:root {
    --black: #0a0a0a;
    --white: #f5f5f0;
    --red: #e81c1c;
    --red-dark: #b01010;
    --red-glow: rgba(232,28,28,0.15);
    --grey: #1a1a1a;
    --grey-mid: #2e2e2e;
    --grey-light: #888;
    --grey-border: #222;
    --gold: #f5c842;
    --gold-glow: rgba(245,200,66,0.15);
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --font-mono: 'Space Mono', monospace;
    --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
    --nav-h: 70px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); background: var(--black); color: var(--white); overflow-x: hidden; cursor: none; min-height: 100vh; }

/* CURSOR */
#cursor { width:12px; height:12px; background:var(--gold); border-radius:50%; position:fixed; top:0; left:0; pointer-events:none; z-index:9999; transform:translate(-50%,-50%); transition:width .2s,height .2s; }
#cursor-ring { width:36px; height:36px; border:1px solid rgba(245,200,66,0.5); border-radius:50%; position:fixed; top:0; left:0; pointer-events:none; z-index:9998; transform:translate(-50%,-50%); transition:width .2s,height .2s; }
body.hovering #cursor { width:8px; height:8px; background:var(--white); }
body.hovering #cursor-ring { width:52px; height:52px; border-color:var(--gold); }
::-webkit-scrollbar { width:3px; }
::-webkit-scrollbar-track { background:var(--black); }
::-webkit-scrollbar-thumb { background:var(--gold); }

/* NAV */
nav {
    position:fixed; top:0; left:0; right:0; z-index:1000;
    padding:0 40px; height:var(--nav-h);
    display:flex; align-items:center; justify-content:space-between;
    background:rgba(10,10,10,0.95); backdrop-filter:blur(20px);
    border-bottom:1px solid var(--grey-border);
}
.nav-logo { font-family:var(--font-display); font-size:28px; letter-spacing:3px; color:var(--white); text-decoration:none; cursor:none; }
.nav-logo span { color:var(--red); }
.nav-back { font-family:var(--font-mono); font-size:11px; letter-spacing:2px; text-transform:uppercase; color:var(--grey-light); text-decoration:none; cursor:none; display:flex; align-items:center; gap:8px; transition:color var(--transition); }
.nav-back:hover { color:var(--gold); }

/* PAGE LAYOUT */
.spin-page {
    min-height: 100vh;
    padding: calc(var(--nav-h) + 40px) 40px 80px;
    display: grid;
    grid-template-columns: 1fr 480px 1fr;
    grid-template-rows: auto 1fr;
    gap: 0 48px;
    align-items: start;
    position: relative;
    overflow: hidden;
}

/* BG EFFECTS */
.bg-radial {
    position: fixed; inset: 0; pointer-events: none; z-index: 0;
    background:
            radial-gradient(ellipse 50% 70% at 50% 50%, rgba(245,200,66,0.04) 0%, transparent 60%),
            radial-gradient(ellipse 30% 40% at 20% 80%, rgba(232,28,28,0.04) 0%, transparent 50%),
            radial-gradient(ellipse 30% 40% at 80% 20%, rgba(232,28,28,0.04) 0%, transparent 50%);
}
.bg-grid {
    position: fixed; inset: 0; pointer-events: none; z-index: 0;
    background-image: linear-gradient(rgba(255,255,255,0.012) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.012) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 80% at center, black 20%, transparent 100%);
}

/* HEADER */
.spin-header {
    grid-column: 1 / -1;
    text-align: center;
    margin-bottom: 40px;
    position: relative; z-index: 2;
}
.spin-eyebrow {
    font-family: var(--font-mono); font-size: 11px; letter-spacing: 4px;
    text-transform: uppercase; color: var(--gold);
    margin-bottom: 12px;
    display: flex; align-items: center; justify-content: center; gap: 12px;
    animation: fadeUp 0.6s 0.2s both;
}
.spin-eyebrow::before, .spin-eyebrow::after { content:''; width:32px; height:1px; background:var(--gold); }
.spin-title {
    font-family: var(--font-display);
    font-size: clamp(56px, 8vw, 100px);
    letter-spacing: 4px; line-height: 0.9;
    background: linear-gradient(135deg, var(--white) 30%, var(--gold) 60%, var(--white) 90%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeUp 0.6s 0.4s both;
}

