/* 
 * Prompt Testing Panel Styles
 * Dark theme professional styling with modern aesthetics
 */

/* CSS Variables - Dark Theme */
:root {
    --primary-color: #6366F1;
    --primary-hover: #818CF8;
    --secondary-color: #8B5CF6;
    --success-color: #10B981;
    --error-color: #EF4444;
    --warning-color: #F59E0B;
    --bg-primary: #1E293B;
    --bg-secondary: #0F172A;
    --bg-tertiary: #1E293B;
    --bg-card: #1E293B;
    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-tertiary: #94A3B8;
    --border-color: #334155;
    --border-hover: #475569;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.75rem;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
}

h2 {
    font-size: 1.5rem;
}

h3 {
    font-size: 1.25rem;
}

p {
    margin-bottom: 1rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--primary-hover);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.container-narrow {
    max-width: 480px;
    margin: 0 auto;
    padding: 2rem;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 1.5rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

/* Form Elements */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    background-color: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.2s ease;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    background-color: var(--bg-tertiary);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-input:hover,
.form-textarea:hover,
.form-select:hover {
    border-color: var(--border-hover);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-tertiary);
    opacity: 0.7;
}

.form-textarea {
    resize: vertical;
    min-height: 150px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 500;
    font-family: inherit;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: #FFFFFF;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-hover) 0%, #A78BFA 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg-tertiary);
    border-color: var(--border-hover);
}

.btn-success {
    background-color: var(--success-color);
    color: #FFFFFF;
}

.btn-success:hover:not(:disabled) {
    background-color: #059669;
    transform: translateY(-1px);
}

.btn-danger {
    background-color: var(--error-color);
    color: #FFFFFF;
}

.btn-danger:hover:not(:disabled) {
    background-color: #DC2626;
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Button Group */
.btn-group {
    display: flex;
    gap: 0.75rem;
}

.btn-group .btn {
    flex: 1;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.alert-info {
    background-color: rgba(99, 102, 241, 0.1);
    border-left: 4px solid var(--primary-color);
    color: var(--text-primary);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--success-color);
    color: var(--text-primary);
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.1);
    border-left: 4px solid var(--error-color);
    color: var(--text-primary);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--warning-color);
    color: var(--text-primary);
}

/* Grid Layout */
.grid {
    display: grid;
    gap: 1.5rem;
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Two-Column Layout */
.layout-2col {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 2rem;
}

@media (max-width: 1024px) {
    .layout-2col {
        grid-template-columns: 1fr;
    }
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

/* Image Grid */
.image-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

@media (max-width: 768px) {
    .image-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.image-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.image-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.image-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.image-card-body {
    padding: 0.75rem;
}

.image-card-caption {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.image-card-actions {
    display: flex;
    gap: 0.5rem;
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

/* Radio Group */
.radio-group {
    background-color: var(--bg-secondary);
    padding: 1rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.radio-option {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.radio-option:hover {
    background-color: var(--bg-tertiary);
}

.radio-option input[type="radio"] {
    margin-top: 0.25rem;
    accent-color: var(--primary-color);
}

.radio-option-content {
    flex: 1;
}

.radio-option-title {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.radio-option-description {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* Divider */
.divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 1.5rem 0;
}

/* Caption */
.caption {
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

/* File Upload */
.file-upload {
    background-color: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    transition: all 0.2s ease;
    cursor: pointer;
}

.file-upload:hover {
    border-color: var(--primary-color);
    background-color: var(--bg-tertiary);
}

.file-upload-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 300;
}

.file-upload-text {
    color: var(--text-secondary);
}

.file-upload input[type="file"] {
    display: none;
}

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(99, 102, 241, 0.2);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.spinner-lg {
    width: 50px;
    height: 50px;
    border-width: 5px;
}

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

/* Loading Overlay */
.loading-overlay {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    gap: 1rem;
}

.loading-text {
    color: var(--primary-color);
    font-weight: 500;
}

/* Modal */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9998;
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal {
    background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
    border: 2px solid var(--primary-color);
    border-radius: 16px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.modal-title {
    color: var(--warning-color);
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    margin-bottom: 1.5rem;
}

.modal-footer {
    display: flex;
    gap: 1rem;
}

.modal-footer .btn {
    flex: 1;
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    background-color: var(--primary-color);
    color: #FFFFFF;
}

.badge-success {
    background-color: var(--success-color);
}

.badge-warning {
    background-color: var(--warning-color);
}

/* Login Form Container */
.login-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.login-form {
    background: var(--bg-card);
    padding: 3rem 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* Section Headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* Info Box */
.info-box {
    background-color: rgba(99, 102, 241, 0.1);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
}

.info-box strong {
    color: var(--text-primary);
}

/* HTMX Loading Indicator */
.htmx-indicator {
    display: none;
}

.htmx-request .htmx-indicator {
    display: inline-flex;
}

.htmx-request.htmx-indicator {
    display: inline-flex;
}

/* Flash Messages */
.flash-messages {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
    max-width: 400px;
}

.flash-message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    animation: slideIn 0.3s ease-out;
    box-shadow: var(--shadow-lg);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-tertiary); }
.text-success { color: var(--success-color); }
.text-error { color: var(--error-color); }
.text-warning { color: var(--warning-color); }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.hidden { display: none !important; }

/* Image Card Wrapper with Overlay */
.image-card-wrapper {
    position: relative;
    cursor: pointer;
    overflow: hidden;
}

.image-card-wrapper img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.image-card-wrapper:hover img {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-card-wrapper:hover .image-overlay {
    opacity: 1;
}

.fullscreen-icon {
    color: #FFFFFF;
    font-size: 2rem;
    font-weight: bold;
}

/* Full Image Modal */
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 10000;
    display: none;
    justify-content: center;
    align-items: center;
}

.image-modal.active {
    display: flex;
}

.image-modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.image-modal-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
}

.image-modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: #FFFFFF;
    font-size: 2.5rem;
    cursor: pointer;
    padding: 0.5rem;
    line-height: 1;
    transition: color 0.2s ease;
}

.image-modal-close:hover {
    color: var(--error-color);
}

/* Generating Overlay */
.generating-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.95);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

.generating-content {
    text-align: center;
    padding: 3rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.generating-content .spinner-lg {
    margin: 0 auto 1.5rem;
}

.generating-content .loading-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.generating-content .caption {
    margin: 0;
}