/**
 * Dashboard Application - Professional Dark Theme
 * Clean, refined design with subtle elegance and professional aesthetics
 */

/* ============================================================================
   CSS Custom Properties (Variables) - Professional Dark Theme
   ========================================================================= */

:root {
    /* Professional Dark Theme - Primary Colors */
    --color-bg-primary: #0c0d10;
    --color-bg-secondary: #14161b;
    --color-bg-tertiary: #1c1f26;
    --color-bg-hover: #252830;
    --color-border: #2d3139;
    --color-border-light: #3d424d;

    /* Text Colors - Improved contrast */
    --color-text-primary: #f0f2f5;
    --color-text-secondary: #a0a6b0;
    --color-text-muted: #6b7280;

    /* Accent Colors - Refined teal palette */
    --color-accent: #14b8a6;
    --color-accent-hover: #0d9488;
    --color-accent-dark: #0f766e;
    --color-accent-subtle: rgba(20, 184, 166, 0.12);
    --color-success: #10b981;
    --color-danger: #f43f5e;
    --color-warning: #f59e0b;
    --color-info: #3b82f6;

    /* Simplified Gradients - More subtle */
    --gradient-primary: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
    --gradient-card: #14161b;
    --gradient-hover: #1c1f26;

    /* Layout */
    --nav-height: 60px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Border Radius - Refined, less rounded */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-2xl: 16px;
    --radius-full: 9999px;

    /* Shadows - Subtle depth, no glow */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.3), 0 4px 8px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.3), 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 8px 16px rgba(0, 0, 0, 0.3), 0 16px 32px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 0 1px rgba(20, 184, 166, 0.3);
    --shadow-glow-hover: 0 0 0 2px rgba(20, 184, 166, 0.4);

    /* Transitions - Smooth and subtle */
    --transition-fast: 0.12s ease;
    --transition-normal: 0.2s ease;
    --transition-slow: 0.3s ease;

    /* Z-Index Layers */
    --z-dropdown: 1000;
    --z-modal: 2000;
    --z-toast: 3000;
}

/* Light Theme Override */
body.light {
    --color-bg-primary: #f8fafc;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #f1f5f9;
    --color-bg-hover: #e2e8f0;
    --color-border: #e2e8f0;
    --color-border-light: #cbd5e1;

    --color-text-primary: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #94a3b8;

    --color-accent: #0d9488;
    --color-accent-hover: #0f766e;
    --color-accent-dark: #115e59;
    --color-accent-subtle: rgba(13, 148, 136, 0.08);

    --gradient-card: #ffffff;
    --gradient-hover: #f1f5f9;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.04), 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.04), 0 8px 16px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 8px 16px rgba(0, 0, 0, 0.04), 0 16px 32px rgba(0, 0, 0, 0.08);
    --shadow-glow: 0 0 0 1px rgba(13, 148, 136, 0.2);
    --shadow-glow-hover: 0 0 0 2px rgba(13, 148, 136, 0.3);
}

/* ============================================================================
   Reset and Base Styles
   ========================================================================= */

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

html {
    height: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    min-height: 100%;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
    font-weight: 400;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

h1 { font-size: 36px; }
h2 { font-size: 28px; }
h3 { font-size: 22px; }
h4 { font-size: 18px; }

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--color-accent-hover);
}

/* ============================================================================
   Navigation Bar - Professional & Clean
   ========================================================================= */

.nav-panel {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    z-index: var(--z-dropdown);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.025em;
}

.nav-brand-icon {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 16px;
    transition: transform var(--transition-normal);
}

.nav-brand-icon:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    list-style: none;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

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

.nav-link.active {
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    font-weight: 600;
}

.nav-link.theme-toggle {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-border);
    min-width: 80px;
    justify-content: center;
}

.nav-link.theme-toggle:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-light);
}

.nav-link.logout-btn {
    color: var(--color-danger);
}

.nav-link.logout-btn:hover {
    background-color: rgba(244, 63, 94, 0.1);
    color: var(--color-danger);
}

