/* =============================================
   SHIPS Fuel Monitor — Design System
   Theme: Dark Industrial / Fuel Monitor
   ============================================= */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ---- Theme Variables ---- */
:root {
    /* 
     * Corporate Light Theme (Default)
     */
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-surface: #ffffff;
    --bg-surface-hover: #f8fafc;
    --bg-surface-elevated: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.9);
    
    --border-color: #e2e8f0;
    --border-active: #cbd5e1;
    
    /* Corporate Blue */
    --primary: #1d4ed8;
    --primary-hover: #2563eb;
    --primary-muted: rgba(29, 78, 216, 0.1);
    --primary-glow: rgba(29, 78, 216, 0.15);
    
    --accent: #0ea5e9;
    --accent-hover: #38bdf8;
    
    /* Status Colors - Adjusted for Light Mode */
    --success: #059669;
    --success-bg: rgba(5, 150, 105, 0.1);
    --success-border: rgba(5, 150, 105, 0.2);
    
    --danger: #dc2626;
    --danger-bg: rgba(220, 38, 38, 0.1);
    --danger-border: rgba(220, 38, 38, 0.2);
    --danger-glow: rgba(220, 38, 38, 0.15);
    
    --warning: #d97706;
    --warning-bg: rgba(217, 119, 6, 0.1);
    --warning-border: rgba(217, 119, 6, 0.2);
    
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --text-inverse: #ffffff;

    /* Sidebar Variables (Dark Navy by default) */
    --sidebar-bg: #0b1120;
    --sidebar-border: #1e293b;
    --sidebar-text: #f1f5f9;
    --sidebar-text-muted: #94a3b8;
    --sidebar-hover: #1e293b;
    --sidebar-active: rgba(56, 189, 248, 0.15);
    --sidebar-active-border: #38bdf8;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    
    /* Border Radius - Moderated for corporate feel */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows - Soft, crisp dropshadows without glow */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-glow: 0 4px 14px 0 var(--primary-glow);
    --shadow-danger: 0 4px 14px 0 var(--danger-glow);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Layout */
    --sidebar-width: 260px;
    --sidebar-collapsed: 70px;
    --header-height: 64px;
}

[data-theme="dark"] {
    color-scheme: dark;
    /* 
     * Sleek Enterprise Dark Theme
     */
    --bg-primary: #020617;
    --bg-secondary: #0f172a;
    --bg-surface: #1e293b;
    --bg-surface-hover: #334155;
    --bg-surface-elevated: #334155;
    --bg-glass: rgba(15, 23, 42, 0.85);

    --border-color: #334155;
    --border-active: #475569;
    
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --primary-muted: rgba(59, 130, 246, 0.15);
    --primary-glow: rgba(59, 130, 246, 0.25);
    
    --accent: #0ea5e9;
    --accent-hover: #38bdf8;
    
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.12);
    --success-border: rgba(16, 185, 129, 0.3);
    
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --danger-border: rgba(239, 68, 68, 0.3);
    --danger-glow: rgba(239, 68, 68, 0.2);
    
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.12);
    --warning-border: rgba(245, 158, 11, 0.3);
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;

    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
}

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

html {
    font-size: 15px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Ambient glow removed for corporate look */

/* ---- Utility Classes ---- */
.hidden { display: none !important; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-center { align-items: center; justify-content: center; }
.flex-between { justify-content: space-between; align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-mono { font-family: var(--font-mono); }
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.w-full { width: 100%; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ---- Typography ---- */
h1, h2, h3, h4 {
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.3;
}
h1 { font-size: 1.85rem; }
h2 { font-size: 1.45rem; }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover { color: var(--primary-hover); }

/* ---- Layout: App Shell ---- */
#app {
    position: relative;
    z-index: 1;
    display: flex;
    min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    height: var(--header-height);
    padding: 0 var(--space-lg);
    border-bottom: 1px solid var(--sidebar-border);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--text-inverse);
    flex-shrink: 0;
}

.sidebar-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--sidebar-text);
    letter-spacing: 0.05em;
}

.sidebar-subtitle {
    font-size: 0.7rem;
    color: var(--sidebar-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-md) var(--space-sm);
    overflow-y: auto;
}

.nav-section-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--sidebar-text-muted);
    padding: var(--space-lg) var(--space-md) var(--space-sm);
    font-weight: 600;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 10px var(--space-md);
    margin: 2px 0;
    border-radius: var(--radius-md);
    color: var(--sidebar-text-muted); /* changed from text-secondary */
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

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

.nav-item.active {
    background: var(--sidebar-active);
    color: var(--sidebar-active-border);
    font-weight: 600;
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--sidebar-active-border);
    border-radius: var(--radius-full);
}

