/*
 * UltraCloud WorkSpace - Premium Luxury Design System
 * Version: 3.0.0
 * Inspired by: Notion, Linear, Arc Browser, Vercel
 */

/* === Google Fonts === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* === Light Color Palette === */
    --uc-bg-primary: #ffffff;
    --uc-bg-secondary: #f8f9fa;
    --uc-bg-tertiary: #f1f3f5;
    --uc-bg-glass: rgba(255, 255, 255, 0.95);
    --uc-bg-glass-hover: rgba(255, 255, 255, 1);
    --uc-bg-glass-active: rgba(248, 249, 250, 1);

    /* Text Colors - Dark Blue */
    --uc-text-primary: #1a2332;
    --uc-text-secondary: #4a5568;
    --uc-text-muted: #718096;
    --uc-text-inverse: #ffffff;

    /* Borders */
    --uc-border-subtle: rgba(0, 0, 0, 0.08);
    --uc-border-highlight: rgba(0, 0, 0, 0.15);
    --uc-border-strong: rgba(0, 0, 0, 0.25);

    /* === Vibrant Gradients === */
    --uc-gradient-cosmic: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --uc-gradient-ocean: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --uc-gradient-sunset: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --uc-gradient-forest: linear-gradient(135deg, #0ba360 0%, #3cba92 100%);
    --uc-gradient-sky: linear-gradient(135deg, #84fab0 0%, #8fd3f4 100%);
    --uc-gradient-fire: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --uc-gradient-aurora: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);

    /* Accent Colors */
    --uc-accent-primary: #2563eb;
    --uc-accent-secondary: #7c3aed;
    --uc-accent-success: #10b981;
    --uc-accent-warning: #f59e0b;
    --uc-accent-danger: #ef4444;
    --uc-accent-info: #3b82f6;

    /* Glows */
    --uc-glow-primary: rgba(37, 99, 235, 0.3);
    --uc-glow-success: rgba(16, 185, 129, 0.3);
    --uc-glow-danger: rgba(239, 68, 68, 0.3);
    --uc-glow-cosmic: rgba(102, 126, 234, 0.3);

    /* === Effects === */
    --uc-blur-sm: blur(8px);
    --uc-blur-md: blur(12px);
    --uc-blur-lg: blur(20px);
    --uc-blur-xl: blur(40px);

    /* Shadows - Subtle for light theme */
    --uc-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --uc-shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
    --uc-shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.10);
    --uc-shadow-xl: 0 8px 24px rgba(0, 0, 0, 0.12);
    --uc-shadow-glow: 0 0 20px var(--uc-glow-primary);
    --uc-shadow-glow-lg: 0 0 40px var(--uc-glow-cosmic);

    /* Border Radius */
    --uc-radius-sm: 6px;
    --uc-radius-md: 10px;
    --uc-radius-lg: 16px;
    --uc-radius-xl: 24px;
    --uc-radius-full: 9999px;

    /* Spacing */
    --uc-space-xs: 4px;
    --uc-space-sm: 8px;
    --uc-space-md: 16px;
    --uc-space-lg: 24px;
    --uc-space-xl: 32px;
    --uc-space-2xl: 48px;

    /* Typography */
    --uc-font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --uc-font-mono: 'JetBrains Mono', 'Courier New', monospace;

    /* Transitions */
    --uc-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --uc-transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --uc-transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --uc-transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* === Global Resets & Base === */
.ultracloud-workspace * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.ultracloud-workspace {
    font-family: var(--uc-font-main);
    max-width: 100%;
    margin: 0;
    padding: var(--uc-space-sm);
    background: var(--uc-bg-primary);
    color: var(--uc-text-primary);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Desktop - add margin and padding */
@media (min-width: 768px) {
    .ultracloud-workspace {
        max-width: 1400px;
        margin: 0 auto;
        padding: var(--uc-space-xl);
    }
}

/* === Header === */
.ultracloud-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--uc-space-xl);
    padding-bottom: var(--uc-space-lg);
    border-bottom: 1px solid var(--uc-border-subtle);
    gap: var(--uc-space-lg);
    flex-wrap: wrap;
}

.ultracloud-header-left {
    flex: 1;
    min-width: 250px;
}

.ultracloud-workspace h2 {
    font-size: 36px;
    font-weight: 800;
    background: var(--uc-gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 0 var(--uc-space-xs) 0;
    letter-spacing: -1px;
    line-height: 1.2;
}

.ultracloud-workspace h2::before {
    content: '☁️';
    margin-right: var(--uc-space-sm);
    filter: drop-shadow(0 0 8px var(--uc-glow-primary));
}

