/* ============================================
   ATLAS DATA SERVICE - Design System
   Ocean blues, gradients, modern wireframe
   ============================================ */

/* CSS Variables */
:root {
    /* Ocean Blue Palette */
    --ocean-50: #e6f4f9;
    --ocean-100: #cce9f4;
    --ocean-200: #99d3e9;
    --ocean-300: #66bdde;
    --ocean-400: #33a7d3;
    --ocean-500: #0091c8;
    --ocean-600: #0074a0;
    --ocean-700: #005778;
    --ocean-800: #003a50;
    --ocean-900: #001d28;
    
    /* Accent Colors */
    --teal-400: #2dd4bf;
    --teal-500: #14b8a6;
    --cyan-400: #22d3ee;
    --cyan-500: #06b6d4;
    --sky-400: #38bdf8;
    --sky-500: #0ea5e9;
    
    /* Semantic Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: var(--ocean-400);
    
    /* Neutrals */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --gray-950: #020617;
    
    /* Background Gradients */
    --gradient-ocean: linear-gradient(135deg, var(--ocean-900) 0%, var(--ocean-800) 50%, var(--ocean-700) 100%);
    --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    --gradient-button: linear-gradient(135deg, var(--ocean-500) 0%, var(--teal-500) 100%);
    --gradient-button-hover: linear-gradient(135deg, var(--ocean-400) 0%, var(--teal-400) 100%);
    
    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    
    /* Typography */
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

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

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

body {
    font-family: var(--font-sans);
    background: var(--ocean-900);
    color: var(--gray-100);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Animated Background */
.bg-gradient {
    position: fixed;
    inset: 0;
    background: var(--gradient-ocean);
    z-index: -2;
}

.bg-grid {
    position: fixed;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* Glass Card Effect */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--glass-shadow);
}

/* Views */
.view {
    display: none;
    min-height: 100vh;
}

.view.active {
    display: block;
}

/* ============================================
   LOGIN VIEW
   ============================================ */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
}

.login-card {
    width: 100%;
    max-width: 420px;
    padding: var(--space-10);
}

.logo-container {
    text-align: center;
    margin-bottom: var(--space-8);
}

.logo-wireframe {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-4);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(5deg); }
}

.logo-svg {
    width: 100%;
    height: 100%;
}

.logo-svg ellipse, .logo-svg circle {
    fill: none;
    stroke-width: 1.5;
}

.globe-outer {
    stroke: var(--ocean-400);
    animation: pulse 3s ease-in-out infinite;
}

.globe-horizontal {
    stroke: var(--teal-400);
    opacity: 0.8;
}

.globe-vertical {
    stroke: var(--cyan-400);
    opacity: 0.8;
}

.globe-tilt {
    stroke: var(--sky-400);
    opacity: 0.6;
}

.globe-center {
    fill: var(--ocean-400);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.logo-text {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--ocean-300), var(--teal-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-2);
}

.logo-tagline {
    color: var(--gray-400);
    font-size: 0.95rem;
    font-weight: 400;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.input-group {
    position: relative;
}

.input-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-300);
    margin-bottom: var(--space-2);
}

.input-group input {
    width: 100%;
    padding: var(--space-4);
    padding-right: 3rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: var(--gray-100);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    transition: all var(--transition-base);
}

.input-group input:focus {
    outline: none;
    border-color: var(--ocean-500);
    box-shadow: 0 0 0 3px rgba(0, 145, 200, 0.2);
}

.input-group input::placeholder {
    color: var(--gray-500);
}

.toggle-visibility {
    position: absolute;
    right: var(--space-3);
    bottom: var(--space-3);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.toggle-visibility:hover {
    color: var(--gray-200);
}

.toggle-visibility svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.error-message {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    color: #fca5a5;
    font-size: 0.875rem;
    margin-top: var(--space-4);
}

.hidden {
    display: none !important;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-lg);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    text-decoration: none;
}

.btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.btn-primary {
    background: var(--gradient-button);
    color: white;
    box-shadow: 0 4px 14px rgba(0, 145, 200, 0.3);
}

.btn-primary:hover {
    background: var(--gradient-button-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0, 145, 200, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--gray-200);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-ghost {
    background: transparent;
    color: var(--gray-300);
    padding: var(--space-2);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--gray-100);
}

.btn-icon {
    padding: var(--space-2);
    background: transparent;
    color: var(--gray-400);
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--gray-200);
}

