/* =========================================================
   BASKETBALL DUEL - STYLESHEET
   Neon Arena Glassmorphism - 2 Player Local Versus
   ========================================================= */

:root {
    --font-display: 'Baloo 2', 'Nunito', system-ui, sans-serif;
    --font-main: 'Nunito', system-ui, sans-serif;

    --bg-dark: #070914;
    --card-bg: rgba(15, 23, 42, 0.78);
    --card-border: rgba(255, 255, 255, 0.12);

    --neon-blue: #00f0ff;
    --neon-pink: #ff007f;
    --neon-purple: #9d4edd;
    --neon-green: #39ff14;
    --neon-yellow: #ffd700;
    --neon-orange: #ff7a1a;
    --neon-red: #ff3366;

    --p1: #ff8a1a;
    --p2: #00d0ff;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: #fff;
    min-height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

/* Animated arena background */
.bg-court-glow {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(circle at 12% 25%, rgba(255, 138, 26, 0.22), transparent 45%),
        radial-gradient(circle at 88% 25%, rgba(0, 208, 255, 0.22), transparent 45%),
        radial-gradient(circle at 50% 110%, rgba(157, 78, 221, 0.18), transparent 55%),
        linear-gradient(160deg, #050714 0%, #0d1226 60%, #131a33 100%);
    background-size: 180% 180%;
    animation: arenaPulse 16s ease-in-out infinite alternate;
}

@keyframes arenaPulse {
    0%   { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.app-wrapper {
    width: 100%;
    max-width: 1320px;
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 12px 16px 16px;
    gap: 12px;
}

/* ---------------- Navigation ---------------- */
.unified-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 10px 18px;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
    flex-shrink: 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 0 10px rgba(255, 138, 26, 0.7));
    animation: spinBall 6s linear infinite;
    display: inline-block;
}

@keyframes spinBall {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.brand-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
    background: linear-gradient(135deg, var(--p1), var(--neon-yellow), var(--p2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.btn {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 700;
    padding: 9px 16px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.07);
    color: #e2e8f0;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn:hover {
    background: rgba(255, 255, 255, 0.14);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.35);
}

.btn-home {
    background: linear-gradient(135deg, rgba(157, 78, 221, 0.35), rgba(0, 240, 255, 0.25));
    border-color: rgba(157, 78, 221, 0.5);
    color: #fff;
}

.btn-toggle.active {
    background: linear-gradient(135deg, rgba(57, 255, 20, 0.22), rgba(0, 240, 255, 0.18));
    border-color: rgba(57, 255, 20, 0.55);
    color: #b9ffb0;
    box-shadow: 0 0 16px rgba(57, 255, 20, 0.25);
}

.btn.muted {
    opacity: 0.55;
}

/* ---------------- Game Viewport ---------------- */
.game-viewport {
    position: relative;
    flex: 1;
    min-height: 0;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid var(--card-border);
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.6), inset 0 0 60px rgba(0, 0, 0, 0.5);
    background: #0a0e1c;
    display: flex;
    align-items: center;
    justify-content: center;
}

#game-canvas {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
}

/* ---------------- HUD ---------------- */
.hud-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 14px;
}

.hud-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
}

/* Hai dải bảng điểm hai bên, đồng hồ nằm chính giữa */
.score-strip {
    flex: 1;
    display: flex;
    gap: 8px;
    min-width: 0;
}

.score-strip.right { justify-content: flex-end; }

.score-strip .score-card {
    flex: 1 1 0;
    min-width: 0;
    max-width: 260px;
}

/* Thẻ bên phải soi gương lại cho cân với thẻ bên trái */
.score-card.flip { flex-direction: row-reverse; }
.score-card.flip .score-info { text-align: right; }
.score-card.flip .score-sub { justify-content: flex-end; }

.key-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 800;
    background: rgba(255, 255, 255, 0.16);
    border-radius: 6px;
    padding: 0 6px;
    margin-left: 4px;
    vertical-align: 1px;
}

