/* =============================================================================
   Premium Apple-Inspired Admin Dashboard UI
   Ultra-clean, minimalist design with subtle depth and premium spacing
   ============================================================================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Solarized dark palette (VS Code-like) */
    --color-bg-primary: #002b36;
    --color-bg-secondary: #073642;
    --color-bg-tertiary: #0b3a44;
    --color-text-primary: #fdf6e3;
    --color-text-secondary: #eee8d5;
    --color-text-tertiary: #93a1a1;
    --color-border: #586e75;
    --color-border-light: #2f4b55;

    /* Accent colors */
    --color-accent-blue: #268bd2;
    --color-accent-green: #859900;
    --color-accent-red: #dc322f;
    --color-accent-orange: #cb4b16;

    /* Shadows - dark Solarized */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.55);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.65);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 13px;
    --font-size-base: 15px;
    --font-size-lg: 17px;
    --font-size-xl: 20px;
    --font-size-2xl: 28px;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    --spacing-3xl: 48px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* =============================================================================
   Base Styles
   ============================================================================= */

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

body {
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background:
        radial-gradient(circle at top left, rgba(38, 139, 210, 0.12), transparent 24%),
        radial-gradient(circle at top right, rgba(133, 153, 0, 0.10), transparent 18%),
        linear-gradient(180deg, #00212a 0%, #002b36 55%, #001f28 100%);
    font-size: var(--font-size-base);
    line-height: 1.6;
    letter-spacing: -0.3px;
}

a {
    color: var(--color-accent-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: #93c5fd;
}

/* =============================================================================
   Layout
   ============================================================================= */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-2xl);
}

.navbar {
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border-light);
    padding: var(--spacing-lg) var(--spacing-2xl);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.navbar-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: var(--font-size-xl);
    font-weight: 600;
    letter-spacing: -0.5px;
}

.navbar-menu {
    display: flex;
    gap: var(--spacing-xl);
    list-style: none;
}

.navbar-menu a {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.navbar-menu a:hover {
    color: var(--color-accent-blue);
}

.hero-section {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(280px, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

@media (max-width: 980px) {
    .hero-section {
        grid-template-columns: 1fr;
    }
}

.hero-copy {
    padding: var(--spacing-2xl);
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: 24px;
    box-shadow: var(--shadow-md);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 0.9rem;
    border-radius: 999px;
    background-color: rgba(0, 113, 227, 0.1);
    color: var(--color-accent-blue);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--spacing-md);
}

.hero-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    max-width: 640px;
    margin-bottom: var(--spacing-lg);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.hero-meta {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

.card-surface {
    background-color: var(--color-bg-primary);
    border: 1px solid rgba(209, 209, 214, 0.7);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(18px);
}

.card-header-compact {
    border-bottom: none;
    padding-bottom: 0;
}

.hero-status-text {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.section-title {
    font-size: 1.15rem;
    letter-spacing: -0.4px;
    color: var(--color-text-primary);
    margin-top: var(--spacing-3xl);
    margin-bottom: var(--spacing-lg);
}

.footer-bar {
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border-light);
    text-align: center;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-xs);
}

.table-wrapper {
    overflow-x: auto;
    border-radius: 20px;
    border: 1px solid var(--color-border-light);
    background-color: var(--color-bg-primary);
}

thead {
    background-color: rgba(246, 246, 249, 0.95);
    border-bottom: 1px solid var(--color-border-light);
}

tbody tr:hover {
    background-color: rgba(242, 242, 247, 0.85);
}

/* =============================================================================
   Typography
   ============================================================================= */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

h1 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    margin-top: var(--spacing-2xl);
}

h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

p {
    color: var(--color-text-secondary);
    line-height: 1.65;
}

small {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

/* =============================================================================
   Cards & Sections
   ============================================================================= */

.card {
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    transition: box-shadow var(--transition-normal),
                border-color var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.card:hover {
    border-color: var(--color-border);
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.auth-panel {
    max-width: 520px;
    margin: 4.5rem auto 0;
    padding: var(--spacing-3xl);
    border: 1px solid rgba(209, 209, 214, 0.8);
    border-radius: 28px;
    box-shadow: var(--shadow-lg);
}

.form-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    margin-top: var(--spacing-lg);
}

.form-actions .btn {
    min-width: 160px;
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-xs);
}

/* =============================================================================
   Stats Cards (Dashboard Overview)
   ============================================================================= */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.stat-card {
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    cursor: default;
}

.stat-card:hover {
    background-color: var(--color-bg-primary);
    border-color: var(--color-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-card-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.stat-card-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-card-change {
    font-size: var(--font-size-xs);
    color: var(--color-accent-green);
    font-weight: 500;
}

