/* ==========================================================================
   LDT STUDENT MANAGEMENT SYSTEM - MAIN STYLESHEET (MODERNIZED)
   ========================================================================== */

/* ==========================================================================
   1. CSS VARIABLES - Modern Color Palette & Design Tokens
   ========================================================================== */
:root {
    /* Brand Colors - Enhanced */
    --ldt-primary: #F05409; /* LDT Orange - Primary Brand Color */
    --ldt-primary-light: #FF7A3D; /* Lighter Orange for hover states */
    --ldt-primary-dark: #D64B08; /* Darker Orange for active states */

    --ldt-secondary: #3D7D99; /* Blue-Grey - Secondary Color */
    --ldt-secondary-light: #5A9BB8; /* Lighter Blue-Grey */
    --ldt-secondary-dark: #2A5A74; /* Darker Blue-Grey */

    /* Neutral Colors - Improved */
    --ldt-dark: #1F2937; /* Dark Grey - improved from #272727 */
    --ldt-grey: #6B7280; /* Medium Grey */
    --ldt-light-grey: #F3F4F6; /* Light Grey background */
    --ldt-lighter-grey: #F9FAFB; /* Very Light background */
    --ldt-border: #E5E7EB; /* Border color */
    --ldt-black: #000000; /* Black */
    --ldt-white: #FFFFFF; /* White */
    --ldt-light: #F5F5F5; /* Light background */

    /* Semantic Colors - More vibrant */
    --ldt-success: #10B981; /* Success green - improved */
    --ldt-success-light: #ECFDF5; /* Success background */
    --ldt-warning: #F59E0B; /* Warning amber - improved */
    --ldt-warning-light: #FFFBEB; /* Warning background */
    --ldt-danger: #EF4444; /* Error red - improved */
    --ldt-danger-light: #FEE2E2; /* Error background */
    --ldt-info: #3B82F6; /* Info blue */
    --ldt-info-light: #EFF6FF; /* Info background */

    /* Spacing Scale - Updated */
    --spacing-xs: 0.25rem; /* 4px */
    --spacing-sm: 0.5rem; /* 8px */
    --spacing-md: 1rem; /* 16px */
    --spacing-lg: 1.5rem; /* 24px */
    --spacing-xl: 2rem; /* 32px */
    --spacing-2xl: 3rem; /* 48px */

    /* Shadows - Modern elevation system */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 2px 0 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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Border Radius - Consistent */
    --radius-sm: 0.375rem; /* 6px */
    --radius-md: 0.5rem; /* 8px */
    --radius-lg: 0.75rem; /* 12px */
    --radius-xl: 1rem; /* 16px */
    --radius-full: 9999px; /* Full circle */

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* Typography */
    --font-sans: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-mono: 'Courier New', monospace;
}

/* ==========================================================================
   DARK MODE - CSS Variables Override
   ========================================================================== */
body.dark-mode {
    /* Neutral Colors - Dark Theme */
    --ldt-dark: #F3F4F6; /* Light text on dark background */
    --ldt-grey: #D1D5DB; /* Medium grey for text */
    --ldt-light-grey: #374151; /* Dark grey backgrounds */
    --ldt-lighter-grey: #1F2937; /* Very dark background */
    --ldt-border: #4B5563; /* Border color for dark mode */
    --ldt-black: #FFFFFF; /* Inverted - use white as "black" */
    --ldt-white: #111827; /* Dark background instead of white */
    --ldt-light: #1F2937; /* Dark background */

    /* Primary Colors - Dark Theme */
    --ldt-primary: #F05409; /* Original orange for dark mode */
    --ldt-primary-dark: #D64B08; /* Original darker orange for gradients */
    --ldt-primary-light: #FF7A3D; /* Original light orange for backgrounds */
    --ldt-primary-bg: rgba(240, 84, 9, 0.1);

    /* Secondary Colors - Dark Theme */
    --ldt-secondary: #5BA3C7; /* Brighter blue for dark mode */
    --ldt-secondary-dark: #4A8DAF; /* Darker blue for gradients */
    --ldt-secondary-light: #7AB5D6; /* Light blue for backgrounds */
    --ldt-secondary-bg: rgba(91, 163, 199, 0.1);

    /* Status Colors - Dark Theme */
    --ldt-success: #51C88A; /* Brighter green for dark mode */
    --ldt-success-dark: #3FA771; /* Darker green */
    --ldt-success-light: #7FD9A8; /* Light green */
    --ldt-success-bg: rgba(81, 200, 138, 0.1);

    --ldt-warning: #FBBF24; /* Brighter amber for dark mode */
    --ldt-warning-dark: #F59E0B; /* Darker amber */
    --ldt-warning-light: #FCD34D; /* Light amber */
    --ldt-warning-bg: rgba(251, 191, 36, 0.1);

    --ldt-danger: #FF6B6B; /* Brighter red for dark mode */
    --ldt-danger-dark: #F97676; /* Darker red */
    --ldt-danger-light: #FF8787; /* Light red */
    --ldt-danger-bg: rgba(255, 107, 107, 0.1);