.card-p3 { border-color: rgba(57, 211, 83, 0.5); box-shadow: 0 0 22px rgba(57, 211, 83, 0.22); }
.card-p4 { border-color: rgba(199, 125, 255, 0.5); box-shadow: 0 0 22px rgba(199, 125, 255, 0.22); }
.card-p3.pop { transform: scale(1.06); box-shadow: 0 0 38px rgba(57, 211, 83, 0.65); }
.card-p4.pop { transform: scale(1.06); box-shadow: 0 0 38px rgba(199, 125, 255, 0.65); }
.card-p3 .score-number { color: #39d353; text-shadow: 0 0 18px rgba(57, 211, 83, 0.7); }
.card-p4 .score-number { color: #c77dff; text-shadow: 0 0 18px rgba(199, 125, 255, 0.7); }

.control-hint {
    margin: 0 auto;
    background: rgba(6, 10, 24, 0.68);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 6px 18px;
    font-size: 0.85rem;
    font-weight: 700;
    color: #cbd5e1;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    text-align: center;
}

.keys-note {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 11px 15px;
    font-size: 0.88rem;
    line-height: 1.8;
    color: #cbd5e1;
    margin-bottom: 16px;
}

.score-card {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(6, 10, 24, 0.72);
    border: 1px solid var(--card-border);
    border-radius: 18px;
    padding: 8px 16px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    min-width: 230px;
    transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.card-p1 { border-color: rgba(255, 138, 26, 0.5); box-shadow: 0 0 22px rgba(255, 138, 26, 0.22); }
.card-p2 { border-color: rgba(0, 208, 255, 0.5); box-shadow: 0 0 22px rgba(0, 208, 255, 0.22); }

.card-p1.pop { transform: scale(1.06); box-shadow: 0 0 38px rgba(255, 138, 26, 0.65); }
.card-p2.pop { transform: scale(1.06); box-shadow: 0 0 38px rgba(0, 208, 255, 0.65); }

.score-avatar {
    font-size: 1.9rem;
    line-height: 1;
    filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.6));
}

.score-info { flex: 1; }
.align-right { text-align: right; }

.score-name {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: 0.6px;
    color: #f1f5f9;
}

.score-sub {
    display: flex;
    gap: 6px;
    margin-top: 3px;
}

.align-right .score-sub { justify-content: flex-end; }

.streak-tag {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.09);
    color: #cbd5e1;
}

.streak-tag.fire {
    background: rgba(255, 122, 26, 0.25);
    color: #ffca8a;
    box-shadow: 0 0 12px rgba(255, 122, 26, 0.5);
}

.score-number {
    font-family: var(--font-display);
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1;
    min-width: 62px;
    text-align: center;
}

.card-p1 .score-number { color: var(--p1); text-shadow: 0 0 18px rgba(255, 138, 26, 0.7); }
.card-p2 .score-number { color: var(--p2); text-shadow: 0 0 18px rgba(0, 208, 255, 0.7); }

.clock-box {
    background: rgba(6, 10, 24, 0.78);
    border: 1px solid rgba(255, 215, 0, 0.4);
    border-radius: 18px;
    padding: 6px 22px;
    text-align: center;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 0 22px rgba(255, 215, 0, 0.18);
}

.clock-label {
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: #94a3b8;
}

.clock-time {
    font-family: var(--font-display);
    font-size: 2.1rem;
    font-weight: 800;
    line-height: 1.05;
    color: var(--neon-yellow);
    text-shadow: 0 0 16px rgba(255, 215, 0, 0.6);
    font-variant-numeric: tabular-nums;
}

.clock-time.urgent {
    color: #ff5566;
    text-shadow: 0 0 18px rgba(255, 60, 90, 0.8);
    animation: clockBeat 0.6s ease-in-out infinite;
}

@keyframes clockBeat {
    0%, 100% { transform: scale(1); }
    50%      { transform: scale(1.14); }
}

.hud-bottom {
    display: flex;
    justify-content: space-between;
    gap: 12px;
}

.key-hint {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(6, 10, 24, 0.6);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 6px 14px;
    font-size: 0.85rem;
    font-weight: 700;
    color: #cbd5e1;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.hint-p1 { border-color: rgba(255, 138, 26, 0.35); }
.hint-p2 { border-color: rgba(0, 208, 255, 0.35); }

.key-cap {
    font-family: var(--font-display);
    font-weight: 800;
    background: linear-gradient(180deg, #f8fafc, #cbd5e1);
    color: #0b1020;
    border-radius: 8px;
    padding: 2px 12px;
    box-shadow: 0 3px 0 rgba(0, 0, 0, 0.45);
    font-size: 1rem;
}

