/* MK Parking Admin - Enterprise Command Center Theme */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&family=DM+Serif+Display&display=swap');

:root {
    /* Core Palette - Dark Enterprise */
    --slate-950: #020617;
    --slate-900: #0f172a;
    --slate-800: #1e293b;
    --slate-700: #334155;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-400: #94a3b8;
    --slate-300: #cbd5e1;
    --slate-200: #e2e8f0;
    --slate-100: #f1f5f9;
    --slate-50: #f8fafc;
    --white: #ffffff;

    /* Accent - Electric Blue System */
    --accent-primary: #3b82f6;
    --accent-light: #60a5fa;
    --accent-dark: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.15);

    /* Semantic Colors */
    --success: #22c55e;
    --success-muted: rgba(34, 197, 94, 0.15);
    --warning: #f59e0b;
    --warning-muted: rgba(245, 158, 11, 0.15);
    --danger: #ef4444;
    --danger-muted: rgba(239, 68, 68, 0.15);
    --info: #06b6d4;
    --info-muted: rgba(6, 182, 212, 0.15);

    /* Text Hierarchy */
    --text-primary: var(--slate-100);
    --text-secondary: var(--slate-400);
    --text-muted: var(--slate-500);
    --text-inverse: var(--slate-900);

    /* Surfaces */
    --surface-base: var(--slate-900);
    --surface-raised: var(--slate-800);
    --surface-overlay: var(--slate-700);
    --surface-highlight: rgba(255, 255, 255, 0.03);

    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-default: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.15);
    --border-focus: var(--accent-primary);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 0 1px var(--accent-primary), 0 0 0 4px var(--accent-glow);

    /* Layout */
    --sidebar-width: 260px;
    --sidebar-collapsed: 72px;
    --header-height: 56px;
    --radius-xs: 2px;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;

    /* Motion */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --duration-fast: 0.1s;
    --duration-normal: 0.2s;
}

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

/* Base */
html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--slate-950);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

/* Subtle grid pattern overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(59, 130, 246, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: -1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--text-primary);
}

.display {
    font-family: 'DM Serif Display', serif;
    font-weight: 400;
}

.mono {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9em;
}

/* Dashboard Layout */
.dashboard-layout {
    display: flex;
    min-height: 100vh;
}

/* ==========================================
   SIDEBAR - Command Panel
   ========================================== */

.sidebar {
    width: var(--sidebar-width);
    background: var(--slate-900);
    border-right: 1px solid var(--border-default);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 1000;
    transition: width var(--duration-normal) var(--ease-out);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar.collapsed .logo h2,
.sidebar.collapsed .logo-subtitle,
.sidebar.collapsed .nav-text,
.sidebar.collapsed .user-details,
.sidebar.collapsed #logout-btn span,
.sidebar.collapsed .sidebar-header::after {
    opacity: 0;
    visibility: hidden;
    width: 0;
    overflow: hidden;
}

.sidebar.collapsed .sidebar-header {
    padding: 16px;
    justify-content: center;
}

.sidebar.collapsed .sidebar-toggle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.sidebar.collapsed .logo {
    display: none;
}

.sidebar.collapsed .nav-menu {
    padding: 0 12px;
}

.sidebar.collapsed .nav-link {
    justify-content: center;
    padding: 12px;
}

.sidebar.collapsed .nav-icon {
    margin: 0;
}

.sidebar.collapsed .nav-footer {
    padding: 16px 12px;
}

.sidebar.collapsed .user-info {
    justify-content: center;
    padding: 10px;
}

.sidebar.collapsed .user-avatar {
    margin: 0;
}

.sidebar.collapsed #logout-btn {
    width: 100%;
    padding: 10px;
    justify-content: center;
}

.sidebar.collapsed #logout-btn svg {
    margin: 0;
}

/* Collapsed tooltips */
.sidebar.collapsed .nav-link {
    position: relative;
}

.sidebar.collapsed .nav-link[data-tooltip]::after {
    display: block;
    content: attr(data-tooltip);
    position: absolute;
    left: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);
    background: var(--slate-700);
    color: var(--text-primary);
    padding: 6px 10px;
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-fast);
    pointer-events: none;
    z-index: 1001;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-default);
    box-shadow: var(--shadow-md);
}

.sidebar.collapsed .nav-link[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
}

.sidebar-header {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-default);
    min-height: 72px;
    overflow: hidden;
}

.logo {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo h2 {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    text-transform: uppercase;
}

.logo-subtitle {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.sidebar-toggle {
    width: 32px;
    height: 32px;
    background: var(--surface-highlight);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast);
}

.sidebar-toggle:hover {
    background: var(--surface-overlay);
    border-color: var(--border-default);
}