.ultracloud-header p {
    color: var(--uc-text-secondary);
    font-size: 15px;
    font-weight: 500;
}

/* === Premium Buttons === */
.uc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--uc-space-sm);
    padding: 12px 24px;
    border-radius: var(--uc-radius-md);
    font-family: var(--uc-font-main);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    outline: none;
    transition: all var(--uc-transition-base);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.uc-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.uc-btn:hover::before {
    width: 300px;
    height: 300px;
}

.uc-btn-primary,
#ultracloud-create {
    background: var(--uc-gradient-ocean);
    color: white;
    box-shadow: 0 4px 15px var(--uc-glow-primary);
}

.uc-btn-primary:hover,
#ultracloud-create:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--uc-glow-primary);
}

.uc-btn-secondary {
    background: var(--uc-bg-glass);
    -webkit-backdrop-filter: var(--uc-blur-md);
    backdrop-filter: var(--uc-blur-md);
    color: var(--uc-text-primary);
    border: 1px solid var(--uc-border-highlight);
}

.uc-btn-secondary:hover {
    background: var(--uc-bg-glass-hover);
    border-color: var(--uc-border-strong);
}

.uc-btn-success {
    background: var(--uc-gradient-forest);
    color: white;
    box-shadow: 0 4px 15px var(--uc-glow-success);
}

.uc-btn-danger {
    background: var(--uc-gradient-sunset);
    color: white;
    box-shadow: 0 4px 15px var(--uc-glow-danger);
}

.uc-btn-icon {
    padding: 10px;
    border-radius: var(--uc-radius-md);
}

/* === Statistics Cards === */
.uc-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--uc-space-lg);
    margin-bottom: var(--uc-space-xl);
}

.uc-stat-card {
    background: var(--uc-bg-glass);
    -webkit-backdrop-filter: var(--uc-blur-md);
    backdrop-filter: var(--uc-blur-md);
    border: 1px solid var(--uc-border-subtle);
    border-radius: var(--uc-radius-lg);
    padding: var(--uc-space-lg);
    transition: all var(--uc-transition-base);
}

.uc-stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--uc-border-highlight);
    box-shadow: var(--uc-shadow-lg);
}

.uc-stat-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--uc-text-muted);
    margin-bottom: var(--uc-space-xs);
}

.uc-stat-value {
    font-size: 32px;
    font-weight: 700;
    background: var(--uc-gradient-cosmic);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* === Workspace Grid === */
#ultracloud-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: var(--uc-space-lg);
    animation: fade-in var(--uc-transition-slow) ease-out;
}

@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Premium Workspace Cards === */
.workspace-card {
    background: var(--uc-bg-glass);
    -webkit-backdrop-filter: var(--uc-blur-md);
    backdrop-filter: var(--uc-blur-md);
    border: 1px solid var(--uc-border-subtle);
    border-radius: var(--uc-radius-xl);
    padding: var(--uc-space-lg);
    transition: all var(--uc-transition-base);
    animation: slide-up 0.5s cubic-bezier(0.4, 0, 0.2, 1) backwards;
    position: relative;
    overflow: hidden;
}

.workspace-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--uc-gradient-cosmic);
    opacity: 0;
    transition: opacity var(--uc-transition-base);
}

.workspace-card:hover::before {
    opacity: 1;
}

.workspace-card:hover {
    transform: translateY(-6px);
    background: var(--uc-bg-glass-hover);
    border-color: var(--uc-border-highlight);
    box-shadow: var(--uc-shadow-xl), 0 0 30px var(--uc-glow-cosmic);
}

@keyframes slide-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.workspace-card:nth-child(1) {
    animation-delay: 0s;
}

.workspace-card:nth-child(2) {
    animation-delay: 0.05s;
}

.workspace-card:nth-child(3) {
    animation-delay: 0.1s;
}

.workspace-card:nth-child(4) {
    animation-delay: 0.15s;
}

.workspace-card:nth-child(5) {
    animation-delay: 0.2s;
}

.workspace-card:nth-child(6) {
    animation-delay: 0.25s;
}

.workspace-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--uc-text-primary);
    margin: 0 0 var(--uc-space-sm) 0;
    line-height: 1.3;
}

.workspace-card>p {
    color: var(--uc-text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: var(--uc-space-md);
}

/* === Files Section === */
.files-section {
    background: rgba(0, 0, 0, 0.25);
    border-radius: var(--uc-radius-md);
    padding: var(--uc-space-md);
    margin: var(--uc-space-md) 0;
    border: 1px solid var(--uc-border-subtle);
}