.key-cap.big {
    font-size: 1.8rem;
    padding: 6px 26px;
    box-shadow: 0 5px 0 rgba(0, 0, 0, 0.5);
}

/* ---------------- Screens / Overlays ---------------- */
.screen {
    position: absolute;
    inset: 0;
    background: rgba(4, 7, 18, 0.86);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 20;
    overflow-y: auto;
}

.screen.hidden { display: none; }

.panel {
    width: 100%;
    max-width: 780px;
    background: rgba(13, 19, 38, 0.9);
    border: 1px solid var(--card-border);
    border-radius: 26px;
    padding: 26px 30px 30px;
    text-align: center;
    box-shadow: 0 20px 70px rgba(0, 0, 0, 0.65);
    animation: panelIn 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.28);
}

.panel-small { max-width: 420px; }

@keyframes panelIn {
    from { opacity: 0; transform: translateY(24px) scale(0.95); }
    to   { opacity: 1; transform: none; }
}

.panel-emoji {
    font-size: 3rem;
    margin-bottom: 6px;
    filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.6));
}

.panel-title {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: 1px;
    background: linear-gradient(135deg, var(--p1), var(--neon-yellow), var(--p2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 6px;
}

.panel-desc {
    color: #cbd5e1;
    font-size: 1rem;
    line-height: 1.55;
    margin-bottom: 18px;
}

/* ---- Khối chọn chế độ / độ khó / cách ngắm ---- */
.setup-block {
    margin-bottom: 14px;
}

.setup-label {
    font-family: var(--font-display);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 1.4px;
    color: #94a3b8;
    text-align: left;
    margin-bottom: 7px;
    display: flex;
    align-items: center;
    gap: 7px;
}

.setup-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.opt-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.setup-grid .opt-row.small {
    grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
}

.opt {
    font-family: var(--font-main);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    padding: 10px 9px;
    cursor: pointer;
    color: #cbd5e1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    text-align: center;
    transition: all 0.2s ease;
}

.opt:hover {
    background: rgba(255, 255, 255, 0.11);
    transform: translateY(-2px);
}

.opt.sel {
    background: linear-gradient(135deg, rgba(255, 138, 26, 0.24), rgba(255, 215, 0, 0.16));
    border-color: var(--p1);
    color: #fff;
    box-shadow: 0 0 20px rgba(255, 138, 26, 0.35);
}

.opt-icon { font-size: 1.5rem; line-height: 1; }

/* Mức siêu khó nổi bật hơn */
.opt-insane { border-color: rgba(255, 51, 102, 0.5); }
.opt-insane .opt-name { color: #ff8095; }
.opt-insane.sel {
    background: linear-gradient(135deg, rgba(255, 51, 102, 0.3), rgba(255, 138, 26, 0.18));
    border-color: #ff3366;
    box-shadow: 0 0 22px rgba(255, 51, 102, 0.45);
}
.opt-insane.sel .opt-name { color: #fff; }

.opt-name {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 0.95rem;
    letter-spacing: 0.4px;
}

.opt-desc {
    font-size: 0.72rem;
    color: #94a3b8;
    line-height: 1.35;
}

.opt.sel .opt-desc { color: #e6d3b8; }

.rules-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 14px;
    margin: 16px 0 18px;
}

.rule-box {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 14px 12px;
}

.rule-p1 { border-color: rgba(255, 138, 26, 0.5); box-shadow: inset 0 0 30px rgba(255, 138, 26, 0.12); }
.rule-p2 { border-color: rgba(0, 208, 255, 0.5); box-shadow: inset 0 0 30px rgba(0, 208, 255, 0.12); }

.rule-avatar { font-size: 2.3rem; }

.rule-name {
    font-family: var(--font-display);
    font-weight: 800;
    letter-spacing: 0.5px;
    margin: 4px 0 10px;
}

.rule-note {
    font-size: 0.82rem;
    color: #94a3b8;
    margin-top: 10px;
}

.vs-badge {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--neon-yellow);
    text-shadow: 0 0 16px rgba(255, 215, 0, 0.6);
}

.howto {
    display: flex;
    flex-direction: column;
    gap: 7px;
    margin-bottom: 16px;
    text-align: left;
}

.howto-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 8px 14px;
    font-size: 0.95rem;
    color: #e2e8f0;
}

.step {
    font-family: var(--font-display);
    font-weight: 800;
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--p1), var(--neon-yellow));
    color: #0b1020;
    display: grid;
    place-items: center;
    font-size: 0.85rem;
}