.btn-full {
    width: 100%;
}

.btn-sm {
    padding: var(--space-2) var(--space-3);
    font-size: 0.85rem;
}

.btn-sm svg {
    width: 16px;
    height: 16px;
}

/* ============================================
   HEADER
   ============================================ */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    margin: var(--space-4);
    position: sticky;
    top: var(--space-4);
    z-index: 100;
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    cursor: pointer;
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--gray-100);
}

.header-logo-svg {
    width: 32px;
    height: 32px;
}

.header-logo-svg ellipse {
    fill: none;
    stroke-width: 2;
}

.header-logo-svg .globe-outer { stroke: var(--ocean-400); }
.header-logo-svg .globe-horizontal { stroke: var(--teal-400); }
.header-logo-svg .globe-vertical { stroke: var(--cyan-400); }

.header-center {
    flex: 1;
    max-width: 500px;
    margin: 0 var(--space-6);
}

.search-container {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    fill: var(--gray-400);
}

.search-container input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    padding-left: 3rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    color: var(--gray-100);
    font-size: 0.95rem;
    transition: all var(--transition-base);
}

.search-container input:focus {
    outline: none;
    border-color: var(--ocean-500);
    background: rgba(0, 0, 0, 0.3);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.user-name {
    color: var(--gray-300);
    font-size: 0.875rem;
}

.user-tags {
    display: flex;
    gap: var(--space-1);
}

.back-btn {
    gap: var(--space-2);
}

.detail-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-100);
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-content {
    padding: var(--space-6);
    padding-top: var(--space-4);
    max-width: 1400px;
    margin: 0 auto;
}

/* Stats Bar */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.stat-card {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon svg {
    width: 24px;
    height: 24px;
    fill: white;
}

.datasets-icon { background: linear-gradient(135deg, var(--ocean-500), var(--ocean-600)); }
.owned-icon { background: linear-gradient(135deg, var(--teal-500), var(--teal-400)); }
.tags-icon { background: linear-gradient(135deg, var(--cyan-500), var(--sky-500)); }

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-100);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-400);
}

/* Filter Bar */
.filter-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.filter-group label {
    color: var(--gray-300);
    font-size: 0.875rem;
    white-space: nowrap;
}

.filter-chip-input {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.filter-chip-input span {
    color: var(--gray-400);
}

.filter-input-small {
    width: 120px;
    padding: var(--space-2) var(--space-3);
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--gray-100);
    font-size: 0.875rem;
}

.filter-input-small:focus {
    outline: none;
    border-color: var(--ocean-500);
}

.active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    background: var(--ocean-700);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: var(--ocean-200);
}

.filter-chip button {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    color: var(--ocean-300);
    display: flex;
}

.filter-chip button:hover {
    color: var(--ocean-100);
}

.filter-chip button svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

.filter-actions {
    display: flex;
    gap: var(--space-3);
}

/* Datasets Section */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-5);
}

.section-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-100);
}

.view-toggle {
    display: flex;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    padding: var(--space-1);
}

.toggle-btn {
    padding: var(--space-2);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--gray-400);
    transition: all var(--transition-fast);
}

.toggle-btn:hover {
    color: var(--gray-200);
}

.toggle-btn.active {
    background: var(--ocean-600);
    color: white;
}

.toggle-btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* Datasets Grid */
.datasets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-5);
}

.datasets-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

/* Dataset Card */
.dataset-card {
    padding: var(--space-5);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

.dataset-card:hover {
    transform: translateY(-2px);
    border-color: var(--ocean-500);
}

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

.dataset-card.owned::before {
    opacity: 1;
    background: linear-gradient(90deg, var(--teal-500), var(--cyan-500));
}

.dataset-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--space-3);
}

.dataset-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-100);
    margin-bottom: var(--space-1);
}

.dataset-id {
    font-size: 0.75rem;
    color: var(--gray-500);
    font-family: var(--font-mono);
}

.owner-badge {
    background: linear-gradient(135deg, var(--teal-500), var(--cyan-500));
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.locked-badge {
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
    font-size: 0.7rem;
    font-weight: 500;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
}

.dataset-card.no-access {
    opacity: 0.6;
    cursor: not-allowed;
}

.dataset-card.no-access:hover {
    transform: none;
    border-color: var(--glass-border);
}