/* LEFT PANEL */
.spin-left {
    grid-column: 1;
    position: relative; z-index: 2;
    padding-top: 40px;
}
.prize-legend { display: flex; flex-direction: column; gap: 10px; }
.prize-item {
    display: flex; align-items: center; gap: 14px;
    padding: 14px 18px;
    background: var(--grey);
    border: 1px solid var(--grey-border);
    transition: var(--transition);
    cursor: none;
}
.prize-item:hover { border-color: var(--gold); transform: translateX(4px); }
.prize-dot { width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0; }
.prize-label { font-size: 13px; color: var(--grey-light); flex: 1; }
.prize-label strong { color: var(--white); display: block; font-size: 14px; }

/* CENTER - WHEEL */
.spin-center {
    grid-column: 2;
    display: flex; flex-direction: column; align-items: center; gap: 24px;
    position: relative; z-index: 2;
}

.wheel-wrap {
    position: relative;
    width: 460px; height: 460px;
    flex-shrink: 0;
}

/* Glow ring ngoài */
.wheel-glow {
    position: absolute; inset: -16px;
    border-radius: 50%;
    background: conic-gradient(
            rgba(245,200,66,0.15), rgba(232,28,28,0.1),
            rgba(245,200,66,0.15), rgba(232,28,28,0.1),
            rgba(245,200,66,0.15)
    );
    animation: rotateSlow 8s linear infinite;
    filter: blur(8px);
}

/* Pointer/mũi tên */
.wheel-pointer {
    position: absolute;
    top: -18px;   /* ← đẩy sát vào vành */
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    filter: drop-shadow(0 0 8px rgba(245,200,66,0.8));
}

/* Canvas wheel */
#wheelCanvas {
    position: absolute; inset: 0;
    border-radius: 50%;
    cursor: none;
}

/* Outer ring decoration */
.wheel-outer-ring {
    position: absolute; inset: -6px;
    border-radius: 50%;
    border: 3px solid var(--gold);
    box-shadow: 0 0 20px rgba(245,200,66,0.3), inset 0 0 20px rgba(245,200,66,0.05);
    pointer-events: none;
}

/* Outer dots */
.wheel-outer-ring::before {
    content: '';
    position: absolute; inset: 4px;
    border-radius: 50%;
    border: 1px dashed rgba(245,200,66,0.2);
}

/* Center button */
.wheel-center {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 110px; height: 110px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 35%, #2a2a2a, var(--black));
    border: 3px solid var(--gold);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    cursor: none;
    z-index: 10;
    box-shadow: 0 0 24px rgba(245,200,66,0.4), inset 0 0 16px rgba(0,0,0,0.6);
    transition: transform 0.2s, box-shadow 0.2s;
    user-select: none;
}
.wheel-center:hover {
    transform: translate(-50%, -50%) scale(1.06);
    box-shadow: 0 0 40px rgba(245,200,66,0.6), inset 0 0 16px rgba(0,0,0,0.6);
}
.wheel-center:active { transform: translate(-50%, -50%) scale(0.97); }
.wheel-center-spins {
    font-family: var(--font-display); font-size: 28px;
    color: var(--gold); line-height: 1;
}
.wheel-center-label {
    font-family: var(--font-mono); font-size: 9px;
    letter-spacing: 2px; color: var(--white);
    text-transform: uppercase; margin-top: 2px;
}
.wheel-center-sub {
    font-family: var(--font-mono); font-size: 8px;
    color: var(--grey-light); letter-spacing: 1px;
    margin-top: 1px;
}

/* Help button */
.help-btn {
    position: absolute; top: -8px; right: -8px;
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--grey-mid); border: 1.5px solid var(--grey-border);
    color: var(--grey-light);
    font-family: var(--font-display); font-size: 18px;
    display: flex; align-items: center; justify-content: center;
    cursor: none; transition: var(--transition); z-index: 20;
}
.help-btn:hover { border-color: var(--gold); color: var(--gold); box-shadow: 0 0 12px rgba(245,200,66,0.3); }