    --ldt-info: #3B82F6; /* Brighter blue for dark mode */
    --ldt-info-dark: #1D4ED8; /* Darker blue */
    --ldt-info-light: #60A5FA; /* Light blue */
    --ldt-info-bg: rgba(59, 130, 246, 0.1);
}

/* Dark mode sidebar styling */
body.dark-mode .sidenav {
    background: linear-gradient(135deg, #0F172A 0%, #030712 100%);
}

body.dark-mode .sidenav a {
    color: var(--ldt-dark);
}

body.dark-mode .sidenav a:hover {
    background-color: rgba(240, 84, 9, 0.15);
    color: var(--ldt-primary);
}

body.dark-mode .sidenav-section-title {
    color: var(--ldt-grey);
}

body.dark-mode .sidenav-user-section {
    border-top-color: var(--ldt-border);
}

/* Dark mode component overrides */
body.dark-mode table {
    background: var(--ldt-white);
    box-shadow: var(--shadow-md);
}

body.dark-mode thead {
    background: linear-gradient(135deg, var(--ldt-primary) 0%, var(--ldt-primary-dark) 100%);
}

body.dark-mode th {
    color: #FFFFFF;
}

body.dark-mode td {
    color: var(--ldt-dark);
    border-bottom-color: var(--ldt-border);
}

body.dark-mode tbody tr:hover {
    background-color: var(--ldt-light-grey);
}

body.dark-mode .hoverTable tr:hover td {
    background-color: var(--ldt-light-grey);
    color: var(--ldt-dark);
}

body.dark-mode .table-highlight tr:hover {
    background-color: var(--ldt-light-grey);
}

/* Dark mode table-highlight specific styling */
body.dark-mode .table-highlight {
    background: var(--ldt-white);
}

body.dark-mode .table-highlight thead {
    background: linear-gradient(135deg, #546E7A 0%, #455A64 100%);
}

body.dark-mode .table-highlight th {
    color: #FFFFFF !important;
    padding: 1rem;
    text-align: left;
    border: none;
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: 0.025em;
}

body.dark-mode .table-highlight td {
    color: var(--ldt-dark);
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--ldt-border);
}

body.dark-mode .table-highlight tbody tr {
    transition: all var(--transition-fast);
}

body.dark-mode .table-highlight tbody tr:hover {
    background-color: var(--ldt-light-grey);
}

body.dark-mode .attendance-summary table {
    background-color: var(--ldt-white);
}

body.dark-mode .attendance-summary thead {
    background: linear-gradient(135deg, var(--ldt-secondary) 0%, var(--ldt-secondary-dark) 100%);
}

/* Dark mode form inputs */
body.dark-mode input[type="text"],
body.dark-mode input[type="email"],
body.dark-mode input[type="password"],
body.dark-mode input[type="search"],
body.dark-mode input[type="number"],
body.dark-mode input[type="date"],
body.dark-mode textarea,
body.dark-mode select {
    background-color: #1F2937;
    color: var(--ldt-dark);
    border-color: var(--ldt-border);
}

body.dark-mode input[type="text"]:focus,
body.dark-mode input[type="email"]:focus,
body.dark-mode input[type="password"]:focus,
body.dark-mode input[type="search"]:focus,
body.dark-mode input[type="number"]:focus,
body.dark-mode input[type="date"]:focus,
body.dark-mode textarea:focus,
body.dark-mode select:focus {
    background-color: #111827;
    border-color: var(--ldt-primary);
    box-shadow: 0 0 0 3px var(--ldt-primary-bg);
}

/* Dark mode cards and containers */
body.dark-mode .card {
    background-color: #1F2937;
    color: var(--ldt-dark);
    border-color: var(--ldt-border);
}

body.dark-mode .badge {
    background-color: var(--ldt-light-grey);
    color: var(--ldt-dark);
}

body.dark-mode .alert {
    background-color: rgba(17, 24, 39, 0.8);
    border-color: var(--ldt-border);
    color: var(--ldt-dark);
}

body.dark-mode .alert-success {
    background-color: rgba(81, 200, 138, 0.15);
    border-color: var(--ldt-success);
    color: var(--ldt-success-light);
}

body.dark-mode .alert-warning {
    background-color: rgba(251, 191, 36, 0.15);
    border-color: var(--ldt-warning);
    color: var(--ldt-warning-light);
}

body.dark-mode .alert-danger {
    background-color: rgba(255, 107, 107, 0.15);
    border-color: var(--ldt-danger);
    color: var(--ldt-danger-light);
}

body.dark-mode .alert-info {
    background-color: rgba(59, 130, 246, 0.15);
    border-color: var(--ldt-info);
    color: var(--ldt-info-light);
}

/* Dark mode pagination and navigation */
body.dark-mode .pagination {
    background-color: transparent;
}

body.dark-mode .pagination a {
    background-color: var(--ldt-light-grey);
    color: var(--ldt-dark);
    border-color: var(--ldt-border);
}

body.dark-mode .pagination a:hover {
    background-color: var(--ldt-primary);
    color: #FFFFFF;
    border-color: var(--ldt-primary);
}

body.dark-mode .pagination .active {
    background-color: var(--ldt-primary);
    border-color: var(--ldt-primary);
    color: #FFFFFF;
}

