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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
    color: #fff;
}

/* Header */
.game-header {
    width: 100%;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    z-index: 100;
}

.game-header h1 {
    font-size: 1.6rem;
    background: linear-gradient(90deg, #f7971e, #ffd200);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
}

.back-link {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}
.back-link:hover { color: #fff; }

/* HUD */
.hud {
    display: flex;
    gap: 16px;
    padding: 10px 20px;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    max-width: 900px;
}

.hud-item {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 12px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    backdrop-filter: blur(5px);
    min-width: 120px;
    justify-content: center;
}

.hud-item .icon {
    font-size: 1.3rem;
}

.hud-item .value {
    font-weight: 700;
    font-size: 1.1rem;
    color: #ffd200;
}

.hud-item .label {
    color: rgba(255,255,255,0.6);
    font-size: 0.8rem;
}

/* Canvas wrapper */
.canvas-wrapper {
    position: relative;
    margin: 10px 0;
    border-radius: 16px;
    overflow: hidden;
    box-shadow:
        0 0 40px rgba(247, 151, 30, 0.15),
        0 20px 60px rgba(0,0,0,0.4);
    border: 2px solid rgba(255,255,255,0.1);
}

canvas {
    display: block;
    cursor: none;
}

/* Carrying indicator */
.carry-bar {
    display: flex;
    gap: 6px;
    padding: 8px 16px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.carry-slot {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(255,255,255,0.06);
    border: 2px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    transition: all 0.2s;
}

.carry-slot.filled {
    background: rgba(255,255,255,0.15);
    border-color: rgba(247, 151, 30, 0.5);
    transform: scale(1.05);
    animation: slotPop 0.3s ease;
}

.carry-slot.empty {
    opacity: 0.4;
}

@keyframes slotPop {
    0% { transform: scale(0.7); }
    60% { transform: scale(1.15); }
    100% { transform: scale(1.05); }
}

/* Controls */
.controls-bar {
    display: flex;
    gap: 10px;
    padding: 8px 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.ctrl-btn {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    color: #fff;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 600;
}

.ctrl-btn:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-1px);
}

.ctrl-btn.active {
    background: rgba(46, 204, 113, 0.3);
    border-color: rgba(46, 204, 113, 0.5);
}

/* Instructions */
.instructions {
    color: rgba(255,255,255,0.5);
    font-size: 0.8rem;
    text-align: center;
    padding: 6px 20px 16px;
    max-width: 700px;
    line-height: 1.4;
}

.instructions kbd {
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 4px;
    padding: 1px 6px;
    font-family: inherit;
    font-size: 0.85em;
}

/* Overlays */
.overlay {
    position: absolute;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 50;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
}

.overlay.visible {
    display: flex;
}

.overlay-content {
    background: rgba(20, 20, 40, 0.95);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    max-width: 400px;
}

.overlay-content h2 {
    font-size: 2rem;
    margin-bottom: 12px;
    background: linear-gradient(90deg, #f7971e, #ffd200);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.overlay-content p {
    color: rgba(255,255,255,0.7);
    margin-bottom: 20px;
    line-height: 1.5;
}

.overlay-content .stat-line {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    font-size: 0.95rem;
}

.overlay-content .stat-line .stat-val {
    font-weight: 700;
    color: #ffd200;
}

.overlay-btn {
    background: linear-gradient(135deg, #f7971e, #ffd200);
    color: #1a1a2e;
    border: none;
    padding: 14px 36px;
    border-radius: 25px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    margin-top: 16px;
    transition: all 0.2s;
}

.overlay-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(247, 151, 30, 0.4);
}

/* Level up notification */
.level-up-banner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    background: linear-gradient(135deg, #f7971e, #ffd200);
    color: #1a1a2e;
    padding: 20px 40px;
    border-radius: 20px;
    font-size: 1.5rem;
    font-weight: 800;
    z-index: 60;
    pointer-events: none;
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    text-align: center;
    box-shadow: 0 10px 40px rgba(247, 151, 30, 0.5);
}

.level-up-banner.show {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

/* Upgrade shop */
.upgrade-panel {
    position: absolute;
    right: 10px;
    top: 10px;
    background: rgba(20, 20, 40, 0.92);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 14px;
    padding: 14px;
    z-index: 40;
    display: none;
    width: 220px;
    backdrop-filter: blur(10px);
}

.upgrade-panel.visible {
    display: block;
}

.upgrade-panel h3 {
    font-size: 0.95rem;
    margin-bottom: 10px;
    color: #ffd200;
    text-align: center;
}

.upgrade-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    border-radius: 10px;
    margin-bottom: 6px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    cursor: pointer;
    transition: all 0.2s;
}

.upgrade-item:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(247, 151, 30, 0.3);
}

.upgrade-item.owned {
    opacity: 0.5;
    cursor: default;
    border-color: rgba(46, 204, 113, 0.3);
}

.upgrade-item .up-icon {
    font-size: 1.3rem;
}

.upgrade-item .up-info {
    flex: 1;
    font-size: 0.78rem;
    line-height: 1.3;
}

.upgrade-item .up-name {
    font-weight: 600;
    color: #fff;
}

.upgrade-item .up-desc {
    color: rgba(255,255,255,0.5);
}

.upgrade-item .up-cost {
    font-weight: 700;
    color: #ffd200;
    font-size: 0.85rem;
    white-space: nowrap;
}

/* Day indicator */
.day-indicator {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(20, 20, 40, 0.85);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 10px;
    padding: 8px 14px;
    z-index: 40;
    backdrop-filter: blur(5px);
    font-size: 0.9rem;
}

.day-indicator .day-num {
    font-weight: 700;
    color: #ffd200;
}

.day-indicator .day-timer {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
    margin-top: 2px;
}

/* Customer queue indicator */
.queue-indicator {
    position: absolute;
    bottom: 10px;
    left: 10px;
    background: rgba(20, 20, 40, 0.85);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 10px;
    padding: 8px 14px;
    z-index: 40;
    backdrop-filter: blur(5px);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 860px) {
    canvas {
        width: 100vw !important;
        height: auto !important;
    }
    .hud { gap: 8px; }
    .hud-item { padding: 6px 10px; min-width: 90px; font-size: 0.85rem; }
}