/* Hamburger Menu for Mobile */
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    padding: var(--spacing-sm);
    cursor: pointer;
}

.nav-hamburger span {
    display: block;
    width: 26px;
    height: 3px;
    background-color: var(--color-text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
}

.nav-hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.nav-hamburger.active span:nth-child(2) {
    opacity: 0;
}

.nav-hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ============================================================================
   Form Elements - Professional & Clean
   ========================================================================= */

label {
    display: block;
    color: var(--color-text-secondary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

input,
select,
textarea {
    width: 100%;
    padding: 12px 14px;
    font-family: inherit;
    font-size: 14px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
    position: relative;
    z-index: 1;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
    background-color: var(--color-bg-secondary);
}

/* Ensure inputs are always interactable */
input,
select,
textarea {
    touch-action: manipulation;
    -webkit-user-select: text;
    user-select: text;
}

input:disabled,
select:disabled,
textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

/* Custom Checkbox Styling */
input[type="checkbox"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    min-width: 18px;
    min-height: 18px;
    cursor: pointer;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    position: relative;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

input[type="checkbox"]:hover {
    border-color: var(--color-border-light);
    background: var(--color-bg-hover);
}

input[type="checkbox"]:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

input[type="checkbox"]:checked {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    width: 5px;
    height: 9px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    top: 2px;
    left: 5px;
}

input[type="checkbox"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Date and Time Picker Styling */
input[type="date"],
input[type="time"],
input[type="datetime-local"] {
    color-scheme: dark;
    cursor: pointer;
    position: relative;
}

body.light input[type="date"],
body.light input[type="time"],
body.light input[type="datetime-local"] {
    color-scheme: light;
}

input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator,
input[type="datetime-local"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
    filter: invert(1) brightness(1.2);
    opacity: 0.8;
    transition: all var(--transition-fast);
    padding: 4px;
    border-radius: var(--radius-sm);
}

body.light input[type="date"]::-webkit-calendar-picker-indicator,
body.light input[type="time"]::-webkit-calendar-picker-indicator,
body.light input[type="datetime-local"]::-webkit-calendar-picker-indicator {
    filter: invert(0) brightness(0.5);
}

input[type="date"]::-webkit-calendar-picker-indicator:hover,
input[type="time"]::-webkit-calendar-picker-indicator:hover,
input[type="datetime-local"]::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
    background: rgba(0, 217, 180, 0.15);
    transform: scale(1.1);
}

input[type="date"]::-webkit-datetime-edit,
input[type="time"]::-webkit-datetime-edit,
input[type="datetime-local"]::-webkit-datetime-edit {
    padding: 0;
}

input[type="date"]::-webkit-datetime-edit-fields-wrapper,
input[type="time"]::-webkit-datetime-edit-fields-wrapper,
input[type="datetime-local"]::-webkit-datetime-edit-fields-wrapper {
    padding: 0;
}

input[type="date"]::-webkit-datetime-edit-text,
input[type="time"]::-webkit-datetime-edit-text,
input[type="datetime-local"]::-webkit-datetime-edit-text {
    color: var(--color-text-secondary);
    padding: 0 2px;
}

input[type="date"]::-webkit-datetime-edit-month-field,
input[type="date"]::-webkit-datetime-edit-day-field,
input[type="date"]::-webkit-datetime-edit-year-field,
input[type="time"]::-webkit-datetime-edit-hour-field,
input[type="time"]::-webkit-datetime-edit-minute-field,
input[type="time"]::-webkit-datetime-edit-ampm-field,
input[type="datetime-local"]::-webkit-datetime-edit-month-field,
input[type="datetime-local"]::-webkit-datetime-edit-day-field,
input[type="datetime-local"]::-webkit-datetime-edit-year-field,
input[type="datetime-local"]::-webkit-datetime-edit-hour-field,
input[type="datetime-local"]::-webkit-datetime-edit-minute-field,
input[type="datetime-local"]::-webkit-datetime-edit-ampm-field {
    color: var(--color-text-primary);
    background: transparent;
    border-radius: var(--radius-sm);
    padding: 2px 4px;
    transition: background var(--transition-fast);
}

