:root {
    --bg-color: #0d1117;
    --text-color: #c9d1d9;
    --primary: #58a6ff;
    --danger: #f85149;
    --success: #3fb950;
    --panel-bg: rgba(22, 27, 34, 0.7);
    --panel-border: rgba(240, 246, 252, 0.1);

    --cell-hidden: #21262d;
    --cell-hidden-hover: #30363d;
    --cell-revealed: #0d1117;
    --cell-stroke: #30363d;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow: hidden;
    width: 100vw;
    height: 100vh;
}

#game {
    position: relative;
    width: 100%;
    height: 100%;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
    cursor: grab;
}

canvas:active {
    cursor: grabbing;
}

#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 20px;
}

#header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    pointer-events: auto;
}

#commit-hash {
    pointer-events: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 0;
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
}

h1 {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #58a6ff, #bc8cff);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 4px 12px rgba(88, 166, 255, 0.3);
}

#stats {
    display: flex;
    gap: 15px;
}

.stat-box {
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 10px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #8b949e;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
}

#controls {
    position: absolute;
    bottom: 30px;
    right: 30px;
    pointer-events: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

@media (max-width: 600px) {
    #controls {
        bottom: 20px;
        right: 20px;
        gap: 10px;
    }
}

button {
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--panel-border);
    color: var(--text-color);
    cursor: pointer;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

button:hover {
    background: rgba(48, 54, 61, 0.8);
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

button.active {
    background: var(--primary);
    color: #fff;
    border-color: #fff;
    box-shadow: 0 0 15px rgba(88, 166, 255, 0.5);
}

.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    min-width: 300px;
    max-width: 90vw;
    max-height: 90vh;
    overflow: auto;
    z-index: 1000;
    pointer-events: all;
}

.glass-panel.hidden {
    display: none;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--panel-border);
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.close-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.modal-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.waypoint-controls {
    display: flex;
    justify-content: center;
}

.waypoints-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 300px;
    overflow-y: auto;
}

.waypoint-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.2s;
}

.waypoint-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

.waypoint-item.current {
    background: rgba(88, 166, 255, 0.2);
    border-color: var(--primary);
}

.waypoint-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.waypoint-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.waypoint-coords {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
}

.waypoint-actions {
    display: flex;
    gap: 8px;
}

.waypoint-actions button {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s;
}

.waypoint-actions button:hover {
    background: rgba(255, 255, 255, 0.2);
}

.waypoint-actions button.delete {
    border-color: var(--danger);
    color: var(--danger);
}

.waypoint-actions button.delete:hover {
    background: rgba(248, 81, 73, 0.2);
}

.empty-waypoints {
    text-align: center;
    padding: 32px;
    color: rgba(255, 255, 255, 0.6);
    font-style: italic;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    pointer-events: all;
}

.modal-backdrop.hidden {
    display: none;
}

#game-over {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    opacity: 1;
    transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#game-over.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, -40%);
}

#game-over h2 {
    font-size: 2rem;
    color: var(--danger);
    margin: 0;
}

#game-over.win h2 {
    color: var(--success);
}

#suicideBtn {
    color: var(--danger);
}

#suicideBtn:hover {
    background: rgba(48, 54, 61, 0.8);
    transform: translateY(-2px);
}

.primary-btn {
    width: auto;
    height: auto;
    border-radius: 8px;
    padding: 12px 24px;
    background: var(--primary);
    color: #fff;
    border: none;
    font-weight: 600;
    font-size: 1rem;
}

.primary-btn:hover {
    background: #79c0ff;
}

@media (max-width: 600px) {
    #header {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    h1 {
        font-size: 1.25rem;
    }
}