:root {
    --bg-dark: #0a1128;
    --panel: rgba(16, 27, 61, 0.88);
    --border: rgba(255, 255, 255, 0.14);
    --text: #ffffff;
    --muted: #94a3b8;
    --gold: #f59e0b;
    --cyan: #38bdf8;
    --purple: #a855f7;
    --green: #1eff00;
    --red: #ff4d4d;
}

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

html, body {
    height: 100%;
    width: 100%;
    overflow: hidden;
    background: #0a1128;
    color: var(--text);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    -webkit-user-select: none;
    user-select: none;
    touch-action: manipulation;
}

.bg-gradient {
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at 50% 18%, #1e295d 0%, #0a1128 72%);
    z-index: -2;
}

.hidden { display: none !important; }

/* ---------------- Top bar ---------------- */
#duel-top {
    position: fixed;
    top: 0; left: 0; right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 8px 12px;
    padding-top: max(8px, env(safe-area-inset-top, 8px));
    z-index: 100;
}
.brand {
    font-weight: 800;
    font-size: 15px;
    letter-spacing: 0.4px;
    color: #e2e8f0;
    white-space: nowrap;
}
.top-btn {
    color: #fff;
    text-decoration: none;
    font-size: 12px;
    font-weight: 700;
    padding: 7px 12px;
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.25);
    white-space: nowrap;
}
.top-btn:active { transform: scale(0.95); }

/* ---------------- Screens / cards ---------------- */
.screen {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 70px 16px 20px;
    z-index: 10;
}
.card {
    width: 100%;
    max-width: 430px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 24px 20px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    text-align: center;
}
.card h1 {
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 6px;
    background: linear-gradient(135deg, #fff, #38bdf8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.card h2 { font-size: 22px; margin-bottom: 14px; }
.sub { color: var(--muted); font-size: 13px; line-height: 1.5; margin-bottom: 12px; }

.label {
    display: block;
    text-align: left;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--muted);
    margin: 12px 0 6px;
}
.input {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    font-size: 16px;
    outline: none;
}
.input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15); }
.code-input {
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 8px;
    font-weight: 800;
    font-size: 20px;
    margin-top: 10px;
}

.opt-group { margin-top: 12px; text-align: left; }
.opt-group .label { margin: 0 0 6px; }
.chips { display: flex; gap: 8px; }
.chip {
    flex: 1;
    padding: 9px 6px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.06);
    color: #cbd5e1;
    font-size: 12.5px;
    font-weight: 700;
    cursor: pointer;
    white-space: normal;
    line-height: 1.2;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.chip:active { transform: scale(0.97); }
.chip.active {
    background: linear-gradient(135deg, rgba(2, 132, 199, 0.35), rgba(56, 189, 248, 0.3));
    border-color: var(--cyan);
    color: #fff;
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.15);
}
.opt-note { font-size: 11px; color: var(--muted); margin-top: 8px; text-align: left; }
.settings-line {
    font-size: 13px;
    color: #dbeafe;
    font-weight: 600;
    margin: 0 0 10px;
}

#screen-entry { overflow-y: auto; align-items: safe center; }

.entry-actions {
    display: flex;
    gap: 10px;
    margin-top: 16px;
}
.entry-actions .btn { flex: 1; }

.join-box { margin-top: 4px; display: flex; flex-direction: column; }

.btn {
    padding: 12px 18px;
    border: none;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
    margin-top: 10px;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; cursor: default; }
.btn.primary {
    background: linear-gradient(135deg, #0284c7, #38bdf8);
    border: none;
    box-shadow: 0 6px 18px rgba(2, 132, 199, 0.4);
}
.btn.ghost {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: var(--muted);
}
.btn.small {
    padding: 8px 14px;
    font-size: 13px;
    margin-top: 0;
}
.error { color: #ff7b7b; font-size: 13px; margin-top: 10px; min-height: 18px; }

/* ---------------- Lobby ---------------- */
.room-code-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 10px 14px;
    margin-bottom: 16px;
}
.room-code-wrap .label { margin: 0; text-align: left; }
.room-code {
    font-size: 26px;
    font-weight: 900;
    letter-spacing: 6px;
    color: var(--gold);
    text-shadow: 0 0 16px rgba(245, 158, 11, 0.5);
}
.players { display: flex; flex-direction: column; gap: 8px; margin-bottom: 8px; }
.player-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px 14px;
    font-size: 15px;
}
.player-row .tag {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 8px;
    border-radius: 20px;
    background: rgba(56, 189, 248, 0.15);
    color: var(--cyan);
    border: 1px solid rgba(56, 189, 248, 0.3);
}
.player-row .tag.host { background: rgba(245, 158, 11, 0.15); color: var(--gold); border-color: rgba(245,158,11,.35); }
.player-row .tag.empty { background: rgba(255,255,255,.06); color: var(--muted); border-color: var(--border); }

/* ---------------- Match ---------------- */
#screen-match { padding: 0; }
#duelCanvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    z-index: 1;
}
#hud {
    position: fixed;
    top: 52px; left: 10px; right: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    z-index: 60;
    pointer-events: none;
}
.hud-player {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-width: 90px;
    padding: 8px 12px;
    border-radius: 14px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.16);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}
.hud-player:last-child { align-items: flex-end; }
.hud-player span {
    font-size: 11px;
    color: var(--muted);
    max-width: 130px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.hud-player b { font-size: 22px; color: var(--gold); text-shadow: 0 0 10px rgba(245,158,11,.4); }
#hud-timer {
    font-size: 24px;
    font-weight: 900;
    padding: 8px 16px;
    border-radius: 14px;
    background: rgba(0, 0, 0, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.18);
    font-variant-numeric: tabular-nums;
}
#hud-timer.low { color: #ff6b6b; animation: timerPulse 0.6s ease-in-out infinite; }
@keyframes timerPulse { 0%,100%{opacity:1} 50%{opacity:.55} }

