/* Chinese Writing Practice - CSS */
/* Place in: plugins/chinese-writing-practice/css/style.css */

:root {
    --cw-primary: #e74c3c;
    --cw-primary-dark: #c0392b;
    --cw-blue: #3498db;
    --cw-green: #27ae60;
    --cw-yellow: #f39c12;
    --cw-purple: #9b59b6;
    --cw-gray: #7f8c8d;
    --cw-light: #f8f9fa;
    --cw-border: #e0e0e0;
    --cw-text: #2c3e50;
    --cw-text-light: #7f8c8d;
}

.cw-container {
    max-width: 500px;
    margin: 0 auto;
    padding: 15px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--cw-text);
}

/* Header */
.cw-header {
    text-align: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--cw-primary);
}

.cw-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--cw-primary);
    margin: 0;
}

/* Course Buttons */
.cw-course-btns {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.cw-course-btn {
    flex: 1;
    padding: 10px;
    border: 2px solid var(--cw-border);
    background: #fff;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.cw-course-btn:hover {
    border-color: var(--cw-primary);
}

.cw-course-btn.active {
    background: var(--cw-primary);
    border-color: var(--cw-primary);
    color: #fff;
}

/* Level Row */
.cw-level-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background: var(--cw-light);
    border-radius: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.cw-level-row label {
    font-weight: 500;
    font-size: 0.9rem;
}

.cw-select {
    flex: 1;
    min-width: 120px;
    padding: 8px 12px;
    border: 2px solid var(--cw-border);
    border-radius: 6px;
    font-size: 0.9rem;
}

.cw-filter-label {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.85rem;
    cursor: pointer;
}

.cw-filter-label input {
    width: 16px;
    height: 16px;
}

/* Mode Buttons */
.cw-mode-btns {
    display: flex;
    gap: 4px;
    margin-bottom: 15px;
}

.cw-mode-btn {
    flex: 1;
    padding: 10px;
    border: none;
    background: #fff;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.cw-mode-btn:hover {
    background: #f0f0f0;
}

.cw-mode-btn.active {
    background: var(--cw-blue);
    color: #fff;
}

/* Main Area */
.cw-main {
    background: #fff;
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

/* Writer Section */
.cw-writer-section {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cw-writer-wrap {
    position: relative;
    margin-bottom: 10px;
}

.cw-writer-canvas {
    width: 280px;
    height: 280px;
    border: 2px solid var(--cw-border);
    border-radius: 10px;
    background: #fff;
    background-image: 
        linear-gradient(var(--cw-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--cw-border) 1px, transparent 1px);
    background-size: 70px 70px;
    touch-action: none;
}

.cw-audio-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--cw-blue);
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(52,152,219,0.4);
    transition: transform 0.2s;
}

.cw-audio-btn:hover {
    transform: scale(1.1);
}

.cw-audio-btn.playing {
    animation: pulse 0.5s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

.cw-progress-badge {
    position: absolute;
    bottom: 8px;
    left: 8px;
    background: rgba(255,255,255,0.95);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    color: var(--cw-text-light);
}

.cw-stroke-info {
    color: var(--cw-blue);
}

/* Character Info */
.cw-char-info {
    text-align: center;
    margin-bottom: 10px;
}

.cw-pinyin {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--cw-blue);
}

.cw-meaning {
    font-size: 1rem;
    color: var(--cw-text-light);
}

/* Quiz Result */
.cw-quiz-result {
    text-align: center;
    padding: 10px 20px;
    border-radius: 8px;
    margin-bottom: 10px;
}

.cw-quiz-result.success {
    background: #d4edda;
    color: #155724;
}

.cw-quiz-result.warning {
    background: #fff3cd;
    color: #856404;
}

.cw-result-score {
    font-size: 1.5rem;
    font-weight: 700;
}

.cw-result-text {
    font-size: 0.85rem;
}

/* Control Buttons */
.cw-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    margin-bottom: 10px;
}

.cw-ctrl-btn {
    padding: 8px 14px;
    border: none;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.cw-btn-primary { background: var(--cw-blue); color: #fff; }
.cw-btn-green { background: var(--cw-green); color: #fff; }
.cw-btn-yellow { background: var(--cw-yellow); color: #fff; }
.cw-btn-purple { background: var(--cw-purple); color: #fff; }
.cw-btn-gray { background: var(--cw-gray); color: #fff; }

