/* ============================================
   ADMIN INTERFACE - STYLES
   ============================================ */

:root {
    --primary-color: #4A90E2;
    --primary-dark: #2E5C8A;
    --secondary-color: #50C878;
    --accent-color: #FF6B6B;
    --warning-color: #FFA500;
    --bg-light: #F5F7FA;
    --bg-white: #FFFFFF;
    --text-dark: #2C3E50;
    --text-gray: #7F8C8D;
    --border-color: #E0E4E8;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
}

body:has(.workspace-header) .container {
    padding-top: 80px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* ============================================
   QUICK ACTIONS (Workspace Header replacement)
   ============================================ */

.admin-quick-actions {
    background: var(--bg-white);
    padding: 15px 20px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* ============================================
   HEADER (deprecated - using workspace header now)
   ============================================ */

header {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 2rem;
    color: var(--text-dark);
}

.header-actions {
    display: flex;
    gap: 10px;
}

/* ============================================
   BUTTONS
   ============================================ */

.primary-btn,
.secondary-btn,
.danger-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

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

.primary-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.secondary-btn {
    background: var(--bg-light);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
}

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

.danger-btn {
    background: var(--accent-color);
    color: white;
}

.danger-btn:hover {
    background: #D64545;
}

/* ============================================
   UPLOAD SECTION
   ============================================ */

.upload-section,
.library-section {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.upload-section h2,
.library-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.drop-zone {
    border: 3px dashed var(--border-color);
    border-radius: 12px;
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-light);
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--primary-color);
    background: rgba(74, 144, 226, 0.05);
}

.drop-zone-content {
    pointer-events: none;
}

.upload-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: 15px;
}

.drop-zone-text {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.drop-zone-hint {
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* ============================================
   FORM
   ============================================ */

.upload-form {
    margin-top: 30px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.form-group input[type="text"],
.form-group select {
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input[type="text"]:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    color: var(--text-gray);
    font-size: 0.85rem;
    margin-top: 5px;
}

/* ============================================
   PREVIEW
   ============================================ */

.preview-section {
    background: #1A1D2E;
    padding: 20px;
    border-radius: 12px;
    margin: 20px 0;
}

.preview-section h3 {
    color: white;
    margin-bottom: 15px;
    text-align: center;
}

#preview-canvas-container {
    width: 100%;
    height: 400px;
    background: #0F1419;
    border-radius: 8px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-controls {
    display: flex;
    align-items: center;
    gap: 15px;
    color: white;
}

.preview-controls label {
    font-weight: 600;
}

.preview-controls input[type="range"] {
    flex: 1;
}

/* ============================================
   FORM ACTIONS
   ============================================ */

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* ============================================
   STATUS MESSAGE
   ============================================ */

.status-message {
    padding: 15px 20px;
    border-radius: 8px;
    margin-top: 20px;
    font-weight: 600;
}

.status-message.success {
    background: #D4EDDA;
    color: #155724;
    border: 1px solid #C3E6CB;
}

.status-message.error {
    background: #F8D7DA;
    color: #721C24;
    border: 1px solid #F5C6CB;
}

/* ============================================
   LIBRARY
   ============================================ */

.library-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    flex-wrap: wrap;
    gap: 15px;
}

.filters {
    display: flex;
    gap: 10px;
}

.filter-select {
    padding: 8px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    background: white;
    cursor: pointer;
}

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

/* ============================================
   SHAPES GRID
   ============================================ */

.shapes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.shape-card {
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
}

.shape-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.shape-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.shape-name {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--text-dark);
}

.shape-badges {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge.easy {
    background: #D4EDDA;
    color: #155724;
}

.badge.medium {
    background: #FFF3CD;
    color: #856404;
}

.badge.hard {
    background: #F8D7DA;
    color: #721C24;
}

.badge.category {
    background: #D1ECF1;
    color: #0C5460;
}

.shape-info {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.shape-actions {
    display: flex;
    gap: 10px;
}

.shape-actions button {
    flex: 1;
    padding: 8px;
    border: none;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.test-btn:hover {
    background: var(--primary-dark);
}

.delete-btn {
    background: var(--accent-color);
    color: white;
}

.delete-btn:hover {
    background: #D64545;
}

/* ============================================
   LOADING
   ============================================ */

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-gray);
}

.spinner {
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ============================================
   MODAL
   ============================================ */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    padding: 40px;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-lg);
}

.modal-content h3 {
    margin-bottom: 15px;
    color: var(--text-dark);
}

.modal-content p {
    margin-bottom: 25px;
    color: var(--text-gray);
}

.modal-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
}

@media (max-width: 720px) {
    .container {
        padding: 15px;
    }

    body:has(.workspace-header) .container {
        padding-top: 70px;
    }

    .upload-section,
    .library-section {
        padding: 20px;
    }

    .admin-quick-actions {
        justify-content: center;
        flex-wrap: wrap;
    }

    .form-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .library-header {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .filters {
        display: grid;
        grid-template-columns: 1fr;
        gap: 10px;
        width: 100%;
    }

    .shape-card .shape-actions {
        flex-direction: column;
    }

    .shape-card .badge {
        font-size: 0.65rem;
    }

    #preview-canvas-container {
        height: 320px;
    }
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .library-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .shapes-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   UTILITIES
   ============================================ */

.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}