/* Dark mode tabs */
body.dark-mode .nav-tabs {
    border-bottom-color: var(--ldt-border);
}

body.dark-mode .nav-tabs .nav-link {
    color: var(--ldt-grey);
    border-bottom-color: transparent;
}

body.dark-mode .nav-tabs .nav-link:hover {
    color: var(--ldt-dark);
    border-bottom-color: var(--ldt-primary);
}

body.dark-mode .nav-tabs .nav-link.active {
    color: var(--ldt-grey);
    background-color: var(--ldt-light-grey);
    border-bottom-color: var(--ldt-primary);
}

/* Dark mode code/pre blocks */
body.dark-mode pre {
    background-color: #0F172A;
    color: var(--ldt-dark);
    border-color: var(--ldt-border);
}

body.dark-mode code {
    background-color: #1F2937;
    color: var(--ldt-primary-light);
}

/* Dark mode datatable */
body.dark-mode .dataTables_wrapper {
    color: var(--ldt-dark);
}

body.dark-mode .dataTables_length,
body.dark-mode .dataTables_filter,
body.dark-mode .dataTables_info,
body.dark-mode .dataTables_paginate {
    color: var(--ldt-dark);
}

body.dark-mode .dataTables_paginate .paginate_button {
    background-color: var(--ldt-light-grey);
    color: var(--ldt-dark);
    border-color: var(--ldt-border);
}

body.dark-mode .dataTables_paginate .paginate_button:hover {
    background-color: var(--ldt-primary);
    color: #FFFFFF;
    border-color: var(--ldt-primary);
}

body.dark-mode .dataTables_paginate .paginate_button.current {
    background-color: var(--ldt-primary);
    color: #FFFFFF;
    border-color: var(--ldt-primary);
}


/* ==========================================================================
   2. RESET & BASE STYLES
   ========================================================================== */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    font-size: 0.9375rem; /* 15px - improved from 11pt */
    line-height: 1.6;
    color: var(--ldt-dark);
    background-color: var(--ldt-lighter-grey);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Remove default margins and padding */
h1, h2, h3, h4, h5, h6, p, ul, ol, li {
    margin-top: 0;
}

/* ==========================================================================
   3. TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    color: var(--ldt-dark);
    margin-bottom: 1rem;
    font-weight: 600;
    font-family: var(--font-sans);
    line-height: 1.3;
    letter-spacing: -0.01em;
}

h1 {
    font-size: 2rem; /* 32px - modern and bold */
    color: var(--ldt-primary);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 1.5rem; /* 24px */
    color: var(--ldt-dark);
    border-bottom: 3px solid var(--ldt-primary);
    padding-bottom: 0.75rem;
    margin-bottom: 1.5rem;
}

h3 {
    font-size: 1.25rem; /* 20px */
    color: var(--ldt-dark);
    margin-bottom: 1rem;
}

h4, h5 {
    font-size: 1.125rem; /* 18px */
    color: var(--ldt-dark);
}

h6 {
    font-size: 1rem; /* 16px */
    font-weight: 600;
    color: var(--ldt-grey);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

p {
    margin-bottom: 1rem;
    color: var(--ldt-grey);
}

small {
    font-size: 0.875rem; /* 14px */
    color: var(--ldt-grey);
}

strong {
    font-weight: 600;
    color: var(--ldt-dark);
}

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

a:hover {
    color: var(--ldt-primary-dark);
}

/* ==========================================================================
   4. LAYOUT - Header, Sidebar, Main Container
   ========================================================================== */

/* Header - Modern and Responsive */
.main-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    padding: 1rem var(--spacing-lg);
    background: var(--ldt-white);
    box-shadow: var(--shadow-md);
    flex-wrap: wrap;
    gap: var(--spacing-md);
    z-index: 100;
    position: sticky;
    top: 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    order: 1;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    order: 3;
    flex: 1;
    justify-content: flex-end;
}

.site-title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    color: var(--ldt-dark);
    order: 2;
    flex: 5;
}

.logo {
    height: 60px;
    width: auto;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

.menu-toggle {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--ldt-primary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border: none;
    background: transparent;
    transition: all var(--transition-fast);
    display: block;
}

.menu-toggle:hover {
    background-color: rgba(240, 84, 9, 0.1);
    transform: scale(1.1);
}

/* Dark Mode Toggle Button */
.dark-mode-toggle-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0.5rem 0.5rem 0.5rem;
    /*    border-top: 1px solid var(--ldt-border); */
}

.dark-mode-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--ldt-border);
    background-color: transparent;
    color: var(--ldt-grey);
    cursor: pointer;
    font-size: 1.5rem;
    transition: all var(--transition-base);
}

.dark-mode-toggle:hover {
    background-color: var(--ldt-light-grey);
    color: var(--ldt-primary);
    border-color: var(--ldt-primary);
}

.dark-mode-toggle:focus {
    outline: 2px solid var(--ldt-primary);
    outline-offset: 2px;
}