.point-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
}

.pt {
    font-size: 0.8rem;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.07);
    color: #e2e8f0;
}

.pt-2 { border: 1px solid rgba(0, 208, 255, 0.45); color: #9fe8ff; }
.pt-3 { border: 1px solid rgba(157, 78, 221, 0.5); color: #d9b3ff; }
.pt-s { border: 1px solid rgba(57, 255, 20, 0.45); color: #b9ffb0; }
.pt-f { border: 1px solid rgba(255, 122, 26, 0.5); color: #ffca8a; }

.big-btn {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: 0.6px;
    padding: 14px 40px;
    border-radius: 18px;
    border: none;
    cursor: pointer;
    background: linear-gradient(135deg, var(--p1), var(--neon-yellow));
    color: #16100a;
    box-shadow: 0 8px 26px rgba(255, 138, 26, 0.45);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    transition: all 0.22s ease;
}

.big-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 34px rgba(255, 138, 26, 0.7);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.08);
    color: #e2e8f0;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: none;
}

.btn-ghost:hover { box-shadow: 0 10px 26px rgba(0, 0, 0, 0.5); }

/* Game over */
.final-grid {
    display: grid;
    gap: 12px;
    margin-bottom: 20px;
}

.final-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.final-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.final-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.final-p3 { border-color: rgba(57, 211, 83, 0.45); }
.final-p4 { border-color: rgba(199, 125, 255, 0.45); }
.final-p3 .final-score { color: #39d353; }
.final-p4 .final-score { color: #c77dff; }

.final-box {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 14px;
}

.final-p1 { border-color: rgba(255, 138, 26, 0.45); }
.final-p2 { border-color: rgba(0, 208, 255, 0.45); }

.final-box.winner {
    box-shadow: 0 0 34px rgba(255, 215, 0, 0.45);
    border-color: var(--neon-yellow);
    background: rgba(255, 215, 0, 0.08);
}

.final-avatar { font-size: 2rem; }

.final-name {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 0.95rem;
    color: #e2e8f0;
}

.final-score {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.1;
}

.final-p1 .final-score { color: var(--p1); }
.final-p2 .final-score { color: var(--p2); }

.final-stats {
    display: grid;
    gap: 4px;
    margin-top: 8px;
    font-size: 0.85rem;
}

.final-stats div {
    display: flex;
    justify-content: space-between;
    color: #94a3b8;
    padding: 3px 6px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.04);
}

.final-stats b { color: #f1f5f9; }

.over-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 900px) {
    .brand-title { font-size: 1.15rem; }
    .btn span { display: none; }
    .btn { padding: 9px 13px; }
    .btn-home span { display: none; }
    .score-card { min-width: 0; padding: 6px 10px; gap: 8px; }
    .score-name { font-size: 0.75rem; }
    .score-number { font-size: 1.9rem; min-width: 44px; }
    .score-avatar { font-size: 1.4rem; }
    .streak-tag { font-size: 0.62rem; padding: 1px 6px; }
    .clock-time { font-size: 1.5rem; }
    .clock-box { padding: 5px 12px; }
    .key-hint { font-size: 0.72rem; padding: 5px 10px; }
    .panel { padding: 20px 18px 24px; }
    .panel-title { font-size: 1.6rem; }
    .rules-grid { grid-template-columns: 1fr; }
    .vs-badge { padding: 2px 0; }
    .final-grid { grid-template-columns: 1fr; }
    .setup-grid { grid-template-columns: 1fr; }
    .opt-row { grid-template-columns: 1fr; }
    .opt { flex-direction: row; justify-content: flex-start; gap: 9px; text-align: left; }
    .opt-desc { flex: 1; }
}

@media (max-width: 900px) {
    .final-grid.cols-3, .final-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
    .control-hint { font-size: 0.72rem; padding: 5px 10px; }
}

@media (max-width: 560px) {
    .app-wrapper { padding: 8px 8px 10px; }
    .unified-nav { padding: 8px 10px; border-radius: 16px; }
    .hud-overlay { padding: 8px; }
    .score-sub { display: none; }
    .score-strip { gap: 4px; }
    .score-card { padding: 5px 7px; gap: 5px; }
    .final-grid.cols-3, .final-grid.cols-4 { grid-template-columns: 1fr; }
}