.sidebar-toggle .hamburger {
    width: 14px;
    height: 2px;
    background: var(--text-secondary);
    position: relative;
    transition: background var(--duration-fast);
}

.sidebar-toggle .hamburger::before,
.sidebar-toggle .hamburger::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 2px;
    background: var(--text-secondary);
    left: 0;
    transition: background var(--duration-fast);
}

.sidebar-toggle .hamburger::before { top: -5px; }
.sidebar-toggle .hamburger::after { top: 5px; }

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 16px 0;
    overflow-y: auto;
    overflow-x: hidden;
}

.nav-menu {
    list-style: none;
    padding: 0 12px;
}

.nav-item {
    margin-bottom: 2px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: all var(--duration-fast);
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--surface-highlight);
}

.nav-item.active .nav-link {
    color: var(--accent-primary);
    background: var(--accent-glow);
    border-color: rgba(59, 130, 246, 0.3);
}

.nav-icon {
    font-size: 18px;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    opacity: 0.8;
}

.nav-item.active .nav-icon {
    opacity: 1;
}

.nav-text {
    white-space: nowrap;
    overflow: hidden;
}

/* Submenu Styles */
.nav-group-toggle {
    justify-content: space-between;
}

.nav-chevron {
    display: flex;
    align-items: center;
    transition: transform var(--duration-normal);
    opacity: 0.5;
    margin-left: auto;
}

.nav-group.open .nav-chevron {
    transform: rotate(180deg);
}

.nav-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, opacity 0.2s ease;
    opacity: 0;
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-group.open .nav-submenu {
    max-height: 300px;
    opacity: 1;
}

.nav-subitem {
    margin: 0;
}

.nav-sublink {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px 9px 44px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 12px;
    font-weight: 500;
    transition: all var(--duration-fast);
    border-radius: var(--radius-sm);
}

.nav-sublink:hover {
    color: var(--text-primary);
    background: var(--surface-highlight);
}

.nav-sublink svg {
    opacity: 0.6;
    flex-shrink: 0;
}

.nav-subitem.active .nav-sublink {
    color: var(--accent-primary);
    background: var(--accent-glow);
}

.nav-subitem.active .nav-sublink svg {
    opacity: 1;
}

/* Collapsed sidebar - hide submenu */
.sidebar.collapsed .nav-submenu {
    display: none;
}

.sidebar.collapsed .nav-chevron {
    display: none;
}

/* User Footer */
.nav-footer {
    padding: 16px;
    border-top: 1px solid var(--border-default);
    margin-top: auto;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    padding: 10px;
    background: var(--surface-highlight);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-dark) 100%);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.user-details {
    flex: 1;
    overflow: hidden;
}

.user-name {
    display: block;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    display: block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ==========================================
   MAIN CONTENT
   ========================================== */

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--duration-normal) var(--ease-out);
    background: var(--slate-950);
}

.sidebar.collapsed + .main-content {
    margin-left: var(--sidebar-collapsed);
}

/* Header Bar */
.main-header {
    height: var(--header-height);
    background: var(--slate-900);
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.breadcrumb {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.breadcrumb-item {
    color: var(--text-primary);
    font-weight: 600;
    position: relative;
    padding-left: 16px;
}

.breadcrumb-item::before {
    content: '/';
    position: absolute;
    left: 4px;
    color: var(--text-muted);
    font-weight: 400;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.last-updated {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--text-muted);
    padding: 6px 10px;
    background: var(--surface-highlight);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
}

/* Status indicator in header */
.system-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 500;
    color: var(--success);
    padding: 6px 10px;
    background: var(--success-muted);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.system-status::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

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

/* Module Container */
.module-container {
    flex: 1;
    padding: 24px;
}

/* Error Container */
.error-container {
    margin: 0 24px 16px;
    padding: 12px 16px;
    background: var(--danger-muted);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-sm);
    color: var(--danger);
    font-weight: 500;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.error-container::before {
    content: '!';
    width: 18px;
    height: 18px;
    background: var(--danger);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    border-radius: var(--radius-xs);
    flex-shrink: 0;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(2, 6, 23, 0.9);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 2px solid var(--slate-700);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-text {
    margin-top: 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

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

::-webkit-scrollbar-track {
    background: var(--slate-900);
}

::-webkit-scrollbar-thumb {
    background: var(--slate-700);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--slate-600);
}

/* Selection */
::selection {
    background: var(--accent-glow);
    color: var(--text-primary);
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .module-container {
        padding: 16px;
    }
}

@media (max-width: 768px) {
    .main-header {
        padding: 0 16px;
    }

    .module-container {
        padding: 12px;
    }

    .last-updated,
    .system-status {
        display: none;
    }
}