.hint {
    position: fixed;
    bottom: calc(max(14px, env(safe-area-inset-bottom, 14px)) + 8px);
    left: 50%;
    transform: translateX(-50%);
    z-index: 60;
    padding: 10px 18px;
    border-radius: 24px;
    background: rgba(0, 0, 0, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.18);
    font-size: 13px;
    color: #dbeafe;
    white-space: nowrap;
    pointer-events: none;
}
.status-msg {
    position: fixed;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    z-index: 65;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    background: rgba(0, 0, 0, 0.55);
    padding: 10px 20px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
}
.status-msg.show { opacity: 1; }

.toast {
    position: fixed;
    top: 120px; left: 50%;
    transform: translateX(-50%) translateY(-10px);
    z-index: 210;
    padding: 12px 22px;
    border-radius: 16px;
    background: rgba(0, 0, 0, 0.8);
    border: 2px solid var(--gold);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
    text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------------- QTE ---------------- */
#qte {
    position: fixed;
    inset: 0;
    z-index: 200;
    pointer-events: none;
}
.qte-card {
    position: fixed;
    top: 44%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(420px, 92vw);
    padding: 16px;
    border-radius: 20px;
    background: rgba(0, 20, 40, 0.94);
    border: 3px solid var(--gold);
    text-align: center;
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.55);
}
.qte-title {
    font-size: 15px;
    font-weight: 800;
    color: var(--gold);
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}
.qte-problem {
    font-size: 38px;
    font-weight: 900;
    color: #fff;
    letter-spacing: 2px;
    margin-bottom: 10px;
    text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.6);
}
.qte-answer {
    min-height: 58px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 38px;
    font-weight: 900;
    color: var(--gold);
    background: rgba(255, 255, 255, 0.07);
    border: 3px solid rgba(245, 158, 11, 0.5);
    border-radius: 12px;
    margin-bottom: 12px;
    letter-spacing: 4px;
    text-shadow: 0 0 12px rgba(245, 158, 11, 0.6);
}
.qte-answer.wrong {
    color: var(--red);
    border-color: var(--red);
    animation: qteWrong 0.3s ease;
}
@keyframes qteWrong {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    75% { transform: translateX(6px); }
}
.qte-timer {
    width: 100%;
    height: 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    overflow: hidden;
}
.qte-timer-bar {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, #00B4DB, #FFD700);
}
.qte-timer-bar.warning { background: linear-gradient(90deg, #FFA500, #FF6347); }
.qte-timer-bar.danger { background: linear-gradient(90deg, #FF6347, #DC143C); }
.qte-hint { margin-top: 8px; font-size: 11px; color: var(--muted); }

.numpad {
    display: none;
    position: fixed;
    bottom: calc(max(10px, env(safe-area-inset-bottom, 10px)) + 6px);
    left: 50%;
    transform: translateX(-50%);
    z-index: 205;
    grid-template-columns: repeat(3, clamp(50px, 15vw, 78px));
    gap: 8px;
    padding: 8px;
    border-radius: 18px;
    background: rgba(0, 20, 40, 0.9);
    border: 2px solid rgba(245, 158, 11, 0.6);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.55);
    opacity: 0.55;
    pointer-events: auto;
}
.key {
    width: clamp(50px, 15vw, 78px);
    height: clamp(50px, 15vw, 78px);
    border-radius: 14px;
    border: 2px solid var(--gold);
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.25), rgba(255, 165, 0, 0.35));
    color: #fff;
    font-size: clamp(20px, 6.5vw, 30px);
    font-weight: 800;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}
.key:active { transform: scale(0.92); background: rgba(255, 215, 0, 0.6); }
.key.del { border-color: #FFA500; background: linear-gradient(135deg, rgba(255,165,0,.35), rgba(220,20,60,.45)); }
.key.blank { visibility: hidden; }

/* ---------------- Result ---------------- */
#result {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(4, 10, 24, 0.82);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}
.result-card { max-width: 460px; }
.result-card h2 { font-size: 28px; margin-bottom: 14px; }
.result-scores { display: flex; gap: 10px; justify-content: center; margin-bottom: 8px; }
.result-player {
    flex: 1;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px 10px;
}
.result-player .n { font-size: 13px; color: var(--muted); margin-bottom: 6px; word-break: break-word; }
.result-player .s { font-size: 30px; font-weight: 900; color: var(--gold); }
.result-player.win { border-color: var(--green); box-shadow: 0 0 22px rgba(30, 255, 0, 0.25); }
.result-player.win .s { color: var(--green); }

@media (max-width: 760px) {
    .numpad { display: grid; }
    .qte-hint { display: none; }
    .qte-card { top: 44%; padding: 12px; }
    .qte-problem { font-size: 30px; }
    .qte-answer { min-height: 48px; font-size: 30px; }

    /* Mobile: hilangkan info dobel supaya layar lebih lega */
    .brand { display: none; }
    #hud {
        top: 46px;
        justify-content: center;
        gap: 0;
    }
    #hud .hud-player { display: none; }
    #hud-timer { font-size: 22px; padding: 7px 15px; }
}

@media (max-width: 380px) {
    .top-btn { padding: 6px 9px; font-size: 11px; }
    .brand { font-size: 12px; }
    .hud-player { min-width: 74px; padding: 6px 9px; }
    .hud-player b { font-size: 18px; }
    #hud-timer { font-size: 20px; padding: 6px 11px; }
    .chip { font-size: 11px; padding: 8px 4px; }
}