.dataset-card.no-access::before {
    opacity: 0 !important;
}

.dataset-description {
    color: var(--gray-400);
    font-size: 0.875rem;
    margin-bottom: var(--space-4);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.dataset-metadata {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.metadata-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    background: rgba(0, 145, 200, 0.15);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-family: var(--font-mono);
}

.metadata-key {
    color: var(--ocean-300);
}

.metadata-value {
    color: var(--gray-200);
}

.dataset-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tag-badge {
    padding: var(--space-1) var(--space-2);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--gray-300);
}

.tag-badge.public {
    background: rgba(16, 185, 129, 0.15);
    color: #6ee7b7;
}

/* Loading & Empty States */
.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-12);
    color: var(--gray-400);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--glass-border);
    border-top-color: var(--ocean-500);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--space-4);
}

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

.no-results {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-12);
    color: var(--gray-500);
}

.no-results svg {
    width: 48px;
    height: 48px;
    fill: currentColor;
    margin-bottom: var(--space-4);
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-8);
}

.pagination button {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--gray-300);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination button:hover:not(:disabled) {
    background: var(--ocean-600);
    border-color: var(--ocean-500);
    color: white;
}

.pagination button.active {
    background: var(--ocean-600);
    border-color: var(--ocean-500);
    color: white;
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================
   DETAIL VIEW
   ============================================ */
.detail-content {
    padding-top: var(--space-6);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
}

.detail-card {
    padding: var(--space-5);
}

.detail-card.full-width {
    grid-column: 1 / -1;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--glass-border);
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-200);
}

.access-badge {
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.access-badge.owner {
    background: linear-gradient(135deg, var(--teal-500), var(--cyan-500));
    color: white;
}

.access-badge.read {
    background: rgba(255, 255, 255, 0.1);
    color: var(--gray-300);
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-3) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    color: var(--gray-400);
    font-size: 0.875rem;
}

.info-value {
    color: var(--gray-100);
    font-size: 0.875rem;
    font-family: var(--font-mono);
    text-align: right;
    max-width: 60%;
    word-break: break-word;
}

/* Metadata Grid */
.metadata-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-3);
}

.metadata-item {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    padding: var(--space-3);
}

.metadata-item-key {
    font-size: 0.75rem;
    color: var(--ocean-300);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-1);
}

.metadata-item-value {
    font-size: 0.9rem;
    color: var(--gray-100);
    font-family: var(--font-mono);
    word-break: break-word;
}

.metadata-item-value.array {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
}

.array-item {
    background: var(--ocean-700);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
}

/* Tags List */
.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.no-tags-hint {
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.2);
    border-radius: var(--radius-md);
    padding: var(--space-4);
}

.no-tags-hint p {
    margin: 0;
}

.no-tags-hint p:first-child {
    margin-bottom: var(--space-2);
}

.tag-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--gray-200);
}

.tag-item.public {
    background: rgba(16, 185, 129, 0.15);
    color: #6ee7b7;
}

.tag-item .remove-tag {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    color: inherit;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.tag-item .remove-tag:hover {
    opacity: 1;
}

.tag-item .remove-tag svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

/* Columns Table */
.columns-table {
    width: 100%;
    border-collapse: collapse;
}

.columns-table th,
.columns-table td {
    padding: var(--space-3);
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.columns-table th {
    color: var(--gray-400);
    font-weight: 500;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.columns-table td {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--gray-200);
}

.dtype-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-2);
    background: var(--ocean-700);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--ocean-200);
}

/* Preview Table */
.preview-actions {
    display: flex;
    gap: var(--space-2);
}

.table-container {
    overflow-x: auto;
    max-height: 400px;
    overflow-y: auto;
}

.preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.preview-table th,
.preview-table td {
    padding: var(--space-3);
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    white-space: nowrap;
}

.preview-table th {
    position: sticky;
    top: 0;
    background: var(--ocean-800);
    color: var(--gray-300);
    font-weight: 500;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.preview-table td {
    font-family: var(--font-mono);
    color: var(--gray-200);
}

.preview-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* ============================================
   MODALS
   ============================================ */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--space-6);
}

.modal-content.modal-lg {
    max-width: 600px;
}

/* Tag count badge */
.tag-count {
    background: var(--ocean-500);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    margin-left: var(--space-2);
}

