/* ============================================
   Hedgehog Generator - Modern Gallery Design
   ============================================ */

:root {
    /* Modern Color Palette */
    --primary: #5c8a4d;           /* Muted sage green */
    --primary-hover: #4a7340;     /* Darker green on hover */
    --primary-light: rgba(92, 138, 77, 0.15);
    --primary-glow: rgba(92, 138, 77, 0.4);
    --secondary: #c9a86c;         /* Muted gold */
    --accent: #6b9b5a;            /* Light green accent */
    --accent-warm: #d4a84b;       /* Warm gold accent */
    
    /* Neutral Colors - Cool dark grays */
    --background: #1e2420;
    --background-gradient: linear-gradient(135deg, #1e2420 0%, #252b27 50%, #1e2420 100%);
    --surface: rgba(42, 48, 44, 0.9);
    --surface-solid: #2a302c;
    --surface-elevated: rgba(52, 60, 54, 0.95);
    --surface-glass: rgba(255, 255, 255, 0.03);
    --border: rgba(100, 120, 105, 0.25);
    --border-subtle: rgba(255, 255, 255, 0.08);
    
    /* Text Colors */
    --text-primary: #f5f5f5;
    --text-secondary: #c8cec9;
    --text-muted: #8a9b8e;
    --text-dim: #5c6b60;
    
    /* Status Colors */
    --error: #e85c5c;
    --success: #5cb85c;
    --info: #5c9be8;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(92, 138, 77, 0.2);
    --shadow-glow-strong: 0 0 50px rgba(92, 138, 77, 0.35);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: var(--background);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    /* background: var(--background-gradient); */
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    min-height: -webkit-fill-available;
    position: relative;
    overflow-x: hidden;
}

/* Ambient Background Effects */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(124, 179, 66, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(232, 163, 60, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(245, 166, 35, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
    animation: ambientFloat 30s ease-in-out infinite;
}

@keyframes ambientFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, 1%) rotate(1deg); }
    66% { transform: translate(-1%, 2%) rotate(-1deg); }
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
}

/* Shared Header Wrapper - make sticky work from wrapper */
#shared-header {
    position: sticky;
    top: 0;
    z-index: 100;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-2xl);
    background: rgba(30, 36, 32, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-icon {
    height: 3.5rem;
    width: auto;
    filter: drop-shadow(0 0 8px rgba(92, 138, 77, 0.4));
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.nav {
    display: flex;
    gap: var(--spacing-xs);
    background: transparent;
    padding: 4px;
    border-radius: var(--radius-full);
    border: none;
}

.nav-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-weight: 500;
    font-size: 0.875rem;
}

.nav-btn:hover {
    color: var(--text-primary);
    background: var(--surface-glass);
}

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

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--spacing-2xl);
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

/* Views */
.view {
    display: none;
}

.view.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Generate Layout */
.generate-layout {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

@media (max-width: 1024px) {
    .generate-layout {
        grid-template-columns: 1fr;
        display: flex;
        flex-direction: column-reverse;
        gap: var(--spacing-xl);
    }
    
    .control-panel,
    .image-panel {
        width: 100%;
        max-width: 600px;
        margin: 0 auto;
    }
}

/* Control Panel */
.control-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.panel-section {
    background: var(--surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.panel-section:hover {
    border-color: rgba(139, 110, 85, 0.5);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.panel-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Prompt Section */
.prompt-section {
    margin-bottom: var(--spacing-lg);
}

.prompt-section label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.prompt-container {
    position: relative;
}

#prompt-input {
    width: 100%;
    padding: var(--spacing-lg);
    background: var(--surface-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
    min-height: 120px;
    transition: all var(--transition-normal);
    line-height: 1.6;
}

#prompt-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-light), var(--shadow-glow);
}

#prompt-input::placeholder {
    color: var(--text-dim);
}

/* Upload Drop Zone */
.upload-dropzone {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface-glass);
    transition: all var(--transition-normal);
}

.upload-dropzone.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.upload-dropzone.has-file .dropzone-content {
    display: none;
}

.upload-dropzone.has-file.can-add-more .dropzone-content {
    display: flex;
    padding: var(--spacing-xs) 0;
    border-top: 1px solid var(--border);
    margin-top: var(--spacing-sm);
}

.upload-dropzone.has-file.can-add-more .dropzone-icon,
.upload-dropzone.has-file.can-add-more .dropzone-text {
    display: none;
}

.dropzone-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.dropzone-icon {
    width: 20px;
    height: 20px;
    filter: brightness(0) invert(0.65) sepia(0.15) hue-rotate(90deg);
}

