/* Wire Puzzle - Common Styles */

/* CSS Variables for theming */
:root {
    --bg-gradient-start: #1a1a2e;
    --bg-gradient-end: #16213e;
    --primary-color: #FFD700;
    --primary-gradient-start: #FFD700;
    --primary-gradient-end: #FFA500;
    --secondary-gradient-start: #667eea;
    --secondary-gradient-end: #764ba2;
    --accent-color: #667eea;
    --text-primary: #fff;
    --text-secondary: #aaa;
    --canvas-border: #667eea;
    --canvas-bg: #0f0f1e;
    --panel-bg: rgba(255, 255, 255, 0.05);
    --panel-border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.container {
    max-width: 1200px;
    width: 100%;
    padding: 20px;
    padding-top: 70px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    font-size: 3em;
    margin-bottom: 10px;
    background: linear-gradient(45deg, var(--primary-gradient-start), var(--primary-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: 1.8em;
    margin-bottom: 20px;
    color: var(--primary-color);
}

p {
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 1.1em;
}

/* Buttons */
.btn {
    background: linear-gradient(135deg, var(--secondary-gradient-start) 0%, var(--secondary-gradient-end) 100%);
    color: var(--text-primary);
    border: none;
    padding: 15px 30px;
    font-size: 1.1em;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    display: inline-block;
    margin: 5px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary-gradient-start) 0%, var(--primary-gradient-end) 100%);
    color: #000;
    font-weight: bold;
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-gradient-start) 0%, var(--secondary-gradient-end) 100%);
}

.btn-danger {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9em;
}

/* Canvas */
canvas {
    border: 3px solid var(--canvas-border);
    border-radius: 10px;
    background: var(--canvas-bg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    cursor: pointer;
}

/* Info panels */
.info-panel {
    background: var(--panel-bg);
    border: 2px solid var(--panel-border);
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.stats {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 20px;
}

.stat {
    text-align: center;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9em;
    margin-bottom: 5px;
}

.stat-value {
    font-size: 2em;
    font-weight: bold;
    color: var(--primary-color);
}

/* Grid layout */
.grid {
    display: grid;
    gap: 15px;
    margin: 20px 0;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

/* Card */
.card {
    background: var(--panel-bg);
    border: 2px solid var(--panel-border);
    border-radius: 10px;
    padding: 20px;
    transition: transform 0.2s, border-color 0.2s;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.card h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.card p {
    color: var(--text-secondary);
    font-size: 0.9em;
    margin: 0;
}

/* Badge */
.badge {
    display: inline-block;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.8em;
    font-weight: bold;
    margin-right: 5px;
}

.badge-easy {
    background: #4ade80;
    color: #000;
}

.badge-medium {
    background: #facc15;
    color: #000;
}

.badge-hard {
    background: #f87171;
    color: #000;
}

/* Controls */
.controls {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin: 20px 0;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    border: 3px solid var(--accent-color);
    border-radius: 15px;
    padding: 40px;
    max-width: 500px;
    text-align: center;
    animation: modalFadeIn 0.3s;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Win animation */
.win-message {
    font-size: 2.5em;
    color: var(--primary-color);
    margin-bottom: 20px;
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* Back link */
.back-link {
    position: absolute;
    top: 20px;
    left: 20px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 1.2em;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: transform 0.2s;
    z-index: 100;
}

.back-link:hover {
    transform: translateX(-5px);
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2em;
    }

    h2 {
        font-size: 1.3em;
    }

    canvas {
        max-width: 100%;
    }

    .btn {
        padding: 12px 24px;
        font-size: 1em;
    }
}