.cw-ctrl-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Feedback */
.cw-feedback {
    text-align: center;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px;
    border-radius: 6px;
    background: var(--cw-light);
    margin-bottom: 10px;
    min-height: 20px;
}

.cw-feedback:empty {
    display: none;
}

/* Instructions */
.cw-instructions {
    text-align: center;
    font-size: 0.8rem;
    color: var(--cw-text-light);
    margin-bottom: 10px;
}

/* Learned Toggle */
.cw-learned-toggle {
    text-align: center;
}

.cw-learned-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 15px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
    font-size: 0.9rem;
}

.cw-learned-label:hover {
    background: var(--cw-light);
}

.cw-checkbox {
    width: 22px;
    height: 22px;
    border: 2px solid var(--cw-border);
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.cw-checkbox.checked {
    background: var(--cw-green);
    border-color: var(--cw-green);
}

.cw-checkbox.checked::after {
    content: '✓';
    color: #fff;
    font-weight: bold;
    font-size: 14px;
}

.cw-learned-label.learned {
    color: var(--cw-green);
    font-weight: 500;
}

/* Navigation */
.cw-nav {
    display: flex;
    justify-content: space-between;
    padding-top: 15px;
    border-top: 1px solid var(--cw-border);
}

.cw-nav-btn {
    padding: 10px 20px;
    border: 2px solid var(--cw-border);
    background: #fff;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.cw-nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.cw-nav-btn.cw-btn-primary {
    background: var(--cw-primary);
    border-color: var(--cw-primary);
    color: #fff;
}

/* Character Grid */
.cw-grid-section {
    background: #fff;
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.cw-grid-title {
    font-size: 0.95rem;
    margin: 0 0 10px 0;
    color: var(--cw-text);
}

.cw-learned-stats {
    font-weight: normal;
    color: var(--cw-text-light);
}

.cw-char-grid {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 4px;
    max-height: 200px;
    overflow-y: auto;
}

.cw-char-item {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-family: 'Noto Sans SC', 'SimHei', sans-serif;
    background: #fff;
    border: 1px solid var(--cw-border);
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    transition: all 0.15s;
}

.cw-char-item:hover {
    border-color: var(--cw-primary);
    transform: scale(1.05);
}

.cw-char-item.active {
    background: var(--cw-primary);
    border-color: var(--cw-primary);
    color: #fff;
}

.cw-char-item.learned {
    background: #e8f5e9;
    border-color: var(--cw-green);
}

.cw-char-item.learned::after {
    content: '✓';
    position: absolute;
    top: -2px;
    right: 1px;
    font-size: 0.6rem;
    color: var(--cw-green);
}

.cw-char-item.hidden {
    display: none;
}

/* Stats */
.cw-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 15px;
}

.cw-stat-card {
    background: #fff;
    border-radius: 10px;
    padding: 15px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.cw-stat-learned {
    background: #e8f5e9;
}

.cw-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--cw-primary);
}

.cw-stat-learned .cw-stat-value {
    color: var(--cw-green);
}

.cw-stat-label {
    font-size: 0.8rem;
    color: var(--cw-text-light);
}

/* Login Notice */
.cw-login-notice {
    background: #e3f2fd;
    border: 1px solid var(--cw-blue);
    border-radius: 10px;
    padding: 15px;
    text-align: center;
}

.cw-login-notice p {
    margin: 0 0 10px 0;
}

.cw-login-btn {
    display: inline-block;
    padding: 8px 20px;
    background: var(--cw-blue);
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
}

/* Empty State */
.cw-empty {
    text-align: center;
    padding: 40px 20px;
}

.cw-empty-icon {
    font-size: 3rem;
    margin-bottom: 10px;
}

.cw-empty-text {
    color: var(--cw-text-light);
}

/* Responsive */
@media (max-width: 400px) {
    .cw-container {
        padding: 10px;
    }
    
    .cw-writer-canvas {
        width: 240px;
        height: 240px;
        background-size: 60px 60px;
    }
    
    .cw-char-grid {
        grid-template-columns: repeat(8, 1fr);
    }
    
    .cw-ctrl-btn {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
}