.mode-icon {
    display: inline-block;
    transition: transform var(--transition-base);
}

.dark-mode-toggle:hover .mode-icon {
    transform: scale(1.1);
}

/* Sidebar Navigation - Modern */
.sidenav {
    height: 100vh;
    width: 240px;
    position: fixed;
    z-index: 1000;
    top: 0;
    left: -240px;
    background: linear-gradient(135deg, var(--ldt-dark) 0%, #0f172a 100%);
    overflow-y: auto;
    overflow-x: hidden;
    /*    padding-top: 80px; */
    box-shadow: var(--shadow-xl);
    transition: left 0.3s ease !important;
    display: flex;
    flex-direction: column;
}

.sidenav.open {
    left: 0 !important;
}

.sidenav a {
    padding: var(--spacing-md) var(--spacing-md);
    text-decoration: none;
    font-size: 0.95rem;
    color: #e5e7eb;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-fast);
    border-left: 4px solid transparent;
    position: relative;
}

.sidenav a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-left-color: var(--ldt-primary);
    color: var(--ldt-white);
    padding-left: calc(var(--spacing-lg) + 4px);
}

.sidenav a.active {
    background-color: rgba(240, 84, 9, 0.15);
    border-left-color: var(--ldt-primary);
    color: var(--ldt-primary);
    font-weight: 600;
}

.sidenav .closebtn {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 2rem;
    background: transparent;
    border: none;
    color: var(--ldt-white);
    cursor: pointer;
    padding: 0;
    transition: color var(--transition-fast);
}

.sidenav .closebtn:hover {
    color: var(--ldt-primary);
}

/* Sidebar Search Form */
.sidenav form {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem var(--spacing-md);
    margin: var(--spacing-sm) 0;
    border-radius: var(--radius-md);
}

.sidenav form input {
    width: 100%;
    padding: 0.375rem var(--spacing-sm);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.95);
    color: var(--ldt-dark);
    margin-bottom: 0.25rem;
    font-family: var(--font-sans);
    font-size: 0.875rem;
}

.sidenav form input::placeholder {
    color: var(--ldt-grey);
}

.sidenav form input:focus {
    outline: none;
    background: var(--ldt-white);
    border-color: var(--ldt-primary);
    box-shadow: 0 0 0 2px rgba(240, 84, 9, 0.2);
}

.sidenav form button {
    width: 100%;
    padding: 0.375rem;
    background: var(--ldt-primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.8rem;
    transition: background var(--transition-fast);
}

.sidenav form button:hover {
    background: var(--ldt-primary-dark);
}

/* Main Content Area */
#main {
    transition: margin-left var(--transition-base);
    padding: var(--spacing-lg);
    min-height: 100vh;
    background: var(--ldt-lighter-grey);
}

#main.sidebar-open {
    margin-left: 240px;
}

#content {
    transition: margin-left var(--transition-base);
    padding: 0 var(--spacing-lg);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md);
    width: 100%;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

/* ==========================================================================
   5. FORMS - Modern Input Styling
   ========================================================================== */
form {
    background: var(--ldt-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    max-width: min(1200px, 90vw);
    margin: 0 auto;
}

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

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

.form-group .help-text {
    font-size: 0.875rem;
    color: var(--ldt-grey);
    margin-top: 0.25rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--ldt-dark);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

label:hover {
    color: var(--ldt-primary);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="password"],
input[type="date"],
input[type="time"],
input[type="number"],
input[type="url"],
textarea,
select {
    width: 100%;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    border: 2px solid var(--ldt-border);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-family: var(--font-sans);
    transition: all var(--transition-fast);
    background: var(--ldt-white);
    color: var(--ldt-dark);
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
input[type="tel"]::placeholder,
input[type="password"]::placeholder,
input[type="date"]::placeholder,
input[type="time"]::placeholder,
input[type="number"]::placeholder,
input[type="url"]::placeholder,
textarea::placeholder {
    color: var(--ldt-grey);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="password"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
input[type="number"]:focus,
input[type="url"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--ldt-primary);
    box-shadow: 0 0 0 3px rgba(240, 84, 9, 0.1);
    background: #fafafa;
}

textarea {
    resize: vertical;
    min-height: 120px;
    font-family: var(--font-sans);
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.2em;
    padding-right: 2.5rem;
    cursor: pointer;
}

/* Checkboxes and Radios */
input[type="checkbox"],
input[type="radio"] {
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.5rem;
    cursor: pointer;
    accent-color: var(--ldt-primary);
}

/* Error States */
.field-error {
    border-color: var(--ldt-danger) !important;
}

.error-message {
    color: var(--ldt-danger);
    font-size: 0.875rem;
    margin-top: -0.75rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.error-message:before {
    content: "⚠";
}

/* Success States */
input.success,
select.success,
textarea.success {
    border-color: var(--ldt-success);
}

/* ==========================================================================
   6. BUTTONS - Modern with Better Hover States
   ========================================================================== */
.btn,
input[type="submit"],
button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    font-family: var(--font-sans);
    white-space: nowrap;
    user-select: none;
    position: relative;
}