/* Tags explainer */
.tags-explainer {
    background: linear-gradient(135deg, rgba(0, 145, 200, 0.15), rgba(20, 184, 166, 0.15));
    border: 1px solid rgba(0, 145, 200, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-bottom: var(--space-5);
}

.tags-explainer p {
    margin: 0;
    color: var(--gray-200);
}

/* Tags sections in modal */
.tags-section {
    margin-bottom: var(--space-5);
}

.tags-section h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-200);
    margin-bottom: var(--space-2);
}

.section-hint {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-bottom: var(--space-3);
}

/* Clickable tag for acquiring */
.tag-acquire {
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tag-acquire:hover {
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(0, 145, 200, 0.3);
}

.tag-acquire.public {
    background: rgba(16, 185, 129, 0.2);
    border: 1px dashed rgba(16, 185, 129, 0.5);
    color: #6ee7b7;
}

.tag-acquire.public:hover {
    background: rgba(16, 185, 129, 0.3);
}

.tag-acquire.private {
    background: rgba(255, 255, 255, 0.05);
    border: 1px dashed var(--gray-600);
    color: var(--gray-400);
}

.tag-acquire.private:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--gray-500);
}

.tag-owned {
    background: var(--ocean-600);
    color: white;
}

/* Secret input section */
.acquire-secret-section {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-top: var(--space-4);
}

.acquire-secret-section h4 {
    font-size: 0.9rem;
    color: var(--gray-300);
    margin-bottom: var(--space-3);
}

.secret-input-group {
    display: flex;
    gap: var(--space-3);
}

.secret-input-group input {
    flex: 1;
    padding: var(--space-3);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--gray-100);
    font-family: var(--font-mono);
}

.secret-input-group input:focus {
    outline: none;
    border-color: var(--ocean-500);
}

.no-tags-message {
    color: var(--gray-500);
    font-size: 0.9rem;
    font-style: italic;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-5);
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-100);
}

.modal-body {
    margin-bottom: var(--space-5);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
}

/* Metadata Editor */
.metadata-editor {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.metadata-field {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.metadata-field input {
    flex: 1;
    padding: var(--space-3);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--gray-100);
    font-size: 0.9rem;
}

.metadata-field input:first-child {
    max-width: 120px;
    font-family: var(--font-mono);
}

.metadata-field input:focus {
    outline: none;
    border-color: var(--ocean-500);
}

/* Tags Editor */
.current-tags {
    margin-bottom: var(--space-5);
}

.current-tags h4,
.add-tag-section h4 {
    font-size: 0.875rem;
    color: var(--gray-400);
    margin-bottom: var(--space-3);
}

.add-tag-form {
    display: flex;
    gap: var(--space-3);
}

.add-tag-form select {
    flex: 1;
    padding: var(--space-3);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--gray-100);
    font-size: 0.9rem;
}

.add-tag-form select:focus,
.add-tag-form input[type="text"]:focus {
    outline: none;
    border-color: var(--ocean-500);
}

.add-tag-form input[type="text"] {
    flex: 1;
    padding: var(--space-3);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--gray-100);
    font-size: 0.9rem;
}

.add-tag-form input[type="text"]::placeholder {
    color: var(--gray-500);
}

.create-tag-section {
    margin-top: var(--space-5);
    padding-top: var(--space-5);
    border-top: 1px solid var(--glass-border);
}

.section-hint {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-bottom: var(--space-3);
    margin-top: 0;
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast-container {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    z-index: 2000;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    background: var(--gray-800);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    animation: slideIn 0.3s ease;
    min-width: 300px;
}

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

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

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

.toast.info {
    border-left: 4px solid var(--info);
}

.toast-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.toast.success .toast-icon { fill: var(--success); }
.toast.error .toast-icon { fill: var(--error); }
.toast.info .toast-icon { fill: var(--info); }

.toast-message {
    flex: 1;
    color: var(--gray-200);
    font-size: 0.9rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .app-header {
        flex-direction: column;
        gap: var(--space-4);
        padding: var(--space-4);
    }
    
    .header-center {
        width: 100%;
        max-width: none;
        margin: 0;
        order: -1;
    }
    
    .header-left, .header-right {
        width: 100%;
        justify-content: space-between;
    }
    
    .detail-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-actions {
        justify-content: flex-end;
    }
    
    .stats-bar {
        grid-template-columns: 1fr;
    }
    
    .datasets-grid {
        grid-template-columns: 1fr;
    }
}