/* Spin info */
.spin-info-bar {
    display: flex; gap: 2px; width: 100%;
}
.spin-info-item {
    flex: 1; padding: 16px; background: var(--grey);
    border: 1px solid var(--grey-border); text-align: center;
}
.spin-info-num { font-family: var(--font-display); font-size: 28px; color: var(--gold); }
.spin-info-label { font-family: var(--font-mono); font-size: 9px; letter-spacing: 2px; color: var(--grey-light); text-transform: uppercase; margin-top: 3px; }

/* RIGHT PANEL */
.spin-right {
    grid-column: 3;
    position: relative; z-index: 2;
    padding-top: 40px;
}
.history-title {
    font-family: var(--font-display); font-size: 24px; letter-spacing: 2px;
    margin-bottom: 20px;
    display: flex; align-items: center; gap: 10px;
}
.history-title::after { content:''; flex:1; height:1px; background:var(--grey-border); }
.history-list { display: flex; flex-direction: column; gap: 8px; max-height: 400px; overflow-y: auto; }
.history-item {
    display: flex; align-items: center; gap: 14px;
    padding: 14px 16px; background: var(--grey);
    border: 1px solid var(--grey-border);
    animation: slideIn 0.4s ease;
}
.history-prize-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.history-prize-name { font-size: 13px; color: var(--white); flex: 1; }
.history-time { font-family: var(--font-mono); font-size: 10px; color: var(--grey-light); }
.history-empty {
    text-align: center; padding: 32px 16px;
    font-family: var(--font-mono); font-size: 11px;
    letter-spacing: 2px; color: var(--grey-light);
}

/* RESULT OVERLAY */
.result-overlay {
    position: fixed; inset: 0; z-index: 2000;
    background: rgba(0,0,0,0.85);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none;
    transition: opacity 0.4s ease;
    backdrop-filter: blur(8px);
}
.result-overlay.show { opacity: 1; pointer-events: all; }
.result-card {
    background: var(--grey);
    border: 1px solid var(--grey-border);
    padding: 48px 40px;
    max-width: 440px; width: 90%;
    text-align: center;
    transform: scale(0.8) translateY(20px);
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
}
.result-overlay.show .result-card { transform: scale(1) translateY(0); }
.result-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.result-emoji { font-size: 56px; margin-bottom: 16px; animation: bounceIn 0.6s 0.3s both; }
.result-label {
    font-family: var(--font-mono); font-size: 10px; letter-spacing: 4px;
    text-transform: uppercase; color: var(--gold); margin-bottom: 8px;
}
.result-prize {
    font-family: var(--font-display); font-size: clamp(28px, 5vw, 44px);
    letter-spacing: 2px; line-height: 1.1; margin-bottom: 16px;
}
.result-desc { font-size: 14px; color: var(--grey-light); line-height: 1.7; margin-bottom: 32px; }
.result-close {
    padding: 14px 48px;
    background: var(--gold); color: var(--black);
    font-family: var(--font-mono); font-size: 11px;
    letter-spacing: 3px; text-transform: uppercase;
    border: none; cursor: none; transition: var(--transition);
    clip-path: polygon(8px 0%,100% 0%,calc(100% - 8px) 100%,0% 100%);
}
.result-close:hover { background: var(--white); }

/* CONFETTI */
.confetti-piece {
    position: fixed; width: 8px; height: 8px;
    border-radius: 2px; pointer-events: none; z-index: 2001;
    animation: confettiFall var(--dur) var(--delay) both;
}
@keyframes confettiFall {
    0% { transform: translateY(-20px) rotate(0deg); opacity: 1; }
    100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

/* MODAL */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.8);
    z-index: 3000; display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none; transition: opacity var(--transition);
    backdrop-filter: blur(4px);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
    background: var(--grey); border: 1px solid var(--grey-border);
    padding: 40px; width: 480px; max-width: 92vw; max-height: 85vh; overflow-y: auto;
    transform: translateY(20px); transition: transform var(--transition);
    position: relative;
}
.modal-overlay.open .modal { transform: translateY(0); }
.modal-close {
    position: absolute; top: 16px; right: 16px;
    width: 32px; height: 32px; background: none; border: 1px solid var(--grey-border);
    color: var(--grey-light); font-size: 16px; cursor: none; transition: var(--transition);
}
.modal-close:hover { border-color: var(--gold); color: var(--gold); }