/* Primary Button */
.btn-primary,
input[type="submit"] {
    background: linear-gradient(135deg, var(--ldt-primary) 0%, var(--ldt-primary-dark) 100%);
    color: var(--ldt-white);
    box-shadow: 0 4px 6px rgba(240, 84, 9, 0.2);
}

.btn-primary:hover,
input[type="submit"]:hover {
    background: linear-gradient(135deg, var(--ldt-primary-dark) 0%, #b83a06 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 12px rgba(240, 84, 9, 0.3);
}

.btn-primary:active,
input[type="submit"]:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(240, 84, 9, 0.2);
}

/* Secondary Button */
.btn-secondary {
    background: var(--ldt-dark);
    color: var(--ldt-white);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--ldt-dark) 0%, #383838 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.btn-secondary:active {
    transform: translateY(0);
}

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

.btn-success:hover {
    background: #0d9e6f;
    transform: translateY(-2px);
}

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

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

/* Link Button */
.btn-link {
    background: transparent;
    color: var(--ldt-primary);
    text-decoration: underline;
}

.btn-link:hover {
    color: var(--ldt-primary-dark);
}

/* Small Button */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
}

/* Large Button */
.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* Full Width Button */
.btn-block {
    width: 100%;
}

/* Button Loading State */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin: -8px 0 0 -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* Button Group */
.btn-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: var(--spacing-md);
}

/* ==========================================================================
   7. TABLES - Responsive & Modern
   ========================================================================== */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-xl);
    background: var(--ldt-white);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

thead {
    background: linear-gradient(135deg, #546E7A 0%, #455A64 100%);
}

th {
    padding: 1rem;
    text-align: left;
    border: none;
    color: #FFFFFF !important;
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: 0.025em;
}

td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--ldt-border);
    color: var(--ldt-grey);
}

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

tbody tr:hover {
    background-color: rgba(240, 84, 9, 0.05);
}

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

/* Highlighted Table Rows */
.hoverTable tr:hover td {
    background-color: rgba(240, 84, 9, 0.08);
    color: var(--ldt-dark);
}

.table-highlight tr:hover {
    background-color: rgba(61, 125, 153, 0.08);
}

/* Table Actions */
.actions {
    display: flex;
    gap: 0.5rem;
    text-align: right;
    flex-wrap: wrap;
}

td.actions {
    white-space: nowrap;
    width: auto;
}

td.actions .btn {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
}

.table-responsive {
    margin: 0;
    padding: 0;
    overflow-x: auto;
    border-radius: var(--radius-lg);
    -webkit-overflow-scrolling: touch;
}

.table-responsive table {
    min-width: 500px;
    margin-bottom: 0;
}

/* Attendance Summary Table */
.attendance-summary {
    margin: var(--spacing-xl) 0;
}

.attendance-summary table {
    background-color: var(--ldt-lighter-grey);
}

.attendance-summary thead {
    background: linear-gradient(135deg, var(--ldt-secondary) 0%, var(--ldt-secondary-dark) 100%);
}

.attendance-summary th {
    text-align: center;
    padding: 1rem;
}

.attendance-summary td {
    text-align: center;
    padding: 1rem;
}

.attendance-summary td strong {
    color: var(--ldt-success);
    font-weight: 700;
}

/* ==========================================================================
   8. CARDS - Modern Component Styling
   ========================================================================== */
.card {
    background: var(--ldt-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    border: 1px solid var(--ldt-border);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #f3f4f6 100%);
    /*    padding: var(--spacing-lg); */
    padding: 1rem 1.5rem;
    border-bottom: 2px solid var(--ldt-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    margin: 0;
    color: var(--ldt-primary);
    font-size: 1.25rem;
    flex: 1;
}

.card-header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

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

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--ldt-border);
    background: var(--ldt-lighter-grey);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ==========================================================================
   9. MESSAGES & ALERTS - Modern Notifications
   ========================================================================== */
.messages {
    list-style: none;
    padding: 0;
    margin: 0 auto var(--spacing-lg);
    width: 100%;
    max-width: 600px;
    z-index: 500;
}

#messages-container {
    position: fixed !important;
    top: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1050;
    width: max-content;
    max-width: 90vw;
}

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

.message {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-left: 4px solid currentColor;
    font-weight: 500;
    animation: message-pop 0.2s ease-out;
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-md) calc(var(--spacing-lg) + 4px);
    padding-right: 2.5rem;
    position: relative;
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-md);
    opacity: 1;
    transition: opacity var(--transition-slow) ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.message-success {
    background-color: #ECFDF5;
    color: #10B981;
    border-left-color: var(--ldt-success);
}

.message-warning {
    background-color: #FFFBEB;
    color: #92400e;
    border-left-color: var(--ldt-warning);
}

.message-error {
    background-color: #FEE2E2;
    color: #EF4444;
    border-left-color: var(--ldt-danger);
}

.message-info {
    background-color: #EFF6FF;
    color: #3B82F6;
    border-left-color: var(--ldt-info);
}

.message-close {
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
    color: inherit;
    padding: 0;
}