.dropzone-text {
    color: var(--text-muted);
}

.dropzone-btn {
    background: none;
    border: none;
    color: var(--secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    padding: 0;
    transition: color var(--transition-fast);
}

.dropzone-btn:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* Upload Preview Grid */
.upload-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: var(--spacing-sm);
}

.upload-preview-grid.hidden {
    display: none;
}

.upload-preview-item {
    position: relative;
    aspect-ratio: 1;
}

.upload-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.upload-preview-item .remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    background: rgba(0, 0, 0, 0.7);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 0.75rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.upload-preview-item:hover .remove-btn {
    opacity: 1;
}

.upload-preview-item .remove-btn:hover {
    background: var(--error);
}

.upload-count {
    margin-top: var(--spacing-sm);
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
}

/* Settings */
.settings-section {
    margin-bottom: var(--spacing-xl);
}

.settings-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

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

.setting-item label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.setting-item select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23a89070'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    background-size: 1.25rem;
    padding-right: 2rem;
}

.setting-item select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* Toggle Switches */
.settings-toggles {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.toggle-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.toggle-item input[type="checkbox"] {
    display: none;
}

.toggle-switch {
    width: 44px;
    height: 24px;
    background: var(--surface-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    position: relative;
    transition: all var(--transition-fast);
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.toggle-item input[type="checkbox"]:checked + .toggle-switch {
    background: var(--primary);
    border-color: var(--primary);
}

.toggle-item input[type="checkbox"]:checked + .toggle-switch::after {
    left: 22px;
    background: white;
}

.toggle-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Generate Button */
.generate-btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.generate-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.generate-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.generate-btn:hover:not(:disabled)::before {
    opacity: 1;
}

.generate-btn:active:not(:disabled) {
    transform: translateY(0);
}

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

.btn-loading {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-loading.hidden,
.btn-text.hidden {
    display: none;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Conversation Panel */
.conversation-panel.hidden {
    display: none;
}

.conversation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.conversation-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.new-session-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    color: var(--text-muted);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.new-session-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.conversation-history {
    max-height: 300px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding-right: var(--spacing-sm);
}

.conversation-history::-webkit-scrollbar {
    width: 6px;
}

.conversation-history::-webkit-scrollbar-track {
    background: transparent;
}

.conversation-history::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: var(--radius-full);
}

.message {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    line-height: 1.5;
}

.message.user {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    align-self: flex-end;
    max-width: 85%;
    border-bottom-right-radius: var(--radius-sm);
}

.message.assistant {
    background: var(--surface-elevated);
    color: var(--text-secondary);
    align-self: flex-start;
    max-width: 85%;
    border: 1px solid var(--border-subtle);
    border-bottom-left-radius: var(--radius-sm);
}

/* Image Panel */
.image-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    align-items: center;
}

.image-display {
    background: var(--surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    min-height: 550px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    width: 100%;
}

.image-display:has(img:not(.empty-icon):not(.nav-icon)) {
    width: fit-content;
    max-width: 100%;
}

.image-display:hover {
    border-color: rgba(139, 110, 85, 0.5);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.image-display img {
    max-width: 100%;
    max-height: 75vh;
    object-fit: contain;
    display: block;
    background: repeating-conic-gradient(
        rgba(128, 128, 128, 0.15) 0% 25%,
        transparent 0% 50%
    ) 50% / 20px 20px;
}

/* Image Loading Overlay */
.image-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 21, 18, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 10;
    border-radius: var(--radius-2xl);
}

.image-loading-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.overlay-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.overlay-text {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
}

.image-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(26, 21, 18, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-size: 0.875rem;
    line-height: 1.5;
    text-align: center;
    border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.image-caption .caption-text {
    flex: 1;
    text-align: left;
}

.image-caption .original-link {
    color: var(--secondary);
    text-decoration: none;
    white-space: nowrap;
    transition: color var(--transition-fast);
}

.image-caption .original-link:hover {
    color: var(--accent);
    text-decoration: underline;
}

.empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
}

.empty-icon {
    width: 64px;
    height: 64px;
    display: block;
    margin: 0 auto var(--spacing-lg);
    opacity: 0.4;
    filter: brightness(0) invert(1);
}

.empty-state h3 {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 600;
}

.empty-state p {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

/* Image Actions */
.image-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.image-actions.hidden {
    display: none;
}

.image-actions-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Edit View Reactions */
.edit-reactions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
}

