/* ============================================================
   Burger Lab — Restaurant FX layer
   Interactive backgrounds + UI/transaction polish (additive).
   Style direction: Vibrant & Block + Motion-Driven, warm ember palette.
   ============================================================ */

:root {
    --fx-ember: #ff8c00;
    --fx-flame: #ff5722;
    --fx-glow: rgba(255, 140, 0, 0.55);
    --fx-red: #e63946;
}

/* ---------- Global animated restaurant background ---------- */
.resto-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
    background:
        radial-gradient(1200px 700px at 15% -10%, rgba(230, 57, 70, 0.16), transparent 60%),
        radial-gradient(1000px 600px at 100% 10%, rgba(255, 140, 0, 0.14), transparent 55%);
}
.resto-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.5;
    mix-blend-mode: screen;
    animation: blobDrift 22s ease-in-out infinite alternate;
}
.resto-blob.b1 { width: 460px; height: 460px; top: -80px; right: -60px;
    background: radial-gradient(circle, var(--fx-flame), transparent 68%); }
.resto-blob.b2 { width: 520px; height: 520px; bottom: -120px; left: -80px;
    background: radial-gradient(circle, var(--fx-ember), transparent 68%);
    animation-duration: 28s; animation-delay: -6s; }
.resto-blob.b3 { width: 380px; height: 380px; top: 40%; left: 45%;
    background: radial-gradient(circle, var(--fx-red), transparent 70%);
    animation-duration: 34s; animation-delay: -12s; opacity: 0.35; }

/* Faint drifting sesame/dot grain */
.resto-grain {
    position: absolute;
    inset: -50%;
    background-image: radial-gradient(rgba(255, 200, 120, 0.10) 1px, transparent 1.6px);
    background-size: 46px 46px;
    animation: grainDrift 40s linear infinite;
}

@keyframes blobDrift {
    0%   { transform: translate(0, 0) scale(1); }
    50%  { transform: translate(40px, -30px) scale(1.12); }
    100% { transform: translate(-30px, 40px) scale(0.95); }
}
@keyframes grainDrift {
    0%   { transform: translate(0, 0); }
    100% { transform: translate(46px, 46px); }
}

/* ---------- Hero interactive layer ---------- */
.hero { overflow: hidden; }

/* Aurora WebGL layer (react-bits port) — glow only, text stays readable */
.aurora-layer {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    opacity: 0.65;
    mix-blend-mode: screen;
    -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 55%, transparent 100%);
    mask-image: linear-gradient(to bottom, #000 0%, #000 55%, transparent 100%);
}
.hero-particles {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}
/* Cursor-follow ember glow */
.hero-cursor-glow {
    position: absolute;
    width: 340px;
    height: 340px;
    border-radius: 50%;
    left: 0; top: 0;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, var(--fx-glow), transparent 65%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
    pointer-events: none;
    mix-blend-mode: screen;
}
.hero:hover .hero-cursor-glow { opacity: 0.9; }
.hero-content { z-index: 2 !important; }
.hero-overlay { z-index: 0; }

/* Rising steam wisps in hero */
.hero-steam {
    position: absolute;
    bottom: -40px;
    width: 60px;
    height: 180px;
    background: radial-gradient(closest-side, rgba(255, 255, 255, 0.14), transparent 70%);
    filter: blur(10px);
    border-radius: 50%;
    animation: steamRise 7s ease-in infinite;
    z-index: 0;
    pointer-events: none;
}
.hero-steam.s1 { left: 18%; animation-delay: 0s; }
.hero-steam.s2 { left: 46%; animation-delay: 2.4s; }
.hero-steam.s3 { left: 74%; animation-delay: 4.1s; }
@keyframes steamRise {
    0%   { transform: translateY(0) scaleX(1); opacity: 0; }
    20%  { opacity: 0.7; }
    100% { transform: translateY(-320px) scaleX(1.8); opacity: 0; }
}

/* Animated flame underline on the hero badge */
.hero-badge {
    position: relative;
    background: linear-gradient(135deg, rgba(255, 140, 0, 0.18), rgba(230, 57, 70, 0.18)) !important;
    border-color: rgba(255, 140, 0, 0.35) !important;
    box-shadow: 0 0 22px rgba(255, 140, 0, 0.25);
    animation: badgePulse 3.4s ease-in-out infinite;
}
@keyframes badgePulse {
    0%, 100% { box-shadow: 0 0 18px rgba(255, 140, 0, 0.18); }
    50%      { box-shadow: 0 0 30px rgba(255, 140, 0, 0.4); }
}

