/* ========================================
   Text Art Creator - Frontend Styles
   ======================================== */

/* CSS Variables */
:root {
    --tac-primary: #8B5CF6;
    --tac-secondary: #3B82F6;
    --tac-text: #1F2937;
    --tac-border: #E5E7EB;
    --tac-bg: #F9FAFB;
    --tac-white: #FFFFFF;
    --tac-radius: 6px;
    --tac-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

/* Main Wrapper */
.tac-app-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Header */
.tac-header {
    text-align: center;
    margin-bottom: 20px;
}

.tac-header h2 {
    font-size: 22px;
    font-weight: 600;
    color: var(--tac-text);
    margin: 0 0 4px 0;
}

.tac-header p {
    font-size: 14px;
    color: #6B7280;
    margin: 0;
}

/* Main Content Layout */
.tac-main-content {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 20px;
    margin-bottom: 16px;
}

/* Sidebar */
.tac-sidebar {
    background: var(--tac-white);
    border: 1px solid var(--tac-border);
    border-radius: var(--tac-radius);
    height: fit-content;
    max-height: calc(100vh - 180px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Scrollable Content */
.tac-sidebar-scrollable {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    padding-bottom: 0;
}

/* Fixed Bottom Actions */
.tac-sidebar-fixed {
    border-top: 1px solid var(--tac-border);
    padding: 12px 16px;
    background: var(--tac-bg);
}

/* Control Groups */
.tac-control-group {
    margin-bottom: 16px;
}

.tac-control-group:last-child {
    margin-bottom: 0;
}

.tac-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--tac-text);
    margin-bottom: 8px;
}

/* Textarea */
.tac-textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--tac-border);
    border-radius: var(--tac-radius);
    font-size: 13px;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.2s;
}

.tac-textarea:focus {
    outline: none;
    border-color: var(--tac-primary);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.1);
}

/* Select */
.tac-select {
    width: 100%;
    padding: 7px 10px;
    border: 1px solid var(--tac-border);
    border-radius: var(--tac-radius);
    font-size: 13px;
    background: var(--tac-white);
    cursor: pointer;
    transition: border-color 0.2s;
}

.tac-select:focus {
    outline: none;
    border-color: var(--tac-primary);
}

/* Font Grid */
.tac-font-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.tac-font-card {
    border: 1.5px solid var(--tac-border);
    border-radius: var(--tac-radius);
    padding: 8px 6px;
    text-align: center;
    cursor: pointer;
    transition: all 0.15s;
}

.tac-font-card:hover {
    border-color: var(--tac-primary);
    transform: translateY(-1px);
    box-shadow: var(--tac-shadow);
}

.tac-font-card.active {
    border-color: var(--tac-primary);
    background: rgba(139, 92, 246, 0.05);
}

.tac-font-preview {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 2px;
    line-height: 1;
}

.tac-font-name {
    font-size: 11px;
    color: #6B7280;
    display: block;
}

/* Background Grid */
.tac-bg-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.tac-bg-btn {
    aspect-ratio: 1;
    border: 2px solid var(--tac-border);
    border-radius: var(--tac-radius);
    background-color: var(--tac-white);
    background-size: cover;
    background-position: center;
    cursor: pointer;
    transition: all 0.15s;
    padding: 0;
    position: relative;
    overflow: hidden;
}

.tac-bg-btn:hover {
    border-color: var(--tac-primary);
    transform: scale(1.05);
}

.tac-bg-btn.active {
    border-color: var(--tac-primary);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}

.tac-bg-none-icon {
    font-size: 32px;
    color: #9CA3AF;
    font-weight: 300;
    line-height: 1;
}

/* Decoration Grid */
.tac-deco-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
}

.tac-deco-btn {
    aspect-ratio: 1;
    border: 2px solid var(--tac-border);
    border-radius: var(--tac-radius);
    padding: 6px;
    cursor: pointer;
    transition: all 0.15s;
    background: var(--tac-white);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tac-deco-btn:hover {
    border-color: var(--tac-primary);
    transform: scale(1.1);
}

.tac-deco-btn.active {
    border-color: var(--tac-primary);
    background: rgba(139, 92, 246, 0.05);
}

.tac-deco-btn img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Sliders */
.tac-slider-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.tac-slider-label {
    font-size: 12px;
    color: #6B7280;
    min-width: 40px;
}

.tac-slider {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--tac-border);
    border-radius: 2px;
    outline: none;
}

.tac-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--tac-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s;
}

.tac-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.tac-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--tac-primary);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    transition: transform 0.2s;
}

.tac-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
}

/* Paper Size Grid */
.tac-paper-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.tac-paper-btn {
    padding: 6px 2px;
    border: 1px solid var(--tac-border);
    border-radius: 4px;
    background: var(--tac-white);
    font-size: 10px;
    font-weight: 500;
    color: var(--tac-text);
    cursor: pointer;
    transition: all 0.15s;
}

.tac-paper-btn:hover {
    border-color: var(--tac-primary);
    background: rgba(139, 92, 246, 0.05);
}

.tac-paper-btn.active {
    border-color: var(--tac-primary);
    background: var(--tac-primary);
    color: var(--tac-white);
}

/* Canvas Area */
.tac-canvas-area {
    background: var(--tac-white);
    border: 1px solid var(--tac-border);
    border-radius: var(--tac-radius);
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 600px;
    overflow: hidden;
}

.tac-canvas-wrapper {
    max-width: 100%;
    max-height: 100%;
    overflow: hidden;
}

.tac-coloring-canvas {
    display: block;
    max-width: 100%;
    height: auto;
    border: 1px solid var(--tac-border);
    border-radius: 4px;
}

/* Buttons */
.tac-btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--tac-radius);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.tac-btn-block {
    width: 100%;
}

.tac-btn-download {
    background: var(--tac-primary);
    color: var(--tac-white);
}

.tac-btn-download:hover {
    background: #7C3AED;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

/* Social Share */
.tac-social-share {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.tac-share-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.2s;
}

.tac-share-btn.fb {
    background: #1877F2;
    color: var(--tac-white);
}

.tac-share-btn.tw {
    background: #1DA1F2;
    color: var(--tac-white);
}

.tac-share-btn:hover {
    transform: scale(1.1);
}

/* Inspire Button */
.tac-inspire-button {
    width: 100%;
    padding: 7px 10px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--tac-white);
    border: none;
    border-radius: var(--tac-radius);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.tac-inspire-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

/* Responsive */
@media (max-width: 1024px) {
    .tac-main-content {
        grid-template-columns: 1fr;
    }
    
    .tac-sidebar {
        max-height: none;
    }
    
    .tac-font-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .tac-font-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .tac-deco-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .tac-paper-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .tac-action-bar {
        flex-direction: column;
        gap: 12px;
    }
}