/*
 * Cyprus ATC SMS - Main Stylesheet
 * Version: 2.0.0
 * Description: Consolidated styles for the Safety Management System
 * All inline styles from individual pages have been moved here.
 */

/* ========================================
   VARIABLES & CUSTOM PROPERTIES
   ======================================== */
:root {
    /* Colors */
    --primary-blue: #3B82F6;
    --primary-blue-dark: #2563EB;
    --primary-blue-light: #60A5FA;

    --secondary-slate: #1E293B;
    --secondary-slate-light: #334155;

    --success-green: #10B981;
    --warning-yellow: #F59E0B;
    --danger-red: #EF4444;
    --info-blue: #3B82F6;

    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --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);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;

    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ========================================
   GLOBAL STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--gray-900);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   LOGIN PAGE
   ======================================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 50%, #1e40af 100%);
    background-attachment: fixed;
}

.login-container {
    max-width: 28rem;
    width: 100%;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo-circle {
    display: inline-block;
    padding: 1rem;
    background-color: white;
    border-radius: 9999px;
    margin-bottom: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.login-logo-svg {
    width: 4rem;
    height: 4rem;
    color: #2563EB;
}

.login-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.login-subtitle {
    color: #93c5fd;
    font-size: 0.95rem;
}

.login-card {
    background: white;
    border-radius: 1rem;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
    overflow: hidden;
}

.login-card-header {
    background: linear-gradient(to right, #2563EB, #1d4ed8);
    padding: 1.5rem;
    text-align: center;
}

.login-card-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin: 0;
}

.login-card-header p {
    color: #bfdbfe;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.login-card-body {
    padding: 2rem;
}

.login-error {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: #FEF2F2;
    border-left: 4px solid var(--danger-red);
    color: #991B1B;
    border-radius: var(--radius-md);
}

.login-error p { font-weight: 500; }

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.login-field {
    display: flex;
    flex-direction: column;
}

.login-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.login-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: var(--font-family);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.login-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

.login-btn {
    width: 100%;
    background: linear-gradient(to right, #2563EB, #1d4ed8);
    color: white;
    padding: 0.75rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 6px rgba(37,99,235,0.25);
    font-family: var(--font-family);
}

.login-btn:hover {
    background: linear-gradient(to right, #1d4ed8, #1e40af);
    box-shadow: 0 6px 12px rgba(37,99,235,0.35);
    transform: translateY(-1px);
}

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

.login-card-footer {
    background-color: var(--gray-50);
    padding: 1rem 2rem;
    border-top: 1px solid var(--gray-100);
    text-align: center;
}

.login-demo-title {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.login-demo-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.login-demo-item {
    background: white;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    font-size: 0.75rem;
}

.login-demo-role { font-weight: 600; color: var(--gray-800); }
.login-demo-cred { color: var(--gray-500); }

.login-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: #93c5fd;
    font-size: 0.875rem;
}

.login-footer p { margin-top: 0.25rem; }

/* ========================================
   STATUS BADGES
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.65rem;
    font-size: 0.65rem;
    font-weight: 700;
    border-radius: 9999px;
    white-space: nowrap;
    letter-spacing: 0.02em;
    line-height: 1.4;
}

/* Status badges */
.badge-draft { background-color: #F3F4F6; color: #4B5563; border: 1px solid #D1D5DB; }
.badge-pending-review { background-color: #FEF3C7; color: #92400E; border: 1px solid #F59E0B; }
.badge-published { background-color: #D1FAE5; color: #065F46; border: 1px solid #10B981; }
.badge-under-investigation { background-color: #DBEAFE; color: #1E40AF; border: 1px solid #3B82F6; }
.badge-incomplete { background-color: #FFEDD5; color: #9A3412; border: 1px solid #F97316; }
.badge-requires-info { background-color: #EDE9FE; color: #5B21B6; border: 1px solid #8B5CF6; }
.badge-complete { background-color: #A7F3D0; color: #064E3B; border: 1px solid #059669; }
.badge-archived { background-color: #F3F4F6; color: #6B7280; border: 1px solid #9CA3AF; }

/* Severity badges */
.badge-low { background-color: #D1FAE5; color: #065F46; border: 1px solid #10B981; }
.badge-medium { background-color: #FEF3C7; color: #92400E; border: 1px solid #F59E0B; }
.badge-high { background-color: #FEE2E2; color: #991B1B; border: 1px solid #EF4444; }
.badge-critical { background-color: #FEE2E2; color: #991B1B; border: 1px solid #DC2626; font-weight: 800; }