.nav-item svg, .nav-item .nav-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    opacity: 0.8;
}

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

.nav-badge {
    margin-left: auto;
    background: var(--danger);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: var(--radius-full);
    min-width: 20px;
    text-align: center;
    animation: pulse-badge 2s ease infinite;
}

@keyframes pulse-badge {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.sidebar-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--sidebar-border);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.sidebar-user:hover { background: var(--sidebar-hover); }

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--accent), var(--primary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-inverse);
    flex-shrink: 0;
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--sidebar-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 0.7rem;
    color: var(--sidebar-text-muted);
    text-transform: capitalize;
}

/* ---- Main Content ---- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.page-header {
    height: var(--header-height);
    padding: 0 var(--space-xl);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.page-title {
    font-size: 1.3rem;
    font-weight: 700;
}

.page-body {
    padding: var(--space-xl);
    flex: 1;
}

/* ---- Mobile Menu Toggle ---- */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
}

.mobile-menu-btn:hover { background: var(--bg-surface-hover); }

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}

/* ---- Cards ---- */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--border-active);
}

.card-glass {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

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

.card-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ---- Stat Cards ---- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-active);
    box-shadow: var(--shadow-glow);
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    opacity: 0.06;
    transform: translate(30%, -30%);
}

.stat-card.primary::after { background: var(--primary); }
.stat-card.success::after { background: var(--success); }
.stat-card.danger::after { background: var(--danger); }
.stat-card.warning::after { background: var(--warning); }

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: var(--space-md);
}

.stat-card.primary .stat-icon { background: var(--primary-muted); color: var(--primary); }
.stat-card.success .stat-icon { background: var(--success-bg); color: var(--success); }
.stat-card.danger .stat-icon { background: var(--danger-bg); color: var(--danger); }
.stat-card.warning .stat-icon { background: var(--warning-bg); color: var(--warning); }

.stat-value {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--text-primary);
    font-family: var(--font-mono);
    line-height: 1.2;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ---- Tables ---- */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

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

.data-table thead {
    background: var(--bg-surface-elevated);
    position: sticky;
    top: 0;
}

.data-table th {
    padding: 12px var(--space-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table td {
    padding: 12px var(--space-md);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: background var(--transition-fast);
}

.data-table tbody tr:hover {
    background: var(--bg-surface-hover);
}

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

/* Sync Status rows */
.data-table tbody tr.row-unsync {
    background: var(--danger-bg);
}

.data-table tbody tr.row-unsync:hover {
    background: rgba(239, 68, 68, 0.18);
}

.data-table tbody tr.row-unsync td {
    border-bottom-color: var(--danger-border);
}

/* ---- Status Badges ---- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.72rem;
    font-weight: 600;
    white-space: nowrap;
}

.badge-sync {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid var(--success-border);
}

.badge-unsync {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid var(--danger-border);
    animation: pulse-danger 2s ease infinite;
}

.badge-role-admin {
    background: rgba(139, 92, 246, 0.15);
    color: #a78bfa;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.badge-role-manager {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-role-pic {
    background: var(--warning-bg);
    color: var(--warning);
    border: 1px solid var(--warning-border);
}

.badge-role-driver {
    background: var(--primary-muted);
    color: var(--primary);
    border: 1px solid rgba(56, 189, 248, 0.3);
}

@keyframes pulse-danger {
    0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.2); }
    50% { box-shadow: 0 0 0 4px rgba(239, 68, 68, 0); }
}

/* ---- Forms ---- */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.form-label .required {
    color: var(--danger);
    margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px var(--space-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.92rem;
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-muted);
}

.form-input::placeholder { color: var(--text-muted); }

.form-input.input-large {
    padding: 16px var(--space-lg);
    font-size: 1.2rem;
    font-family: var(--font-mono);
    font-weight: 600;
    text-align: center;
    letter-spacing: 0.05em;
}

.form-input.input-error {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px var(--danger-bg);
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

.form-error {
    font-size: 0.75rem;
    color: var(--danger);
    margin-top: var(--space-xs);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

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

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 10px 20px;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
    white-space: nowrap;
    text-decoration: none;
    user-select: none;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--text-inverse);
    border: none;
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-hover), var(--accent-hover));
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
    box-shadow: var(--shadow-danger);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border-color);
}

.btn-outline:hover:not(:disabled) {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
    border-color: var(--border-active);
}

.btn-ghost {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: var(--space-sm) var(--space-md);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
}

.btn-success {
    background: var(--success);
    color: #fff;
}

.btn-success:hover:not(:disabled) {
    background: #059669;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
    border-radius: var(--radius-lg);
    min-height: 52px;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.78rem;
}

