:root {
    --bg: #0a0d13;
    --panel: #141920;
    --accent: #e94560;
    --gold: #f0c060;
    --green: #10b981;
    --blue: #3b82f6;
    --purple: #8b5cf6;
    --text: #e0e4ea;
    --dim: #8890a0;
    --border: #2a3040;
    --card: #1a1f2b;
    --danger: #ef4444;
    --warning: #f59e0b;
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    position: fixed;
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

/* Canvas */
#gameCanvas {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* HUD */
#hud {
    position: absolute;
    top: 8px;
    left: 6px;
    right: 6px;
    z-index: 10;
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    pointer-events: none;
}

.hud-item {
    background: rgba(20, 25, 32, 0.92);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 5px 10px;
    font-size: 0.68rem;
    font-weight: 600;
    backdrop-filter: blur(12px);
    white-space: nowrap;
    pointer-events: auto;
    cursor: pointer;
    transition: 0.2s;
}

.hud-item:active {
    background: rgba(30, 36, 46, 0.95);
}

.hud-item .val {
    color: var(--gold);
    font-weight: 700;
}

.hud-item .warn {
    color: var(--danger);
    font-weight: 700;
    animation: blink 0.8s infinite;
}

@keyframes blink {
    50% {
        opacity: 0.4;
    }
}

/* Tombol */
#actions {
    position: absolute;
    bottom: 10px;
    left: 6px;
    right: 6px;
    z-index: 10;
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 9px 8px;
    border-radius: 22px;
    font-size: 0.68rem;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
    white-space: nowrap;
    flex: 1;
    min-width: 55px;
    max-width: 105px;
    text-align: center;
    position: relative;
}

.btn:active {
    transform: scale(0.92);
    filter: brightness(1.3);
}

.btn.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 4px 16px rgba(233, 68, 96, 0.3);
}

.btn.green {
    background: var(--green);
    border-color: var(--green);
    color: #fff;
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
}

.btn.blue {
    background: var(--blue);
    border-color: var(--blue);
    color: #fff;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.btn.purple {
    background: var(--purple);
    border-color: var(--purple);
    color: #fff;
    box-shadow: 0 4px 16px rgba(139, 92, 246, 0.3);
}

/* Modal */
#modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    z-index: 50;
    display: none;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
}

#modal-overlay.show {
    display: flex;
}

#modal {
    background: var(--panel);
    border: 2px solid var(--accent);
    border-radius: 18px;
    padding: 20px;
    max-width: 370px;
    width: 90%;
    text-align: center;
    max-height: 80vh;
    overflow-y: auto;
}

#modal h3 {
    color: var(--gold);
    margin-bottom: 6px;
    font-size: 1.1rem;
}

#modal p {
    font-size: 0.8rem;
    color: var(--dim);
    margin-bottom: 14px;
    line-height: 1.5;
    text-align: left;
    white-space: pre-line;
}

#modal-buttons {
    display: flex;
    gap: 8px;
    justify-content: center;
}

#modal-buttons button {
    color: #fff;
    border: none;
    padding: 10px 24px;
    border-radius: 20px;
    font-weight: 700;
    cursor: pointer;
    font-size: 0.85rem;
}

.modal-ok {
    background: var(--accent);
}

.modal-action {
    background: var(--green);
}

/* Toast */
#toast {
    position: absolute;
    top: 90px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 60;
    background: var(--panel);
    border: 1px solid var(--gold);
    padding: 8px 18px;
    border-radius: 22px;
    font-weight: 600;
    font-size: 0.73rem;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
    white-space: nowrap;
}

#toast.show {
    opacity: 1;
}

#toast.error {
    border-color: var(--danger);
}

#toast.success {
    border-color: var(--green);
}

/* Stats Panel */
#stats-panel {
    position: absolute;
    top: 45%;
    right: 8px;
    z-index: 11;
    background: rgba(20, 25, 32, 0.9);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 10px 12px;
    font-size: 0.6rem;
    display: none;
    flex-direction: column;
    gap: 4px;
    backdrop-filter: blur(10px);
    pointer-events: auto;
    max-width: 160px;
}

#stats-panel.show {
    display: flex;
}

/* Achievement Popup */
#achievement-popup {
    position: absolute;
    top: 120px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 55;
    background: var(--panel);
    border: 2px solid var(--gold);
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 700;
    font-size: 0.75rem;
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

#achievement-popup.show {
    opacity: 1;
    animation: popIn 0.5s ease-out;
}

@keyframes popIn {
    0% {
        transform: translateX(-50%) scale(0.5);
        opacity: 0;
    }
    70% {
        transform: translateX(-50%) scale(1.1);
    }
    100% {
        transform: translateX(-50%) scale(1);
        opacity: 1;
    }
}

@media (max-width: 370px) {
    .btn {
        font-size: 0.6rem;
        padding: 7px 5px;
        border-radius: 18px;
    }
    .hud-item {
        font-size: 0.6rem;
        padding: 4px 8px;
    }
}