/**
 * Spartaco AI Gallery - Frontend Styles
 * Design: Minimale, Elegante, Pulito
 */

/* ========================================
   VARIABILI CSS
   ======================================== */
:root {
    --spartaco-primary: #667eea;
    --spartaco-primary-dark: #5568d3;
    --spartaco-secondary: #764ba2;
    --spartaco-accent: #f093fb;
    --spartaco-success: #51cf66;
    --spartaco-error: #ff6b6b;
    --spartaco-warning: #ffd93d;

    --spartaco-text: #2c3e50;
    --spartaco-text-light: #6c757d;
    --spartaco-text-lighter: #95a5a6;

    --spartaco-bg: #ffffff;
    --spartaco-bg-light: #f8f9fa;
    --spartaco-bg-dark: #f1f3f5;

    --spartaco-border: #e9ecef;
    --spartaco-border-light: #dee2e6;

    --spartaco-shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --spartaco-shadow: 0 4px 16px rgba(0,0,0,0.12);
    --spartaco-shadow-lg: 0 8px 32px rgba(0,0,0,0.16);

    --spartaco-radius: 12px;
    --spartaco-radius-sm: 8px;
    --spartaco-radius-lg: 16px;

    --spartaco-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   RESET & BASE
   ======================================== */
.spartaco-ai-gallery *,
.spartaco-ai-gallery *::before,
.spartaco-ai-gallery *::after {
    box-sizing: border-box;
}

.spartaco-ai-gallery {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--spartaco-text);
    line-height: 1.6;
}

/* ========================================
   AI GENERATOR
   ======================================== */
.spartaco-ai-generator {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

.spartaco-generator-card {
    background: var(--spartaco-bg);
    border-radius: var(--spartaco-radius);
    box-shadow: var(--spartaco-shadow);
    padding: 32px;
    transition: var(--spartaco-transition);
}

.spartaco-generator-card:hover {
    box-shadow: var(--spartaco-shadow-lg);
}

.spartaco-generator-header {
    text-align: center;
    margin-bottom: 32px;
}

.spartaco-generator-title {
    font-size: 28px;
    font-weight: 600;
    color: var(--spartaco-text);
    margin: 0 0 8px 0;
    letter-spacing: -0.5px;
}

.spartaco-generator-subtitle {
    font-size: 16px;
    color: var(--spartaco-text-light);
    margin: 0;
    font-weight: 400;
}

/* Form Elements */
.spartaco-form-group {
    margin-bottom: 24px;
}

.spartaco-form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--spartaco-text);
    margin-bottom: 8px;
    letter-spacing: 0.2px;
}

.spartaco-form-input,
.spartaco-form-textarea,
.spartaco-form-select {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    color: var(--spartaco-text);
    background: var(--spartaco-bg-light);
    border: 2px solid transparent;
    border-radius: var(--spartaco-radius-sm);
    transition: var(--spartaco-transition);
    font-family: inherit;
}

.spartaco-form-input:focus,
.spartaco-form-textarea:focus,
.spartaco-form-select:focus {
    outline: none;
    background: var(--spartaco-bg);
    border-color: var(--spartaco-primary);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.spartaco-form-textarea {
    min-height: 120px;
    resize: vertical;
}

.spartaco-form-help {
    display: block;
    font-size: 13px;
    color: var(--spartaco-text-lighter);
    margin-top: 6px;
}

/* Buttons */
.spartaco-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    color: white;
    background: linear-gradient(135deg, var(--spartaco-primary), var(--spartaco-secondary));
    border: none;
    border-radius: var(--spartaco-radius-sm);
    cursor: pointer;
    transition: var(--spartaco-transition);
    text-decoration: none;
    gap: 8px;
}

.spartaco-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--spartaco-shadow);
}

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

.spartaco-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.spartaco-btn-primary {
    background: linear-gradient(135deg, var(--spartaco-primary), var(--spartaco-secondary));
}

.spartaco-btn-secondary {
    background: var(--spartaco-bg-dark);
    color: var(--spartaco-text);
}

.spartaco-btn-large {
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
}

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

/* Provider Selector */
.spartaco-provider-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.spartaco-provider-option {
    position: relative;
}

.spartaco-provider-option input[type="radio"] {
    position: absolute;
    opacity: 0;
}

.spartaco-provider-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px;
    background: var(--spartaco-bg-light);
    border: 2px solid transparent;
    border-radius: var(--spartaco-radius-sm);
    cursor: pointer;
    transition: var(--spartaco-transition);
    text-align: center;
}

.spartaco-provider-label:hover {
    background: var(--spartaco-bg-dark);
    border-color: var(--spartaco-border-light);
}

