:root {
    --bg-core: #0a0b0d;
    --bg-surface: #15191d;
    --primary: #f59e0b;
    --primary-glow: rgba(245, 158, 11, 0.2);
    --text-main: #e2e8f0;
    --text-dim: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
    --success: #2dd4bf;
}

body {
    margin: 0;
    font-family: 'Space Grotesk', sans-serif;
    background-color: var(--bg-core);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 500px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    padding: 40px;
    border-radius: 12px;
    position: relative;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
}

.container::before {
    content: "MODULE // 16 // ROUTINE_OPTIMIZER";
    position: absolute;
    top: -24px;
    left: 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--primary);
    letter-spacing: 1px;
}

.back-link {
    display: block;
    text-align: left;
    margin-bottom: 24px;
    text-decoration: none;
    color: var(--text-dim);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
}

h1 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: -1px;
    text-align: center;
}

/* Routine List Area */
.routine-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 30px;
}

.routine-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    padding: 18px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.2s;
}

.routine-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.routine-item.completed {
    border-color: var(--success);
    background: rgba(45, 212, 191, 0.05);
}

.routine-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
}

.routine-item.completed .routine-text {
    color: var(--success);
    text-decoration: line-through;
    opacity: 0.6;
}

/* Custom Checkbox Appearance */
.checkbox-proxy {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-radius: 4px;
    position: relative;
    transition: 0.2s;
}

.completed .checkbox-proxy {
    border-color: var(--success);
    background: var(--success);
}

.completed .checkbox-proxy::after {
    content: "✓";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--bg-core);
    font-weight: bold;
    font-size: 0.8rem;
}

/* Commit Button */
.primary {
    width: 100%;
    padding: 18px;
    background: var(--primary);
    color: var(--bg-core);
    border: none;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    cursor: pointer;
    box-shadow: 0 0 20px var(--primary-glow);
    transition: 0.3s;
}

.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 30px var(--primary-glow);
}

.primary:active {
    transform: translateY(0);
}

.hidden {
    display: none !important;
}