.message-close:hover {
    opacity: 1;
}

/* Alert Styles */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid transparent;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.alert-success {
    background-color: var(--ldt-success-light);
    border-left-color: var(--ldt-success);
    color: var(--ldt-success);
}

.alert-error,
.alert-danger {
    background-color: var(--ldt-danger-light);
    border-left-color: var(--ldt-danger);
    color: var(--ldt-danger);
}

.alert-warning {
    background-color: var(--ldt-warning-light);
    border-left-color: var(--ldt-warning);
    color: #92400e;
}

.alert-info {
    background-color: var(--ldt-info-light);
    border-left-color: var(--ldt-info);
    color: var(--ldt-info);
}

.alert-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

/* ==========================================================================
   10. BADGES & STATUS INDICATORS
   ========================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    white-space: nowrap;
    letter-spacing: 0.025em;
}

.badge-primary {
    background-color: rgba(240, 84, 9, 0.1);
    color: var(--ldt-primary);
}

.badge-secondary {
    background-color: rgba(61, 125, 153, 0.1);
    color: var(--ldt-secondary);
}

.badge-success {
    background-color: var(--ldt-success-light);
    color: var(--ldt-success);
}

.badge-danger {
    background-color: var(--ldt-danger-light);
    color: var(--ldt-danger);
}

.badge-warning {
    background-color: var(--ldt-warning-light);
    color: #92400e;
}

.badge-info {
    background-color: var(--ldt-info-light);
    color: var(--ldt-info);
}

/* Status Indicator Dot */
.badge.dot {
    padding: 0.5rem;
}

.badge.dot::before {
    content: '';
    width: 0.65rem;
    height: 0.65rem;
    border-radius: 50%;
    background: currentColor;
}

/* Pill Badge */
.badge-pill {
    border-radius: var(--radius-full);
    padding: 0.5rem 1rem;
}

/* ==========================================================================
   11. NAVIGATION - Enhanced with Modern Tabs
   ========================================================================== */
nav {
    margin-bottom: var(--spacing-xl);
}

nav a {
    color: var(--ldt-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
    position: relative;
}

nav a:hover {
    color: var(--ldt-primary-dark);
}

nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background: var(--ldt-primary);
    transition: width var(--transition-fast);
}

nav a:hover::after {
    width: 100%;
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid var(--ldt-border);
    margin-bottom: var(--spacing-lg);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.nav-tab {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--ldt-grey);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-tab:hover {
    color: var(--ldt-primary);
    border-bottom-color: rgba(240, 84, 9, 0.3);
}

.nav-tab.active,
.nav-tab-selected {
    color: var(--ldt-primary);
    border-bottom-color: var(--ldt-primary);
}

/* Breadcrumb Navigation */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.breadcrumb-item {
    color: var(--ldt-grey);
}

.breadcrumb-item.active {
    color: var(--ldt-dark);
    font-weight: 600;
}

.breadcrumb-item + .breadcrumb-item::before {
    display: inline-block;
    padding: 0 var(--spacing-sm);
    color: var(--ldt-border);
    content: "/";
}

/* ==========================================================================
   12. GRID LAYOUTS - Responsive Grid System
   ========================================================================== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-auto-flow: row;
}

.grid-cols-1 {
    grid-template-columns: 1fr;
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Flex Layout */
.flex {
    display: flex;
}

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

.flex-wrap {
    flex-wrap: wrap;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

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

.gap-1 {
    gap: var(--spacing-sm);
}

.gap-2 {
    gap: var(--spacing-md);
}

.gap-3 {
    gap: var(--spacing-lg);
}

.gap-4 {
    gap: var(--spacing-xl);
}

/* ==========================================================================
   13. UTILITY CLASSES - Spacing, Text, and Display
   ========================================================================== */

/* Margin Utilities */
.m-auto {
    margin: auto;
}

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

.my-auto {
    margin-top: auto;
    margin-bottom: auto;
}

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}

.mt-4 {
    margin-top: var(--spacing-xl);
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.mb-3 {
    margin-bottom: var(--spacing-lg);
}

.mb-4 {
    margin-bottom: var(--spacing-xl);
}

.ml-1 {
    margin-left: var(--spacing-sm);
}

.ml-2 {
    margin-left: var(--spacing-md);
}

.ml-3 {
    margin-left: var(--spacing-lg);
}

.ml-4 {
    margin-left: var(--spacing-xl);
}

.mr-1 {
    margin-right: var(--spacing-sm);
}

.mr-2 {
    margin-right: var(--spacing-md);
}

.mr-3 {
    margin-right: var(--spacing-lg);
}

.mr-4 {
    margin-right: var(--spacing-xl);
}

/* Padding Utilities */
.p-0 {
    padding: 0;
}

.p-1 {
    padding: var(--spacing-sm);
}

.p-2 {
    padding: var(--spacing-md);
}

.p-3 {
    padding: var(--spacing-lg);
}

.p-4 {
    padding: var(--spacing-xl);
}

.px-1 {
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
}

.px-2 {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.px-3 {
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
}