input[type="date"]::-webkit-datetime-edit-month-field:focus,
input[type="date"]::-webkit-datetime-edit-day-field:focus,
input[type="date"]::-webkit-datetime-edit-year-field:focus,
input[type="time"]::-webkit-datetime-edit-hour-field:focus,
input[type="time"]::-webkit-datetime-edit-minute-field:focus,
input[type="time"]::-webkit-datetime-edit-ampm-field:focus,
input[type="datetime-local"]::-webkit-datetime-edit-month-field:focus,
input[type="datetime-local"]::-webkit-datetime-edit-day-field:focus,
input[type="datetime-local"]::-webkit-datetime-edit-year-field:focus,
input[type="datetime-local"]::-webkit-datetime-edit-hour-field:focus,
input[type="datetime-local"]::-webkit-datetime-edit-minute-field:focus,
input[type="datetime-local"]::-webkit-datetime-edit-ampm-field:focus {
    background: rgba(0, 217, 180, 0.15);
    outline: none;
}

input[type="date"]:invalid,
input[type="time"]:invalid,
input[type="datetime-local"]:invalid {
    color: var(--color-text-muted);
}

/* ============================================================================
   Buttons - Professional & Clean
   ========================================================================= */

button {
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

button:hover:not(:disabled) {
    transform: translateY(-1px);
}

button:active:not(:disabled) {
    transform: translateY(0);
}

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

.btn-primary {
    background: var(--color-accent);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-accent-hover);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-danger:hover:not(:disabled) {
    background: #e11d48;
    box-shadow: var(--shadow-md);
}

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

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

/* ============================================================================
   Cards and Containers - Professional & Clean
   ========================================================================= */

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

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

.section {
    margin-bottom: var(--spacing-xl);
}

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

/* ============================================================================
   Tables - Professional Design
   ========================================================================= */

.table-container {
    overflow-x: auto;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-md);
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    font-size: 14px;
}

th {
    background: var(--color-bg-tertiary);
    font-weight: 600;
    color: var(--color-text-primary);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

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

tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.01);
}

body.light tr:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.015);
}

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

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

/* ============================================================================
   Messages and Alerts - Professional
   ========================================================================= */

.message {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 14px;
    font-weight: 500;
    margin: var(--spacing-md) 0;
    display: none;
    animation: fadeIn var(--transition-normal);
}

.message.show {
    display: block;
}

.message.error {
    background: rgba(244, 63, 94, 0.1);
    border: 1px solid rgba(244, 63, 94, 0.3);
    color: var(--color-danger);
}

.message.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--color-success);
}

.message.warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--color-warning);
}

.message.info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--color-info);
}

/* ============================================================================
   Loading States
   ========================================================================= */

.loading {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    color: var(--color-text-secondary);
}

.loading-spinner {
    display: inline-block;
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    color: var(--color-text-secondary);
    font-size: 15px;
}

/* ============================================================================
   Modals - Professional & Clean
   ========================================================================= */

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    pointer-events: none;
    visibility: hidden;
}

.modal-overlay.active {
    display: flex;
    animation: fadeIn var(--transition-normal);
    pointer-events: auto;
    visibility: visible;
}

.modal {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn var(--transition-normal);
}

.modal h2 {
    margin-bottom: var(--spacing-lg);
    font-size: 20px;
}

/* ============================================================================
   Utility Classes
   ========================================================================= */

.hidden {
    display: none !important;
}

.admin-only {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--color-text-secondary);
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

/* ============================================================================
   Animations
   ========================================================================= */

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* ============================================================================
   Scrollbar Styling
   ========================================================================= */

::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-light);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

/* ============================================================================
   Accessibility
   ========================================================================= */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

*:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ============================================================================
   Responsive Design - Mobile
   ========================================================================= */

@media (max-width: 768px) {
    :root {
        --nav-height: 60px;
        --spacing-2xl: 32px;
    }

