/* Modern CSS Variables */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --success-gradient: linear-gradient(135deg, #81FBB8 0%, #28C76F 100%);
    --warning-gradient: linear-gradient(135deg, #FFD93D 0%, #FF6B6B 100%);

    --bg-primary: #0a0a0b;
    --bg-secondary: #151519;
    --bg-tertiary: #1e1e24;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-glass: rgba(255, 255, 255, 0.1);

    --text-primary: #ffffff;
    --text-secondary: #b0b3c1;
    --text-muted: #6c7293;

    --border-color: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.3);

    --border-radius: 16px;
    --border-radius-sm: 8px;
    --border-radius-lg: 24px;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Background Elements */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(240, 147, 251, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 40% 80%, rgba(79, 172, 254, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

.floating-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.shape {
    position: absolute;
    background: var(--primary-gradient);
    border-radius: 50%;
    animation: float 20s infinite linear;
    opacity: 0.1;
}

.shape-1 {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 10%;
    animation-delay: -5s;
}

.shape-3 {
    width: 80px;
    height: 80px;
    bottom: 20%;
    left: 20%;
    animation-delay: -10s;
}

.shape-4 {
    width: 120px;
    height: 120px;
    top: 10%;
    right: 30%;
    animation-delay: -15s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(90deg); }
    50% { transform: translateY(0) rotate(180deg); }
    75% { transform: translateY(20px) rotate(270deg); }
}

/* Container */
.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0 6rem;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo i {
    font-size: 2rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.api-status {
    display: flex;
    align-items: center;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    backdrop-filter: blur(10px);
    transition: var(--transition-fast);
}

.status-indicator.online {
    border-color: #28C76F;
    box-shadow: 0 0 20px rgba(40, 199, 111, 0.2);
}

.status-indicator.offline {
    border-color: #FF6B6B;
    box-shadow: 0 0 20px rgba(255, 107, 107, 0.2);
}

.status-indicator i {
    font-size: 0.75rem;
}

.status-indicator.online i {
    color: #28C76F;
    animation: pulse 2s infinite;
}

.status-indicator.offline i {
    color: #FF6B6B;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Main Content */
.main-content {
    padding: 2rem 0;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease-out;
}

.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.gradient-text::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: 2px;
    animation: expandWidth 1.5s ease-out 0.5s both;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 1s ease-out 0.2s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes expandWidth {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

/* Services Section */
.services {
    width: 100%;
    margin: 0 auto;
}

.service-tabs {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
    margin-bottom: 2rem;
    padding: 0.5rem;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

.tab-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.tab-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition-fast);
    z-index: -1;
}

.tab-item:hover {
    color: var(--text-primary);
    transform: translateY(-1px);
}

.tab-item:hover::before {
    opacity: 0.1;
}

.tab-item.active {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.tab-item.active::before {
    opacity: 1;
}

.tab-item i {
    font-size: 1rem;
}

/* Main Layout with Sidebar */
.main-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2rem;
    align-items: start;
    margin-top: 2rem;
    padding: 0 6rem;
}

/* Workspace */
.workspace {
    transition: var(--transition-normal);
    scroll-margin-bottom: 20px;
}

.workspace.focused {
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.3);
    border-radius: var(--border-radius-lg);
}

.service-interface {
    display: none;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    animation: slideInUp 0.5s ease-out;
}

.service-interface.active {
    display: block;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.interface-header {
    text-align: center;
    margin-bottom: 3rem;
}

.interface-header h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.interface-header h2 i {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.interface-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.interface-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

/* Form Elements */
.input-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.prompt-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

input, textarea {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 0.875rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-fast);
    resize: vertical;
}

input:focus, textarea:focus {
    outline: none;
    border-color: rgba(102, 126, 234, 0.5);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

input::placeholder, textarea::placeholder {
    color: var(--text-muted);
}

/* File Upload */
.upload-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.upload-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.file-drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-fast);
    background: var(--bg-tertiary);
    position: relative;
}

.file-drop-zone:hover {
    border-color: var(--border-hover);
    background: var(--bg-glass);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.file-drop-zone.drag-over {
    border-color: rgba(102, 126, 234, 0.5);
    background: rgba(102, 126, 234, 0.1);
    transform: scale(1.02);
}

.file-drop-zone i {
    font-size: 2rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    display: block;
}

.file-drop-zone p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.file-drop-zone.has-file {
    border-color: #28C76F;
    background: rgba(40, 199, 111, 0.1);
}

.file-drop-zone.has-file i {
    color: #28C76F;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