.py-1 {
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}

.py-2 {
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-md);
}

.py-3 {
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
}

/* Text Alignment */
.text-left {
    text-align: left;
}

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

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

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

/* Text Styling */
.font-bold {
    font-weight: 700;
}

.font-semibold {
    font-weight: 600;
}

.font-medium {
    font-weight: 500;
}

.font-normal {
    font-weight: 400;
}

.font-light {
    font-weight: 300;
}

.uppercase {
    text-transform: uppercase;
}

.lowercase {
    text-transform: lowercase;
}

.capitalize {
    text-transform: capitalize;
}

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

/* Text Colors */
.text-primary {
    color: var(--ldt-primary);
}

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

.text-success {
    color: var(--ldt-success);
}

.text-danger {
    color: var(--ldt-danger);
}

.text-warning {
    color: var(--ldt-warning);
}

.text-info {
    color: var(--ldt-info);
}

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

.text-dark {
    color: var(--ldt-dark);
}

.text-light {
    color: var(--ldt-light);
}

/* Background Colors */
.bg-primary {
    background-color: var(--ldt-primary);
    color: white;
}

.bg-secondary {
    background-color: var(--ldt-secondary);
    color: white;
}

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

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

.bg-warning {
    background-color: var(--ldt-warning);
    color: white;
}

.bg-info {
    background-color: var(--ldt-info);
    color: white;
}

.bg-light {
    background-color: var(--ldt-light);
}

.bg-lighter {
    background-color: var(--ldt-lighter-grey);
}

/* Display Utilities */
.d-none {
    display: none;
}

.d-inline {
    display: inline;
}

.d-inline-block {
    display: inline-block;
}

.d-block {
    display: block;
}

.d-flex {
    display: flex;
}

.d-grid {
    display: grid;
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

/* Visibility Utilities */
.invisible {
    visibility: hidden;
}

.visible {
    visibility: visible;
}

/* Opacity Utilities */
.opacity-50 {
    opacity: 0.5;
}

.opacity-75 {
    opacity: 0.75;
}

.opacity-100 {
    opacity: 1;
}

/* Width/Height Utilities */
.w-full {
    width: 100%;
}

.w-auto {
    width: auto;
}

.h-auto {
    height: auto;
}

/* ==========================================================================
   14. ANIMATIONS - Modern Transitions & Effects
   ========================================================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-base) ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-20px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.slide-in {
    animation: slideIn var(--transition-base) ease-out;
}

@keyframes slideInRight {
    from {
        transform: translateX(20px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.slide-in-right {
    animation: slideInRight var(--transition-base) ease-out;
}

@keyframes scalePulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.pulse {
    animation: scalePulse 2s ease-in-out infinite;
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.shimmer-loading {
    animation: shimmer 2s infinite;
    background: linear-gradient(90deg, #f5f5f5 25%, #e5e5e5 50%, #f5f5f5 75%);
    background-size: 1000px 100%;
}

/* ==========================================================================
   15. ACCESSIBILITY - Keyboard Navigation & Screen Readers
   ========================================================================== */

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--ldt-primary);
    outline-offset: 2px;
    border-radius: var(--radius-md);
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: more) {
    :root {
        --ldt-primary: #c84a07;
        --ldt-secondary: #2a5a74;
        --ldt-dark: #000000;
        --ldt-border: #333333;
    }
}

/* Skip to content link */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--ldt-primary);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    z-index: 100;
    border-radius: var(--radius-md);
}

.skip-to-content:focus {
    top: 1rem;
    left: 1rem;
}

/* ==========================================================================
   16. RESPONSIVE DESIGN - Mobile-First Approach
   ========================================================================== */

/* Mobile: 320px and up (default styles) */
@media screen and (max-width: 640px) {
    /* Adjust typography for smaller screens */
    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    h3 {
        font-size: 1.125rem;
    }

    /* Adjust header */
    .main-header {
        padding: 0.75rem;
        gap: 0.5rem;
    }

    .menu-toggle {
        display: block;
    }

    .site-title {
        font-size: 1.25rem;
        order: 1;
    }

    .logo {
        height: 50px;
    }

    /* Hide some elements on mobile */
    .header-right {
        order: 3;
        flex: 0 0 auto;
    }

    /* Adjust content padding */
    #main {
        padding: var(--spacing-md);
    }

    #content {
        padding: 0 var(--spacing-md);
    }

    /* Adjust forms */
    form {
        padding: var(--spacing-lg);
        max-width: 100%;
    }

    /* Stack form groups */
    .form-group {
        margin-bottom: var(--spacing-md);
    }

    /* Full-width button on mobile */
    .btn {
        width: 100%;
        justify-content: center;
    }

    .btn-group {
        flex-direction: column;
    }

    /* Adjust tables - horizontal scroll on small screens */
    table {
        font-size: 0.875rem;
    }

    th, td {
        padding: 0.75rem 0.5rem;
    }

    /* Stack tabs */
    .nav-tabs {
        flex-wrap: wrap;
        gap: 0.25rem;
    }