    .nav-panel {
        padding: 0 var(--spacing-md);
    }

    .nav-brand {
        font-size: 18px;
    }

    .nav-brand-icon {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }

    .nav-hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--gradient-card);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 16px;
        gap: var(--spacing-sm);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
        visibility: visible;
    }

    .nav-link {
        width: 100%;
        justify-content: center;
        padding: 14px 20px;
    }

    h1 { font-size: 28px; }
    h2 { font-size: 22px; }
    h3 { font-size: 18px; }

    .card {
        padding: var(--spacing-lg);
        border-radius: var(--radius-xl);
    }

    th, td {
        padding: 12px 10px;
        font-size: 14px;
    }

    /* Stats Tracker Mobile Styles */
    .stats-tracker {
        gap: var(--spacing-md);
    }

    .stat-card {
        min-width: 140px;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .stat-value {
        font-size: 28px;
    }

    /* Dashboard Sections Mobile */
    .dashboard-sections {
        padding: 0 var(--spacing-md);
    }

    /* Editable cells on mobile */
    .editable:hover::after {
        display: none;
    }
}

@media (max-width: 480px) {
    .nav-panel {
        padding: 0 12px;
    }

    .nav-brand-text {
        display: none;
    }

    .card {
        padding: var(--spacing-md);
    }

    h1 { font-size: 24px; }
}

/* ============================================================================
   Stats Tracker - Professional Design (Reference Dashboard Style)
   ========================================================================= */

.stats-tracker {
    display: flex;
    gap: 30px;
    justify-content: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.stat-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 20px 30px;
    text-align: center;
    min-width: 150px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

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

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 5px;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.stat-label {
    font-size: 14px;
    color: var(--color-text-secondary);
    font-weight: 400;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 5px;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

/* ============================================================================
   Inline Editing - Intuitive and Clean
   ========================================================================= */

.editable {
    cursor: pointer;
    position: relative;
    transition: all var(--transition-fast);
    user-select: none;
}

.editable:hover {
    background: var(--color-bg-hover) !important;
    outline: 1px solid var(--color-border-light);
    outline-offset: -1px;
}

.editable:hover::after {
    content: '✎';
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: 12px;
    opacity: 0.6;
    pointer-events: none;
}

.inline-edit-input {
    width: 100%;
    padding: 8px 10px;
    margin: 0;
    font-family: inherit;
    font-size: 14px;
    background: var(--color-bg-primary);
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
    outline: none;
    box-sizing: border-box;
}

.inline-edit-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

/* Ensure table cells with inputs don't have extra padding */
td:has(.inline-edit-input) {
    padding: 0 !important;
}

/* ============================================================================
   Status Badges - Professional Design
   ========================================================================= */

.status-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.status-badge.completed {
    background: rgba(16, 185, 129, 0.12);
    color: var(--color-success);
}

.status-badge.pending {
    background: rgba(245, 158, 11, 0.12);
    color: var(--color-warning);
}

/* ============================================================================
   Dashboard Sections - Layout for Stats and Recent Requests
   ========================================================================= */

.dashboard-sections {
    max-width: 1400px;
    margin: 40px auto 0;
    padding: 0 var(--spacing-xl);
    width: 100%;
}

.recent-requests-card {
    max-width: 900px;
    margin: 0 auto;
}

.recent-requests-card h2 {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
    font-size: 18px;
    font-weight: 600;
}

/* ============================================================================
   Large Screen Optimizations
   ========================================================================= */

@media (min-width: 1920px) {
    :root {
        --nav-height: 72px;
    }

    body {
        font-size: 16px;
    }

    .nav-brand {
        font-size: 24px;
    }

    .nav-brand-icon {
        width: 48px;
        height: 48px;
        font-size: 22px;
    }

    .nav-link {
        padding: 12px 22px;
        font-size: 16px;
    }

    h1 { font-size: 48px; }
    h2 { font-size: 36px; }
    h3 { font-size: 28px; }

    input,
    select,
    textarea,
    button {
        font-size: 16px;
        padding: 16px 20px;
    }

    .card {
        padding: 48px;
    }
}