/* Priority badges */
.badge-priority-low { background-color: #D1FAE5; color: #065F46; border: 1px solid #10B981; }
.badge-priority-medium { background-color: #FEF3C7; color: #92400E; border: 1px solid #F59E0B; }
.badge-priority-high { background-color: #FEE2E2; color: #991B1B; border: 1px solid #EF4444; }
.badge-priority-urgent { background-color: #FEE2E2; color: #991B1B; border: 1px solid #DC2626; animation: pulse-urgent 2s infinite; }

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

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background-color: var(--primary-blue); color: white; }
.btn-primary:hover:not(:disabled) { background-color: var(--primary-blue-dark); box-shadow: var(--shadow-md); }
.btn-secondary { background-color: var(--gray-200); color: var(--gray-700); }
.btn-secondary:hover:not(:disabled) { background-color: var(--gray-300); }
.btn-success { background-color: var(--success-green); color: white; }
.btn-success:hover:not(:disabled) { background-color: #059669; }
.btn-danger { background-color: var(--danger-red); color: white; }
.btn-danger:hover:not(:disabled) { background-color: #DC2626; }
.btn-sm { padding: 0.375rem 0.75rem; font-size: var(--font-size-xs); }
.btn-lg { padding: 0.75rem 1.5rem; font-size: var(--font-size-base); }

/* ========================================
   CARDS
   ======================================== */
.card {
    background-color: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.card-header { padding: 1.5rem; border-bottom: 1px solid var(--gray-200); }
.card-body { padding: 1.5rem; }
.card-footer { padding: 1rem 1.5rem; background-color: var(--gray-50); border-top: 1px solid var(--gray-200); }

/* Stats Cards */
.stat-card {
    background-color: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

.stat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.stat-card.stat-blue { border-left-color: var(--primary-blue); }
.stat-card.stat-green { border-left-color: var(--success-green); }
.stat-card.stat-yellow { border-left-color: var(--warning-yellow); }
.stat-card.stat-red { border-left-color: var(--danger-red); }

.stat-value { font-size: var(--font-size-3xl); font-weight: 700; color: var(--gray-800); line-height: 1; }
.stat-label { font-size: var(--font-size-sm); font-weight: 500; color: var(--gray-500); text-transform: uppercase; letter-spacing: 0.05em; }

/* ========================================
   FORM ELEMENTS
   ======================================== */
.form-group { margin-bottom: 1.5rem; }

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: var(--font-size-sm);
    line-height: 1.5;
    color: var(--gray-900);
    background-color: white;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus { outline: none; border-color: var(--primary-blue); box-shadow: 0 0 0 3px rgba(59,130,246,0.1); }
.form-control:disabled { background-color: var(--gray-100); cursor: not-allowed; }

.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

/* ========================================
   ALERTS
   ======================================== */
.alert {
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    border-radius: var(--radius-lg);
    border-left: 4px solid;
}

.alert-success { background-color: #D1FAE5; border-left-color: var(--success-green); color: #065F46; }
.alert-info { background-color: #DBEAFE; border-left-color: var(--info-blue); color: #1E40AF; }
.alert-warning { background-color: #FEF3C7; border-left-color: var(--warning-yellow); color: #92400E; }
.alert-danger { background-color: #FEE2E2; border-left-color: var(--danger-red); color: #991B1B; }

/* ========================================
   TABLES
   ======================================== */
.table-container { overflow-x: auto; border-radius: var(--radius-xl); }

.table { width: 100%; border-collapse: collapse; }
.table thead { background-color: var(--gray-50); }
.table th { padding: 0.75rem 1.5rem; text-align: left; font-size: var(--font-size-xs); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; color: var(--gray-500); }
.table td { padding: 1rem 1.5rem; border-top: 1px solid var(--gray-200); font-size: var(--font-size-sm); }
.table tbody tr:hover { background-color: var(--gray-50); }

/* ========================================
   MODALS
   ======================================== */
.modal-backdrop {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: var(--z-modal-backdrop);
    display: flex; align-items: center; justify-content: center;
    padding: 1rem;
}

.modal {
    background-color: white; border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl); max-width: 600px; width: 100%;
    max-height: 90vh; overflow-y: auto; z-index: var(--z-modal);
}

.modal-header { padding: 1.5rem; border-bottom: 1px solid var(--gray-200); display: flex; align-items: center; justify-content: space-between; }
.modal-title { font-size: var(--font-size-xl); font-weight: 700; color: var(--gray-900); }
.modal-body { padding: 1.5rem; }
.modal-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--gray-200); display: flex; align-items: center; justify-content: flex-end; gap: 0.75rem; }

/* ========================================
   SPINNER
   ======================================== */
.spinner {
    display: inline-block; width: 1rem; height: 1rem;
    border: 2px solid currentColor; border-right-color: transparent;
    border-radius: 50%; animation: spinner-rotate 0.75s linear infinite;
}