/* TOAST */
.toast {
    position: fixed; bottom: 32px; right: 32px; z-index: 9998;
    background: var(--grey); border-left: 3px solid var(--gold);
    padding: 14px 22px; display: flex; align-items: center; gap: 10px;
    transform: translateX(120%); transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
    min-width: 260px; box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    font-size: 13px;
}
.toast.show { transform: translateX(0); }

/* ANIMATIONS */
@keyframes fadeUp { from{opacity:0;transform:translateY(24px);} to{opacity:1;transform:none;} }
@keyframes slideIn { from{opacity:0;transform:translateX(20px);} to{opacity:1;transform:none;} }
@keyframes bounceIn { 0%{transform:scale(0.3);opacity:0;} 60%{transform:scale(1.1);} 100%{transform:scale(1);opacity:1;} }
@keyframes rotateSlow { to{transform:rotate(360deg);} }
@keyframes pulse { 0%,100%{box-shadow:0 0 24px rgba(245,200,66,0.4);} 50%{box-shadow:0 0 48px rgba(245,200,66,0.7);} }
@keyframes shimmer {
    0%{background-position:-200% center;}
    100%{background-position:200% center;}
}

.wheel-center { animation: pulse 2.5s ease-in-out infinite; }

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */

/* Canvas co theo khung vòng quay (áp dụng mọi kích thước) */
#wheelCanvas { width: 100%; height: 100%; }

/* ── Thiết bị cảm ứng: bỏ cursor tuỳ chỉnh ── */
@media (hover: none), (pointer: coarse) {
    * { cursor: auto !important; }
    #cursor, #cursor-ring { display: none !important; }
    .prize-item:hover { transform: none; }
}

/* ── Tablet & mobile ≤ 1100px ── */
@media (max-width: 1100px) {
    .spin-page {
        grid-template-columns: minmax(0, 1fr);
        grid-template-rows: auto;
        gap: 32px 0;
        padding: calc(var(--nav-h) + 32px) 24px 64px;
    }
    .spin-header { margin-bottom: 8px; }

    /* Vòng quay lên trước, rồi tới phần thưởng và lịch sử */
    .spin-center { grid-column: 1; order: 1; width: 100%; }
    .spin-left   { grid-column: 1; order: 2; padding-top: 0; }
    .spin-right  { grid-column: 1; order: 3; padding-top: 0; }

    .wheel-wrap {
        width: min(420px, calc(100vw - 80px));
        height: auto;
        aspect-ratio: 1;
    }
    .spin-info-bar { max-width: 420px; }

    .prize-legend { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .history-list { max-height: 320px; }
}

/* ── Mobile ≤ 600px ── */
@media (max-width: 600px) {
    :root { --nav-h: 60px; }
    nav { padding: 0 16px; }
    .nav-logo { font-size: 24px; }

    .spin-page {
        padding: calc(var(--nav-h) + 24px) 16px 56px;
        gap: 28px 0;
    }
    .spin-eyebrow { font-size: 10px; letter-spacing: 3px; }
    .spin-eyebrow::before,
    .spin-eyebrow::after { width: 20px; }
    .spin-title { letter-spacing: 2px; }

    /* Vòng quay */
    .wheel-wrap { width: min(340px, calc(100vw - 64px)); }
    .wheel-center { width: 84px; height: 84px; border-width: 2px; }
    .wheel-center-spins { font-size: 22px; }
    .wheel-center-label { font-size: 8px; letter-spacing: 1px; }
    .wheel-center-sub { font-size: 7px; }
    .help-btn { width: 32px; height: 32px; font-size: 16px; top: -12px; right: -12px; }

    /* Thống kê */
    .spin-info-bar { max-width: none; }
    .spin-info-item { padding: 12px 6px; }
    .spin-info-num { font-size: 24px; }
    .spin-info-label { font-size: 8px; letter-spacing: 1px; }

    /* Danh sách */
    .prize-legend { grid-template-columns: 1fr; }
    .prize-item { padding: 12px 14px; }
    .history-list { max-height: 260px; }

    /* Modal hướng dẫn, kết quả, toast */
    .modal {
        padding: 28px 18px;
        width: 100%;
        max-width: calc(100vw - 24px);
        max-height: 90vh;
    }
    .result-card { padding: 36px 24px; }
    .result-emoji { font-size: 48px; }
    .toast { left: 16px; right: 16px; bottom: 16px; min-width: 0; }
}