.edit-reactions-display {
    display: flex;
    gap: var(--spacing-xs);
}

.edit-reactions-picker {
    display: flex;
    gap: var(--spacing-xs);
    padding-left: var(--spacing-sm);
    border-left: 1px solid var(--border);
}

.edit-reactions-picker:empty {
    display: none;
}

.edit-reactions-display:empty + .edit-reactions-picker {
    padding-left: 0;
    border-left: none;
}

.action-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--surface);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9375rem;
    font-weight: 500;
}

.action-btn .btn-icon {
    width: 18px;
    height: 18px;
    filter: brightness(0) invert(1);
}

.action-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.action-btn:hover .btn-icon {
    filter: brightness(0) invert(1);
}

/* Analysis Panel */
.analysis-panel {
    background: var(--surface);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.analysis-panel.hidden {
    display: none;
}

.analysis-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.analysis-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.close-btn,
.remove-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--surface-elevated);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.close-btn:hover,
.remove-btn:hover {
    background: var(--error);
    border-color: var(--error);
    color: white;
}

.close-btn-icon {
    width: 16px;
    height: 16px;
    filter: brightness(0) invert(0.65) sepia(0.15) hue-rotate(90deg);
}

.close-btn:hover .close-btn-icon {
    filter: brightness(0) invert(1);
}

.analysis-content {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    white-space: pre-wrap;
}

.suggested-edits {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.edit-suggestion {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--surface-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.edit-suggestion:hover {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-color: transparent;
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

/* Gallery */
.gallery-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.gallery-header h2 {
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.gallery-filters {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.reaction-filter {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs);
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.8125rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.filter-btn img {
    width: 20px;
    height: 20px;
    object-fit: contain;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.filter-btn:hover {
    background: var(--surface-elevated);
    color: var(--text-primary);
}

.filter-btn:hover img {
    opacity: 1;
}

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

.filter-btn.active img {
    opacity: 1;
}

.refresh-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.refresh-btn .btn-icon {
    width: 16px;
    height: 16px;
    filter: brightness(0) invert(0.65) sepia(0.15) hue-rotate(90deg);
}

.refresh-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.refresh-btn:hover .btn-icon {
    filter: brightness(0) invert(1);
}

.gallery-grid {
    position: relative;
    min-height: 200px;
    contain: layout;
}

.gallery-item {
    position: absolute;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    contain: layout style;
    will-change: transform;
}

/* Gallery Tags */
.gallery-tag {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    z-index: 5;
    pointer-events: none;
}

.gallery-tag.original {
    background: var(--primary);
    color: white;
}

/* Gallery Loading Indicator */
.gallery-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-3xl);
    color: var(--text-muted);
}

.gallery-loader.hidden {
    display: none;
}

.gallery-loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Gallery Item Loading State */
.gallery-item.loading {
    opacity: 0;
}

.gallery-item.loaded {
    opacity: 1;
    transition: opacity 0.3s ease;
}

.gallery-item::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 1;
    pointer-events: none;
}

.gallery-item:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.gallery-item:hover::before {
    opacity: 1;
}

.gallery-item img {
    display: block;
    width: 100%;
    height: auto;
    transition: transform var(--transition-slow);
    background: repeating-conic-gradient(
        rgba(128, 128, 128, 0.15) 0% 25%,
        transparent 0% 50%
    ) 50% / 16px 16px;
}

.gallery-item:hover img {
    transform: scale(1.03);
}

.gallery-item-info {
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(to top, rgba(30, 36, 32, 0.95), rgba(30, 36, 32, 0.8));
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.gallery-item-info p {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.gallery-item-info span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Reactions System */
.reactions-bar {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 32px;
    padding: var(--spacing-xs) var(--spacing-sm);

}

.reactions-display {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-xs);
}

.reaction-count {
    display: flex;
    align-items: center;
    gap: 2px;
    background: transparent;
    border-radius: var(--radius-full);
    padding: 2px 6px 2px 2px;
    font-size: 0.75rem;
    color: var(--text-primary);
}

.reaction-count img {
    width: 18px;
    height: 18px;
    object-fit: contain;
}

.reaction-count span {
    font-weight: 600;
    min-width: 12px;
    text-align: center;
}

.reaction-pop {
    animation: reactionPop 0.3s ease;
}

@keyframes reactionPop {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.reactions-picker {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: var(--spacing-sm);
    display: none;
    gap: var(--spacing-xs);
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    padding: var(--spacing-xs) var(--spacing-sm);
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.gallery-item:hover .reactions-picker {
    display: flex;
}

.reaction-btn {
    width: 36px;
    height: 36px;
    padding: 4px;
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.reaction-btn:hover {
    background: var(--primary-light);
    transform: scale(1.2);
}