.spartaco-provider-option input[type="radio"]:checked + .spartaco-provider-label {
    background: var(--spartaco-bg);
    border-color: var(--spartaco-primary);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.spartaco-provider-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.spartaco-provider-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--spartaco-text);
}

.spartaco-provider-badge {
    font-size: 11px;
    color: var(--spartaco-success);
    margin-top: 4px;
}

/* Result Display */
.spartaco-result {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--spartaco-border);
}

.spartaco-result-image {
    position: relative;
    border-radius: var(--spartaco-radius);
    overflow: hidden;
    box-shadow: var(--spartaco-shadow);
    margin-bottom: 16px;
}

.spartaco-result-image img {
    width: 100%;
    height: auto;
    display: block;
}

.spartaco-result-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* Loading States */
.spartaco-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
}

.spartaco-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--spartaco-bg-dark);
    border-top-color: var(--spartaco-primary);
    border-radius: 50%;
    animation: spartaco-spin 0.8s linear infinite;
}

@keyframes spartaco-spin {
    to { transform: rotate(360deg); }
}

.spartaco-loading-text {
    margin-top: 16px;
    font-size: 15px;
    color: var(--spartaco-text-light);
}

/* Alerts */
.spartaco-alert {
    padding: 16px 20px;
    border-radius: var(--spartaco-radius-sm);
    margin-bottom: 24px;
    display: flex;
    align-items: start;
    gap: 12px;
}

.spartaco-alert-success {
    background: rgba(81, 207, 102, 0.1);
    color: var(--spartaco-success);
    border-left: 4px solid var(--spartaco-success);
}

.spartaco-alert-error {
    background: rgba(255, 107, 107, 0.1);
    color: var(--spartaco-error);
    border-left: 4px solid var(--spartaco-error);
}

.spartaco-alert-warning {
    background: rgba(255, 217, 61, 0.1);
    color: #d4980d;
    border-left: 4px solid var(--spartaco-warning);
}

/* ========================================
   AI GALLERY GRID
   ======================================== */
.spartaco-ai-gallery-grid {
    padding: 40px 20px;
}

.spartaco-gallery-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.spartaco-gallery-item {
    position: relative;
    border-radius: var(--spartaco-radius);
    overflow: hidden;
    background: var(--spartaco-bg);
    box-shadow: var(--spartaco-shadow-sm);
    transition: var(--spartaco-transition);
}

.spartaco-gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--spartaco-shadow-lg);
}

.spartaco-gallery-item-image {
    position: relative;
    width: 100%;
    padding-top: 100%; /* 1:1 Aspect Ratio */
    overflow: hidden;
    background: var(--spartaco-bg-light);
}

.spartaco-gallery-item-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--spartaco-transition);
}

.spartaco-gallery-item:hover .spartaco-gallery-item-image img {
    transform: scale(1.05);
}

.spartaco-gallery-item-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    opacity: 0;
    transition: var(--spartaco-transition);
    display: flex;
    align-items: flex-end;
    padding: 16px;
}

.spartaco-gallery-item:hover .spartaco-gallery-item-overlay {
    opacity: 1;
}

.spartaco-gallery-item-meta {
    padding: 16px;
}

.spartaco-gallery-item-title {
    font-size: 16px;
    font-weight: 500;
    color: var(--spartaco-text);
    margin: 0 0 8px 0;
    line-height: 1.4;
}

.spartaco-gallery-item-info {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--spartaco-text-lighter);
}

.spartaco-gallery-item-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    background: var(--spartaco-bg-light);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    color: var(--spartaco-primary);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    .spartaco-generator-card {
        padding: 24px 20px;
    }

    .spartaco-generator-title {
        font-size: 24px;
    }

    .spartaco-provider-selector {
        grid-template-columns: repeat(2, 1fr);
    }

    .spartaco-gallery-items {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .spartaco-ai-generator,
    .spartaco-ai-gallery-grid {
        padding: 24px 16px;
    }

    .spartaco-provider-selector {
        grid-template-columns: 1fr;
    }

    .spartaco-result-actions {
        flex-direction: column;
    }

    .spartaco-btn {
        width: 100%;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes spartaco-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.spartaco-fade-in {
    animation: spartaco-fade-in 0.4s ease-out;
}

/* ========================================
   UTILITIES
   ======================================== */
.spartaco-text-center {
    text-align: center;
}

.spartaco-mt-1 { margin-top: 8px; }
.spartaco-mt-2 { margin-top: 16px; }
.spartaco-mt-3 { margin-top: 24px; }
.spartaco-mt-4 { margin-top: 32px; }

.spartaco-mb-1 { margin-bottom: 8px; }
.spartaco-mb-2 { margin-bottom: 16px; }
.spartaco-mb-3 { margin-bottom: 24px; }
.spartaco-mb-4 { margin-bottom: 32px; }

.spartaco-hidden {
    display: none !important;
}