/* ══════════════════════════════════════════
   Promotions Page CSS
   Đồng bộ với design system: màu đỏ #2563EB,
   không dùng font khác, không emoji
══════════════════════════════════════════ */

/* ── HERO ──────────────────────────────── */
.promo-hero {
    background: linear-gradient(135deg, #0F172A 0%, #16213E 50%, #2563EB 100%);
    border-radius: var(--r-lg);
    padding: 64px 48px;
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
}

.promo-hero__glow {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    background: radial-gradient(circle, rgba(37,99,235,.2) 0%, transparent 70%);
}
.promo-hero__glow--1 {
    width: 500px; height: 500px;
    top: -200px; right: -100px;
}
.promo-hero__glow--2 {
    width: 300px; height: 300px;
    bottom: -100px; left: -50px;
    opacity: .6;
}

.promo-hero__content { position: relative; z-index: 1; }

.promo-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: rgba(245,158,11,.15);
    border: 1px solid rgba(245,158,11,.3);
    color: #F59E0B;
    padding: 5px 14px;
    border-radius: 99px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.promo-hero__title {
    font-family: var(--font-display);
    font-size: clamp(32px, 6vw, 72px);
    font-weight: 800;
    color: #fff;
    line-height: 1.05;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
}
.promo-hero__title-red { color: #F59E0B; }

.promo-hero__btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #F59E0B;
    color: #fff;
    padding: 14px 32px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: .2s;
    margin-top: 8px;
}
.promo-hero__btn:hover {
    background: #D97706;
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(245,158,11,.35);
}

/* ── COUNTDOWN ─────────────────────────── */
.promo-countdown {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin: 24px 0;
}
.promo-countdown__item {
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 10px;
    padding: 12px 20px;
    min-width: 72px;
    text-align: center;
    backdrop-filter: blur(8px);
}
.promo-countdown__num {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}
.promo-countdown__label {
    font-size: 10px;
    color: rgba(255,255,255,.45);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-top: 4px;
}
.promo-countdown__sep {
    font-size: 28px;
    font-weight: 700;
    color: rgba(255,255,255,.3);
    line-height: 1;
    margin-bottom: 16px;
}

/* ── MÃ GIẢM GIÁ ───────────────────────── */
.coupon-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 52px;
}
.coupon-card {
    display: flex;
    align-items: stretch;
    background: var(--bg-alt);
    border: 1.5px dashed var(--accent);
    border-radius: var(--r-lg);
    overflow: hidden;
}
.coupon-card__value {
    flex-shrink: 0;
    width: 96px;
    background: var(--accent-light);
    color: var(--accent);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 20px;
    text-align: center;
    padding: 12px 8px;
}
.coupon-card__body {
    flex: 1;
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    min-width: 0;
}
.coupon-card__code {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 15px;
    color: var(--ink);
    letter-spacing: .5px;
}
.coupon-card__cond {
    font-size: 12px;
    color: var(--ink-muted);
}
.coupon-card__copy {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    margin-top: 2px;
}
.coupon-card__copy:hover { text-decoration: underline; }

/* ── PROMO CARDS GRID ──────────────────── */
.promo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 52px;
}

.promo-card {
    border-radius: var(--r-lg);
    padding: 24px;
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    cursor: pointer;
    transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}
.promo-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0);
    transition: background .2s;
}
.promo-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 40px rgba(0,0,0,.2);
}
.promo-card:hover::before {
    background: rgba(255,255,255,.05);
}

/* Màu sắc đồng bộ với theme đỏ */
.pc-1 { background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%); }
.pc-2 { background: linear-gradient(135deg, #1a1f2e 0%, #2d3748 100%); }
.pc-3 { background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%); }
.pc-4 { background: linear-gradient(135deg, #7c2d12 0%, #9a3412 100%); }
.pc-5 { background: linear-gradient(135deg, #1e3a5f 0%, #1d4ed8 100%); }
.pc-6 { background: linear-gradient(135deg, #1a1a1a 0%, #374151 100%); }

.promo-card__icon {
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,.12);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    margin-bottom: 12px;
}

.promo-card__title {
    font-family: var(--font-display);
    font-size: 19px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}
.promo-card__desc {
    font-size: 13px;
    color: rgba(255,255,255,.6);
    margin-bottom: 14px;
}
.promo-card__link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    font-weight: 600;
    color: rgba(255,255,255,.8);
    text-decoration: none;
    transition: .2s;
    width: fit-content;
    border-bottom: 1px solid rgba(255,255,255,.3);
    padding-bottom: 2px;
}
.promo-card__link:hover { color: #fff; border-color: #fff; }

/* ── RESPONSIVE ────────────────────────── */
@media(max-width: 900px) {
    .promo-grid { grid-template-columns: repeat(2, 1fr); }
    .promo-hero  { padding: 48px 24px; }
}
@media(max-width: 600px) {
    .promo-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
    .promo-hero__title { letter-spacing: -.5px; }
    .promo-countdown__item { min-width: 56px; padding: 10px 14px; }
    .promo-countdown__num  { font-size: 22px; }
}
@media(max-width: 900px) {
    .coupon-grid { grid-template-columns: repeat(2, 1fr); }
}
@media(max-width: 600px) {
    .coupon-grid { grid-template-columns: 1fr; }
}