/* ---------- Button shine ---------- */
.btn-primary { position: relative; overflow: hidden; }
.btn-primary::after {
    content: '';
    position: absolute;
    top: 0; left: -120%;
    width: 60%; height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.45), transparent);
    transform: skewX(-20deg);
    transition: none;
}
.btn-primary:hover::after { animation: btnShine 0.85s ease; }
@keyframes btnShine {
    0%   { left: -120%; }
    100% { left: 130%; }
}

/* ---------- Menu card polish ---------- */
.menu-item-card {
    position: relative;
    overflow: hidden;
    transition: transform 0.28s cubic-bezier(.2,.8,.2,1), border-color 0.28s ease, box-shadow 0.28s ease;
}
.menu-item-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 0%), rgba(255, 140, 0, 0.14), transparent 60%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}
.menu-item-card:hover {
    transform: translateY(-5px) scale(1.008);
    border-color: rgba(255, 140, 0, 0.45) !important;
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 140, 0, 0.12);
}
.menu-item-card:hover::before { opacity: 1; }
.item-thumb { overflow: hidden; border-radius: 16px; }
.item-thumb img { transition: transform 0.45s cubic-bezier(.2,.8,.2,1); }
.menu-item-card:hover .item-thumb img { transform: scale(1.09) rotate(-1deg); }

/* Menu tab active glow */
.menu-tab.active {
    box-shadow: 0 8px 22px rgba(230, 57, 70, 0.35);
}

/* ---------- Scroll reveal ---------- */
.fx-reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(.2,.8,.2,1);
    will-change: opacity, transform;
}
.fx-reveal.in-view { opacity: 1; transform: none; }

/* ---------- Value change bump (cart badge / totals) ---------- */
.fx-bump { animation: fxBump 0.42s cubic-bezier(.2,.9,.3,1.4); }
@keyframes fxBump {
    0%   { transform: scale(1); }
    40%  { transform: scale(1.28); color: var(--fx-ember); }
    100% { transform: scale(1); }
}

/* ============================================================
   Transactions / checkout enhancements
   ============================================================ */
.checkout-card {
    position: relative;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.checkout-card:hover { box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4); }

/* Order-mode cards: richer active state + icon */
.mode-card {
    position: relative;
    overflow: hidden;
    transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}
.mode-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 140, 0, 0.14), rgba(230, 57, 70, 0.14));
    opacity: 0;
    transition: opacity 0.25s ease;
}
.mode-card:hover { transform: translateY(-3px); }
.mode-card.active {
    border-color: var(--fx-ember) !important;
    box-shadow: 0 10px 26px rgba(255, 140, 0, 0.28);
}
.mode-card.active::before { opacity: 1; }
.mode-card > * { position: relative; z-index: 1; }

/* Summary rows: clearer hierarchy + animated total */
.summary-row { transition: color 0.2s ease; }
.summary-row.total {
    margin-top: 10px;
    padding-top: 14px;
    border-top: 1px dashed rgba(255, 255, 255, 0.16);
    font-size: 1.15rem;
}
.summary-row.total strong {
    background: linear-gradient(135deg, var(--fx-ember), var(--fx-red));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.35rem;
}

/* Order progress strip on checkout */
.fx-steps {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 22px;
    flex-wrap: wrap;
}
.fx-step {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-light);
}
.fx-step .fx-step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px; height: 22px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--fx-ember), var(--fx-red));
    color: #fff;
    font-size: 0.78rem;
}
.fx-step.done { color: var(--white); border-color: rgba(255, 140, 0, 0.4); }
.fx-step-divider { flex: 1; height: 2px; min-width: 16px;
    background: linear-gradient(90deg, rgba(255,140,0,0.4), rgba(255,255,255,0.06)); border-radius: 2px; }

/* Sticky summary on wide screens */
@media (min-width: 900px) {
    .checkout-shell .checkout-card:last-child {
        position: sticky;
        top: 96px;
    }
}

/* ---------- Accessibility: respect reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    .resto-blob, .resto-grain, .hero-steam, .hero-badge,
    .btn-primary::after, .fx-bump, .hero-particles { animation: none !important; }
    .fx-reveal { opacity: 1; transform: none; transition: none; }
}