.stat-card-change.negative {
    color: var(--color-accent-red);
}

/* =============================================================================
   Tables
   ============================================================================= */

.table-wrapper {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--color-border-light);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

thead {
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border-light);
}

th {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.5px;
}

td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text-primary);
}

tbody tr {
    transition: background-color var(--transition-fast);
}

tbody tr:hover {
    background-color: var(--color-bg-secondary);
}

tbody tr:last-child td {
    border-bottom: none;
}

/* Truncated cell text */
.cell-truncate {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.cell-code {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: 12px;
}

/* =============================================================================
   Forms
   ============================================================================= */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group:last-child {
    margin-bottom: 0;
}

label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-family: inherit;
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    transition: border-color var(--transition-fast),
                box-shadow var(--transition-fast);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="search"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.1);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

input::placeholder {
    color: var(--color-text-tertiary);
}

/* =============================================================================
   Buttons
   ============================================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    gap: var(--spacing-sm);
}

/* Primary Button */
.btn-primary {
    background-color: var(--color-accent-blue);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
}

.btn-primary:hover:not(:disabled) {
    background-color: #0060cc;
    box-shadow: 0 6px 16px rgba(0, 113, 227, 0.4);
    transform: translateY(-1px);
}

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

/* Secondary Button */
.btn-secondary {
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-text-tertiary);
}

/* Ghost Button */
.btn-ghost {
    background-color: transparent;
    color: var(--color-accent-blue);
    border: 1px solid var(--color-accent-blue);
}

.btn-ghost:hover:not(:disabled) {
    background-color: rgba(0, 113, 227, 0.05);
}

/* Danger Button */
.btn-danger {
    background-color: var(--color-accent-red);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background-color: #ff1744;
    box-shadow: 0 6px 16px rgba(255, 59, 48, 0.3);
}

/* Success Button */
.btn-success {
    background-color: var(--color-accent-green);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background-color: #30b746;
}

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

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: var(--font-size-base);
}

/* =============================================================================
   Badges & Status Indicators
   ============================================================================= */

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 12px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background-color: rgba(0, 113, 227, 0.1);
    color: var(--color-accent-blue);
}

.badge-success {
    background-color: rgba(52, 199, 89, 0.1);
    color: var(--color-accent-green);
}

.badge-warning {
    background-color: rgba(255, 149, 0, 0.1);
    color: var(--color-accent-orange);
}

.badge-danger {
    background-color: rgba(255, 59, 48, 0.1);
    color: var(--color-accent-red);
}

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: var(--spacing-sm);
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.status-dot.active {
    background-color: var(--color-accent-green);
}

.status-dot.inactive {
    background-color: var(--color-text-tertiary);
    animation: none;
}

.status-dot.warning {
    background-color: var(--color-accent-orange);
}

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

/* =============================================================================
   Grid Layouts
   ============================================================================= */

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* =============================================================================
   Flexbox Utilities
   ============================================================================= */

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.flex-col {
    flex-direction: column;
}

.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* =============================================================================
   Spacing Utilities
   ============================================================================= */

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* =============================================================================
   Alert Messages
   ============================================================================= */

.alert {
    padding: var(--spacing-lg);
    border-radius: 12px;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    border: 1px solid;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.alert-success {
    background-color: rgba(52, 199, 89, 0.08);
    border-color: rgba(52, 199, 89, 0.3);
    color: var(--color-accent-green);
}

.alert-danger {
    background-color: rgba(255, 59, 48, 0.08);
    border-color: rgba(255, 59, 48, 0.3);
    color: var(--color-accent-red);
}

.alert-warning {
    background-color: rgba(255, 149, 0, 0.08);
    border-color: rgba(255, 149, 0, 0.3);
    color: var(--color-accent-orange);
}

.alert-info {
    background-color: rgba(0, 113, 227, 0.08);
    border-color: rgba(0, 113, 227, 0.3);
    color: var(--color-accent-blue);
}

/* =============================================================================
   Responsive Design
   ============================================================================= */

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-lg);
    }
    
    .navbar {
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .navbar-menu {
        gap: var(--spacing-lg);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    table {
        font-size: 12px;
    }
    
    th, td {
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 24px;
    }
    
    .navbar-menu {
        gap: var(--spacing-md);
        font-size: 12px;
    }
    
    .card {
        padding: var(--spacing-lg);
    }
}

/* =============================================================================
   Print Styles
   ============================================================================= */

@media print {
    .navbar,
    .btn,
    .navbar-menu {
        display: none;
    }
}