.reaction-btn:active {
    transform: scale(0.95);
}

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

.gallery-empty {
    text-align: center;
    padding: var(--spacing-3xl);
}

.gallery-empty.hidden {
    display: none;
}

/* Gallery Infinite Scroll Indicator */
.gallery-load-more {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xl);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.gallery-load-more.hidden {
    display: none;
}

.gallery-load-more .loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Gallery Nav Buttons (prev/next overlay on image) */
.image-display-column {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    width: 100%;
}

.gallery-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(30, 36, 32, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: white;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 5;
    opacity: 0;
}

.image-display:hover .gallery-nav-btn:not(.hidden):not(:disabled) {
    opacity: 1;
}

.gallery-nav-prev {
    left: var(--spacing-sm);
    padding-right: 2px;
}

.gallery-nav-next {
    right: var(--spacing-sm);
    padding-left: 2px;
}

.gallery-nav-btn .nav-icon {
    width: 20px;
    height: 20px;
    filter: brightness(0) invert(1);
}

.gallery-nav-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-50%) scale(1.1);
}

.gallery-nav-btn:active {
    transform: translateY(-50%) scale(0.95);
}

.gallery-nav-btn:disabled {
    opacity: 0 !important;
    cursor: not-allowed;
}

.gallery-nav-btn.hidden {
    display: none;
}

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

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    z-index: 1000;
}

.toast {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--surface-solid);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: slideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    max-width: 400px;
}

.toast-icon {
    font-size: 1.25rem;
}

.toast-message {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.toast.success {
    border-color: var(--success);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(52, 211, 153, 0.2);
}

.toast.success .toast-icon {
    color: var(--success);
}

.toast.error {
    border-color: var(--error);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(244, 63, 94, 0.2);
}

.toast.error .toast-icon {
    color: var(--error);
}

.toast.info {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(124, 179, 66, 0.2);
}

.toast.info .toast-icon {
    color: var(--primary);
}

@keyframes slideIn {
    from {
        transform: translateX(120%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Lightbox Overlay */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    cursor: zoom-out;
}

.lightbox-overlay.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-overlay img {
    max-width: 95vw;
    max-height: 95vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: 0 0 60px rgba(0, 0, 0, 0.5);
    cursor: default;
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 2001;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.lightbox-close-icon {
    width: 20px;
    height: 20px;
    filter: brightness(0) invert(1);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-dim);
}

/* Responsive */
@media (max-width: 1024px) {
    .image-display {
        min-height: auto;
        flex-direction: column;
    }
    
    .image-actions {
        gap: var(--spacing-sm);
    }
    
    .action-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.8125rem;
        gap: var(--spacing-xs);
    }
    
    .image-caption {
        position: relative;
        border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
        width: 100%;
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: var(--spacing-lg);
        padding: var(--spacing-md);
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .image-actions {
        flex-wrap: wrap;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--spacing-md);
    }
    
    .generate-layout {
        gap: var(--spacing-lg);
    }
    
    .panel-section {
        padding: var(--spacing-lg);
    }
}

/* ============================================
   Mask Painter / Inpainting
   ============================================ */

/* Canvas overlay sits on top of the displayed image */
.mask-canvas {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 10;
    touch-action: none;          /* prevent scrolling while drawing */
    pointer-events: auto;
}

/* When mask mode is active, disable click-to-zoom on the image */
.image-display.mask-active img {
    pointer-events: none;
    cursor: default;
}

/* ── Mask toolbar ──────────────────────────── */

.mask-toolbar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.mask-toolbar.hidden {
    display: none;
}

.mask-toolbar-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.mask-size-group {
    gap: var(--spacing-sm);
}

.mask-size-group label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.mask-size-group input[type="range"] {
    width: 100px;
    accent-color: var(--primary);
}

.mask-tool-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    font-size: 0.8rem;
    font-family: inherit;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.mask-tool-btn:hover {
    background: var(--surface-elevated);
    color: var(--text-primary);
}

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

.mask-tool-icon {
    font-size: 1rem;
    line-height: 1;
}

.mask-btn-icon {
    font-size: 1rem;
    line-height: 1;
    display: inline-flex;
    align-items: center;
}

/* Mobile adjustments for mask toolbar */
@media (max-width: 600px) {
    .mask-toolbar {
        gap: var(--spacing-sm);
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .mask-size-group input[type="range"] {
        width: 70px;
    }

    .mask-tool-btn {
        padding: 4px 8px;
        font-size: 0.75rem;
    }
}