    .nav-tab {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.875rem;
    }

    /* Adjust cards */
    .card-body {
        padding: var(--spacing-md);
    }

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

    .card-header h3 {
        font-size: 1.125rem;
    }

    /* Adjust grid layouts */
    .grid {
        gap: var(--spacing-md);
    }

    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }

    /* Adjust messages width */
    .messages {
        max-width: 100%;
        width: 95%;
    }

    /* Adjust page header */
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    /* Action buttons in tables */
    .actions {
        flex-direction: column;
    }

    td.actions {
        white-space: normal;
    }
}

/* Tablet: 768px and up */
@media screen and (min-width: 641px) and (max-width: 1024px) {
    h1 {
        font-size: 1.875rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .main-header {
        padding: 1rem;
    }

    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    #content {
        padding: 0 var(--spacing-lg);
    }

    .messages {
        width: 90%;
    }

    .sidenav {
        width: 240px;
        left: -240px;
    }
}

/* Desktop: 1024px and up */
@media screen and (min-width: 1025px) {
    /* Desktop styles */
    .grid-cols-4 {
        grid-template-columns: repeat(4, 1fr);
    }

    .grid-cols-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Extra Large: 1400px and up */
@media screen and (min-width: 1401px) {
    .container {
        max-width: 1380px;
    }

    #content {
        padding: 0 4rem;
    }
}

/* Landscape mode adjustments */
@media screen and (max-height: 600px) and (orientation: landscape) {
    .main-header {
        padding: 0.5rem;
    }

    .logo {
        height: 40px;
    }

    form {
        padding: var(--spacing-md);
    }

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

/* Touch device adjustments */
@media (hover: none) and (pointer: coarse) {
    button,
    .btn,
    a {
        padding: 0.875rem 1.5rem;
    }

    /* Increase touch target sizes */
    input[type="checkbox"],
    input[type="radio"] {
        width: 1.5rem;
        height: 1.5rem;
    }
}

/* ==========================================================================
   17. PRINT STYLES - Optimize for Printing
   ========================================================================== */
@media print {
    /* Hide navigation and interactive elements */
    .sidenav,
    .menu-toggle,
    .btn,
    .logout-btn,
    .actions,
    .message-close,
    nav,
    .skip-to-content {
        display: none !important;
    }

    /* Reset colors for printing */
    body {
        background: white;
        color: black;
        font-size: 12pt;
    }

    /* Ensure content is visible */
    #main {
        margin-left: 0 !important;
        padding: 0;
        min-height: auto;
    }

    #content {
        padding: 0 !important;
    }

    /* Prevent page breaks inside elements */
    table,
    .card,
    form,
    .page-header {
        page-break-inside: avoid;
    }

    /* Show URLs for links */
    a[href]:after {
        content: " (" attr(href) ")";
    }

    /* Remove shadows and adjust borders for cleaner print */
    .card,
    table,
    form {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    /* Adjust heading sizes for print */
    h1 {
        font-size: 24pt;
    }

    h2 {
        font-size: 20pt;
    }

    h3 {
        font-size: 16pt;
    }

    /* Make header sticky not needed in print */
    .main-header {
        position: static;
        box-shadow: none;
        border: 1px solid #ccc;
    }

    /* Ensure tables have visible borders */
    table, th, td {
        border: 1px solid #000;
    }
}

/* Additional sidebar enhancements */
.sidenav-section {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    flex: 1;
    overflow-y: auto;
}

.sidenav-user-section {
    padding: 0.25rem 0.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.sidenav-user-name {
    margin: 0.35rem 0 0.5rem 0;
    color: #e5e7eb;
    font-weight: 600;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    justify-content: center;
    text-align: center;
    line-height: 1.2;
}

.logout-link {
    display: inline-flex;
    align-items: center;
    gap: 0.1rem;
    padding: 0.15rem 0.15rem;
    background: rgba(240, 84, 9, 0.2);
    border-radius: 0.25rem;
    color: var(--ldt-primary);
    font-weight: 300;
    font-size: 0.75rem;
    line-height: 0.25;
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.logout-link:hover {
    background: rgba(240, 84, 9, 0.3);
    color: var(--ldt-white);
}

.htmx-link {
    cursor: pointer;
}

.nav-link {
    cursor: pointer;
    padding: var(--spacing-md) var(--spacing-lg);
    text-decoration: none;
    font-size: 0.95rem;
    color: #e5e7eb;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-fast);
    border-left: 4px solid transparent;
    position: relative;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-left-color: var(--ldt-primary);
    color: var(--ldt-white);
    padding-left: calc(var(--spacing-lg) + 4px);
}

.nav-link.active {
    background-color: rgba(240, 84, 9, 0.15);
    border-left-color: var(--ldt-primary);
    color: var(--ldt-primary);
    font-weight: 600;
}

/* Notifications link styling */
.notifications-link {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-sm);
    text-decoration: none;
    color: var(--ldt-dark);
    font-size: 1.5rem;
    transition: transform var(--transition-fast);
}

.notifications-link:hover {
    transform: scale(1.15);
}

.badge-notification {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--ldt-danger);
    color: white;
    border-radius: var(--radius-full);
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    min-width: 20px;
    text-align: center;
}