.btn-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn-group {
    display: flex;
    gap: var(--space-sm);
}

/* ---- Modal ---- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all var(--transition-normal);
    padding: var(--space-lg);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.modal {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px) scale(0.97);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.1rem;
    font-weight: 700;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--space-lg);
}

.modal-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
}

/* ---- Toast ---- */
.toast-container {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    pointer-events: none;
}

.toast {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px var(--space-lg);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 500;
    min-width: 300px;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: toastIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.toast.toast-success { border-left: 3px solid var(--success); }
.toast.toast-error { border-left: 3px solid var(--danger); }
.toast.toast-warning { border-left: 3px solid var(--warning); }
.toast.toast-info { border-left: 3px solid var(--primary); }

.toast-removing { animation: toastOut 0.3s ease forwards; }

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

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

/* ---- Login Screen ---- */
.login-screen {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    z-index: 500;
    padding: var(--space-lg);
}

.login-screen::before {
    content: '';
    position: absolute;
    top: -30%;
    left: -20%;
    width: 140%;
    height: 160%;
    background: 
        radial-gradient(ellipse at 25% 30%, rgba(56, 189, 248, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 75% 70%, rgba(6, 182, 212, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(15, 23, 42, 0.5) 0%, transparent 70%);
    pointer-events: none;
}

.login-card {
    background: var(--bg-glass);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    width: 100%;
    max-width: 400px;
    position: relative;
    box-shadow: var(--shadow-lg);
}

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

.login-logo-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-lg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--text-inverse);
    margin-bottom: var(--space-md);
}

.login-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--space-xs);
}

.login-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ---- Sync Banner ---- */
.sync-warning {
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    font-size: 0.85rem;
    color: var(--danger);
    animation: slideDown 0.3s ease;
}

.sync-ok {
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    color: var(--success);
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---- Filter Bar ---- */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    align-items: flex-end;
}

.filter-group {
    flex: 1;
    min-width: 160px;
}

.filter-group label {
    display: block;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
    font-weight: 600;
}

.filter-group .form-input,
.filter-group .form-select {
    padding: 8px 12px;
    font-size: 0.85rem;
}

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

.pagination .btn {
    min-width: 36px;
    height: 36px;
    padding: 0;
    font-size: 0.82rem;
}

.pagination .btn.active {
    background: var(--primary);
    color: var(--text-inverse);
}

.pagination-info {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0 var(--space-md);
}

/* ---- Loading Spinner ---- */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

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

.loading-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    flex-direction: column;
    gap: var(--space-md);
}

.loading-text {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    opacity: 0.3;
    margin-bottom: var(--space-md);
}

.empty-state-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.empty-state-text {
    font-size: 0.85rem;
}

/* ---- Meter Display ---- */
.meter-display {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    font-family: var(--font-mono);
}

.meter-display .meter-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
}

.meter-display .meter-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-sans);
}

.meter-diff {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 600;
    font-family: var(--font-mono);
}

.meter-diff.match {
    background: var(--success-bg);
    color: var(--success);
}

.meter-diff.mismatch {
    background: var(--danger-bg);
    color: var(--danger);
}

/* ---- Tabs ---- */
.tabs {
    display: flex;
    gap: 2px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--space-lg);
    overflow-x: auto;
}

.tab-item {
    padding: var(--space-md) var(--space-lg);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
    user-select: none;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    font-family: var(--font-sans);
}

.tab-item:hover {
    color: var(--text-secondary);
}

.tab-item.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 600;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    html { font-size: 14px; }
    
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .sidebar-overlay.active {
        display: block;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .page-body {
        padding: var(--space-md);
    }
    
    .page-header {
        padding: var(--space-md) var(--space-lg);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }
    
    .filter-bar {
        flex-direction: column;
    }
    
    .filter-group {
        min-width: 100%;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .modal {
        max-width: 100%;
        margin: var(--space-md);
    }
    
    .toast-container {
        top: var(--space-md);
        right: var(--space-md);
        left: var(--space-md);
    }
    
    .toast { min-width: auto; }
    
    .btn-lg {
        min-height: 56px;
        font-size: 1.05rem;
    }
    
    .form-input.input-large {
        padding: 18px;
        font-size: 1.4rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .login-card {
        padding: var(--space-lg);
    }
}

/* ---- Print Styles ---- */
@media print {
    body { background: #fff; color: #000; }
    .sidebar, .page-header, .toast-container, .mobile-menu-btn, .filter-bar .btn { display: none; }
    .main-content { margin-left: 0; }
    .data-table th { background: #f3f4f6; }
    .data-table td, .data-table th { border-color: #e5e7eb; }
}