/* ===================================
   Dashboard Layout
   =================================== */
.dashboard-page {
    display: flex;
    min-height: 100vh;
    background: var(--color-bg);
}

/* ===================================
   Sidebar
   =================================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    display: flex;
    flex-direction: column;
    background: var(--color-bg-elevated);
    border-right: 1px solid var(--color-border);
    z-index: 100;
}

.sidebar-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-item:hover {
    background: var(--color-bg-card);
    color: var(--color-text);
}

.nav-item.active {
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-primary-hover);
}

.nav-item svg {
    flex-shrink: 0;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--color-border);
}

.credits-display {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
}

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

.credits-value {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    border-radius: var(--radius-lg);
    color: var(--color-text);
    transition: background var(--transition-fast);
}

.user-btn:hover {
    background: var(--color-bg-card);
}

.user-avatar {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
}

.user-name {
    flex: 1;
    text-align: left;
    font-size: 0.9375rem;
    font-weight: 500;
}

.user-dropdown {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    margin-bottom: var(--space-sm);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
}

.user-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    text-align: left;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--color-bg-card-hover);
    color: var(--color-text);
}

/* ===================================
   Main Content
   =================================== */
.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
}

/* Dashboard Header */
.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-xl);
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.mobile-sidebar-btn {
    display: none;
    padding: var(--space-sm);
    color: var(--color-text);
}

.dashboard-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.credits-badge {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    color: var(--color-primary-hover);
    font-size: 0.875rem;
    font-weight: 500;
}

/* ===================================
   Upload Section
   =================================== */
.upload-section {
    padding: var(--space-xl);
}

.upload-area {
    position: relative;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-4xl) var(--space-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    background: var(--color-bg-card);
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--color-primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-area.dragover {
    transform: scale(1.01);
}

.upload-content {
    pointer-events: none;
}

.upload-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin-bottom: var(--space-lg);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-xl);
    color: var(--color-primary-hover);
}

.upload-area h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.upload-area p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.upload-hint {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* ===================================
   Preview Section
   =================================== */
.preview-section {
    padding: var(--space-xl);
}

.preview-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xl);
}

.preview-card {
    position: relative;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    max-width: 600px;
    width: 100%;
}

.preview-label {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: var(--space-xs) var(--space-md);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.preview-image-wrapper {
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
}

.preview-image-wrapper img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.preview-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.credit-cost {
    opacity: 0.7;
    font-size: 0.875rem;
}

/* ===================================
   Processing Section
   =================================== */
.processing-section {
    padding: var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

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

.processing-animation {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-xl);
}

.processing-ring {
    position: absolute;
    inset: 0;
    border: 2px solid transparent;
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1.5s linear infinite;
}

.processing-ring:nth-child(2) {
    inset: 10px;
    border-top-color: var(--color-accent);
    animation-duration: 2s;
    animation-direction: reverse;
}

.processing-ring:nth-child(3) {
    inset: 20px;
    border-top-color: var(--color-primary-hover);
    animation-duration: 2.5s;
}

.processing-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-primary-hover);
}

.processing-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.processing-content > p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

.processing-steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    text-align: left;
    max-width: 200px;
    margin: 0 auto;
}

.processing-steps .step {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.processing-steps .step.active {
    color: var(--color-text);
}

.processing-steps .step.done {
    color: var(--color-success);
}

.step-indicator {
    width: 8px;
    height: 8px;
    background: var(--color-border);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.step.active .step-indicator {
    background: var(--color-primary);
    box-shadow: 0 0 10px var(--color-primary-glow);
    animation: pulse 1s infinite;
}

.step.done .step-indicator {
    background: var(--color-success);
}

/* ===================================
   Result Section
   =================================== */
.result-section {
    padding: var(--space-xl);
}

.result-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xl);
}

/* Comparison Slider */
.comparison-slider {
    position: relative;
    width: 100%;
    max-width: 700px;
    aspect-ratio: 4/3;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    cursor: ew-resize;
    background: var(--color-bg-card);
}

.comparison-image {
    position: absolute;
    inset: 0;
}

.comparison-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--color-bg);
}

.comparison-image.before {
    clip-path: inset(0 50% 0 0);
}

.comparison-image.after {
    clip-path: inset(0 0 0 50%);
}

.comparison-label {
    position: absolute;
    bottom: var(--space-md);
    padding: var(--space-xs) var(--space-md);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.comparison-image.before .comparison-label {
    left: var(--space-md);
}

.comparison-image.after .comparison-label {
    right: var(--space-md);
}

.comparison-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 4px;
    cursor: ew-resize;
    z-index: 10;
}

.handle-line {
    flex: 1;
    width: 2px;
    background: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.handle-circle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    color: var(--color-bg);
}

.handle-circle svg {
    width: 16px;
    height: 16px;
}

.result-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

/* ===================================
   History Section
   =================================== */
.history-section {
    padding: var(--space-xl);
    border-top: 1px solid var(--color-border);
    margin-top: auto;
}

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

.section-header-inline h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.history-count {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.history-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md);
}

.history-item {
    position: relative;
    aspect-ratio: 4/3;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.history-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.history-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.history-item-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-fast);
    display: flex;
    align-items: flex-end;
    padding: var(--space-md);
}

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

.history-item-date {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.history-item-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.history-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.history-item-placeholder {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.history-item-error {
    font-size: 0.75rem;
    color: var(--color-error);
}

.history-item-status {
    margin-left: auto;
    font-size: 0.625rem;
    padding: 2px 6px;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    font-weight: 600;
}

.history-item-status.pending {
    background: rgba(251, 191, 36, 0.2);
    color: var(--color-warning);
}

.history-item-status.processing {
    background: rgba(99, 102, 241, 0.2);
    color: var(--color-primary-hover);
}

.history-item-status.failed {
    background: rgba(239, 68, 68, 0.2);
    color: var(--color-error);
}

.history-empty {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl);
    text-align: center;
    color: var(--color-text-muted);
}

.history-empty svg {
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.history-empty p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.history-empty span {
    font-size: 0.875rem;
}

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

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    animation: slideIn 0.3s ease;
}

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

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

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

.toast-icon {
    flex-shrink: 0;
}

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

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

.toast-message {
    font-size: 0.9375rem;
}

/* ===================================
   Responsive
   =================================== */
@media (max-width: 900px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .mobile-sidebar-btn {
        display: block;
    }
}

@media (max-width: 600px) {
    .dashboard-header {
        padding: var(--space-md);
    }
    
    .upload-section,
    .preview-section,
    .processing-section,
    .result-section,
    .history-section {
        padding: var(--space-md);
    }
    
    .upload-area {
        padding: var(--space-2xl) var(--space-md);
    }
    
    .history-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .toast-container {
        left: var(--space-md);
        right: var(--space-md);
        bottom: var(--space-md);
    }
}