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

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-fast);
}

.btn:hover:not(:disabled)::before {
    left: 100%;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover:not(:disabled) {
    border-color: var(--border-hover);
    background: var(--bg-glass);
    transform: translateY(-1px);
}

.prompt-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Output Section */
.output-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.image-preview {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.image-preview h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: center;
}

.preview-placeholder {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    text-align: center;
}

.preview-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.preview-image {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-sm);
    object-fit: contain;
    max-height: 400px;
}

.image-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

/* Image Gallery Sidebar */
.image-gallery-sidebar {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    backdrop-filter: blur(20px);
    position: sticky;
    top: 100px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-header h3 i {
    color: #667eea;
}

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

.sidebar-content {
    flex: 1;
    max-height: 490px;
    overflow-y: auto;
    padding: 1rem;
}

.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 2rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: 1.5rem;
}

.upload-zone:hover {
    border-color: #667eea;
    background: rgba(102, 126, 234, 0.05);
}

.upload-zone.drag-over {
    border-color: #667eea;
    background: rgba(102, 126, 234, 0.1);
    transform: scale(1.02);
}

.upload-zone i {
    font-size: 2rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.upload-zone p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.sidebar-content .image-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.image-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

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

.image-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all var(--transition-fast);
}

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

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        transparent 60%,
        rgba(0, 0, 0, 0.8) 100%
    );
    opacity: 0;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 0.75rem;
}

.image-item:hover .image-overlay {
    opacity: 1;
}

.image-service-type {
    background: var(--primary-gradient);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 500;
    width: fit-content;
    margin-bottom: 0.25rem;
}

.image-timestamp {
    opacity: 0.8;
    font-size: 0.7rem;
    color: white;
}

.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state p {
    font-size: 0.9rem;
}

.image-item.dragging {
    opacity: 0.5;
    transform: scale(0.95);
}

.drop-zone-active {
    border-color: #28C76F !important;
    background: rgba(40, 199, 111, 0.1) !important;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 11, 0.9);
    backdrop-filter: blur(10px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-overlay.active {
    display: flex;
}

.loading-content {
    text-align: center;
    padding: 2rem;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 3px solid var(--border-color);
    border-top: 3px solid transparent;
    border-radius: 50%;
    margin: 0 auto 2rem;
    background: var(--primary-gradient);
    animation: spin 1s linear infinite;
}

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

.loading-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.loading-content p {
    color: var(--text-secondary);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem 1.5rem;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 300px;
    animation: slideInRight 0.3s ease-out;
}

.toast.success {
    border-color: #28C76F;
    box-shadow: 0 8px 40px rgba(40, 199, 111, 0.2);
}

.toast.error {
    border-color: #FF6B6B;
    box-shadow: 0 8px 40px rgba(255, 107, 107, 0.2);
}

.toast.warning {
    border-color: #FFD93D;
    box-shadow: 0 8px 40px rgba(255, 217, 61, 0.2);
}

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

.toast.success i { color: #28C76F; }
.toast.error i { color: #FF6B6B; }
.toast.warning i { color: #FFD93D; }

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

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

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 0.25rem;
    border-radius: 4px;
    transition: var(--transition-fast);
}

.toast-close:hover {
    color: var(--text-primary);
    background: var(--bg-glass);
}

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

/* Responsive Design */
@media (max-width: 1200px) {
    .main-layout {
        grid-template-columns: 1fr 300px;
        gap: 1.5rem;
    }
}

@media (max-width: 1024px) {
    .interface-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .image-comparison,
    .upload-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 968px) {
    .main-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 1rem;
    }

    .image-gallery-sidebar {
        position: static;
        height: auto;
    }

    .sidebar-content {
        max-height: none;
    }

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

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .hero {
        padding: 2rem 0 3rem;
    }

    .service-tabs {
        grid-template-columns: 1fr 1fr;
        gap: 0.25rem;
    }

    .tab-item {
        justify-content: center;
        padding: 1rem;
        font-size: 0.75rem;
    }

    .service-interface {
        padding: 1.5rem;
    }

    .prompt-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

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

    .toast-container {
        top: 1rem;
        right: 1rem;
        left: 1rem;
    }

    .toast {
        min-width: auto;
    }

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

@media (max-width: 480px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }

    .logo {
        font-size: 1.25rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .service-tabs {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }

    .service-interface {
        padding: 1rem;
    }

    .interface-header h2 {
        font-size: 1.5rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .sidebar-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

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

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

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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

/* Selection */
::selection {
    background: rgba(102, 126, 234, 0.3);
    color: var(--text-primary);
}

/* Focus visible */
.btn:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid rgba(102, 126, 234, 0.5);
    outline-offset: 2px;
}