@media (prefers-color-scheme: light) {
    .files-section {
        background: rgba(0, 0, 0, 0.02);
    }
}

.files-section h4 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--uc-text-muted);
    margin: 0 0 var(--uc-space-sm) 0;
    font-weight: 600;
}

.files-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.files-section li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--uc-space-sm);
    border-radius: var(--uc-radius-sm);
    transition: background var(--uc-transition-fast);
    margin-bottom: 2px;
}

.files-section li:hover {
    background: var(--uc-border-subtle);
}

.files-section a {
    color: var(--uc-text-primary);
    text-decoration: none;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: var(--uc-space-sm);
    flex: 1;
    font-weight: 500;
    transition: color var(--uc-transition-fast);
}

.files-section a:hover {
    color: var(--uc-accent-primary);
}

.files-section a::before {
    content: '📄';
    font-size: 16px;
}

/* === Upload Section === */
.upload-section {
    margin-top: var(--uc-space-md);
    display: flex;
    gap: var(--uc-space-sm);
}

.upload-section button {
    flex: 1;
    padding: 10px 16px;
    border-radius: var(--uc-radius-md);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--uc-transition-base);
    border: 1px solid var(--uc-border-highlight);
    background: var(--uc-bg-glass);
    color: var(--uc-text-primary);
}

.upload-section button:hover {
    background: var(--uc-bg-glass-hover);
    transform: translateY(-1px);
}

.delete-btn {
    background: var(--uc-gradient-sunset) !important;
    color: white !important;
    border: none !important;
}

.delete-btn:hover {
    box-shadow: 0 4px 15px var(--uc-glow-danger) !important;
}

.delete-file-btn {
    padding: 4px 12px;
    border-radius: var(--uc-radius-sm);
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    background: transparent;
    border: 1px solid var(--uc-border-subtle);
    color: var(--uc-text-muted);
    transition: all var(--uc-transition-fast);
}

.delete-file-btn:hover {
    border-color: var(--uc-accent-danger);
    color: var(--uc-accent-danger);
    background: rgba(239, 68, 68, 0.1);
}

/* === Toast Notifications === */
#ultracloud-toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: var(--uc-space-sm);
}

.ultracloud-toast {
    background: var(--uc-bg-glass-active);
    -webkit-backdrop-filter: var(--uc-blur-lg);
    backdrop-filter: var(--uc-blur-lg);
    color: var(--uc-text-primary);
    border: 1px solid var(--uc-border-highlight);
    box-shadow: var(--uc-shadow-xl);
    border-radius: var(--uc-radius-lg);
    padding: var(--uc-space-md) var(--uc-space-lg);
    min-width: 300px;
    display: flex;
    align-items: center;
    gap: var(--uc-space-sm);
    opacity: 0;
    transform: translateX(400px);
    transition: all var(--uc-transition-base);
    font-weight: 500;
}

.ultracloud-toast.show {
    opacity: 1;
    transform: translateX(0);
}

.ultracloud-toast.success {
    border-left: 4px solid var(--uc-accent-success);
}

.ultracloud-toast.success::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--uc-accent-success);
    color: white;
    font-weight: bold;
}

.ultracloud-toast.error {
    border-left: 4px solid var(--uc-accent-danger);
}

.ultracloud-toast.error::before {
    content: '✕';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--uc-accent-danger);
    color: white;
    font-weight: bold;
}

/* === Empty State === */
.empty-state {
    text-align: center;
    padding: var(--uc-space-2xl);
    background: var(--uc-bg-glass);
    -webkit-backdrop-filter: var(--uc-blur-md);
    backdrop-filter: var(--uc-blur-md);
    border-radius: var(--uc-radius-xl);
    border: 2px dashed var(--uc-border-highlight);
}

.empty-state h3 {
    font-size: 24px;
    margin-bottom: var(--uc-space-sm);
    color: var(--uc-text-primary);
}

.empty-state p {
    color: var(--uc-text-secondary);
    margin-bottom: var(--uc-space-lg);
}

/* === Loading Skeleton === */
.uc-skeleton {
    background: linear-gradient(90deg,
            var(--uc-bg-glass) 0%,
            var(--uc-bg-glass-hover) 50%,
            var(--uc-bg-glass) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--uc-radius-md);
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* === Responsive === */
@media (max-width: 768px) {
    .ultracloud-workspace {
        padding: var(--uc-space-lg);
    }

    .ultracloud-workspace h2 {
        font-size: 28px;
    }

    #ultracloud-list {
        grid-template-columns: 1fr;
    }

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

    .ultracloud-header {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 480px) {
    .uc-stats-grid {
        grid-template-columns: 1fr;
    }
}