    .lookup-panel { padding: 32px 20px; }
    .lookup-row { flex-direction: column; }
    .footer-grid { grid-template-columns: 1fr; gap: 26px; }
    .step-label { font-size: 11px; }
    .order-head { padding: 18px; }
    .order-code { font-size: 20px; }
    .order-foot-links { flex-direction: column; }
    .order-foot-links .btn { width: 100%; }
    .contact-pair { grid-template-columns: 1fr; }
}