@keyframes spinner-rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.spinner-lg { width: 2rem; height: 2rem; border-width: 3px; }

/* ========================================
   TOAST NOTIFICATIONS
   ======================================== */
.toast-container {
    position: fixed; top: 5rem; right: 1rem;
    z-index: var(--z-tooltip);
    display: flex; flex-direction: column; gap: 0.5rem;
}

.toast {
    background-color: white; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl); padding: 1rem 1.25rem;
    min-width: 300px; max-width: 400px; border-left: 4px solid;
    display: flex; align-items: center; gap: 0.75rem;
    animation: toast-slide-in 0.3s ease;
}

@keyframes toast-slide-in {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.toast.toast-success { border-left-color: var(--success-green); }
.toast.toast-error { border-left-color: var(--danger-red); }
.toast.toast-warning { border-left-color: var(--warning-yellow); }
.toast.toast-info { border-left-color: var(--info-blue); }

/* ========================================
   AVATARS
   ======================================== */
.avatar {
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    color: white; font-weight: 600;
}

.avatar-sm { width: 2rem; height: 2rem; font-size: var(--font-size-xs); }
.avatar-md { width: 2.5rem; height: 2.5rem; font-size: var(--font-size-sm); }
.avatar-lg { width: 3rem; height: 3rem; font-size: var(--font-size-base); }

/* ========================================
   BREADCRUMBS
   ======================================== */
.breadcrumb { display: flex; align-items: center; gap: 0.5rem; font-size: var(--font-size-sm); color: var(--gray-500); margin-bottom: 1rem; }
.breadcrumb-item { display: flex; align-items: center; gap: 0.5rem; }
.breadcrumb-item:not(:last-child)::after { content: '/'; color: var(--gray-400); }
.breadcrumb-item a { color: var(--primary-blue); text-decoration: none; }
.breadcrumb-item a:hover { text-decoration: underline; }

/* ========================================
   EMPTY STATE
   ======================================== */
.empty-state { text-align: center; padding: 3rem 1rem; }
.empty-state-icon { width: 4rem; height: 4rem; color: var(--gray-400); margin: 0 auto 1rem; }
.empty-state-title { font-size: var(--font-size-lg); font-weight: 600; color: var(--gray-900); margin-bottom: 0.5rem; }
.empty-state-text { font-size: var(--font-size-sm); color: var(--gray-500); }

/* ========================================
   DATATABLES CUSTOM STYLING
   ======================================== */
.dataTables_wrapper { padding: 1rem 0; }
.dataTables_filter input { margin-left: 0.5rem; padding: 0.5rem; border: 1px solid var(--gray-300); border-radius: var(--radius-md); }
.dataTables_length select { padding: 0.5rem; border: 1px solid var(--gray-300); border-radius: var(--radius-md); margin: 0 0.5rem; }
.dataTables_length { padding: 0.5rem 0.75rem; font-size: 0.875rem; }
.dataTables_info { padding: 0.75rem 0.75rem; font-size: 0.875rem; color: #6B7280; }
.dataTables_filter { padding: 0.5rem 0.75rem; }
.dataTables_paginate { padding: 0.5rem 0.75rem; }

/* ========================================
   ACCESSIBILITY
   ======================================== */
.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: 2px solid var(--primary-blue); outline-offset: 2px; }
button:focus-visible, a:focus-visible { outline-offset: 4px; }

/* ========================================
   AUDIT LOG (was inline in audit-log.php)
   ======================================== */
.change-old { background: #FEE2E2; color: #991B1B; padding: 1px 4px; border-radius: 3px; font-size: 0.8rem; }
.change-new { background: #D1FAE5; color: #065F46; padding: 1px 4px; border-radius: 3px; font-size: 0.8rem; }
.change-field { font-weight: 600; color: #4B5563; font-size: 0.8rem; }

/* ========================================
   BLOG (was inline in blog.php)
   ======================================== */
.blog-card { transition: transform 0.2s, box-shadow 0.2s; }
.blog-card:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(0,0,0,0.12); }
.blog-card.inactive-post { opacity: 0.65; border: 2px dashed #D1D5DB; }
.blog-card.inactive-post:hover { opacity: 0.85; }
.attachment-preview { width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; background: #F3F4F6; border-radius: 8px; }

/* ========================================
   MANAGER DASHBOARD (was inline in manager-dashboard.php)
   ======================================== */
.color-box { width: 20px; height: 20px; display: inline-block; border: 1px solid #333; margin-right: 5px; }
.status-green  { background: #10B981; }
.status-yellow { background: #FBBF24; }
.status-orange { background: #F97316; }
.status-red    { background: #EF4444; }
.status-pink   { background: #EC4899; }
.status-blue   { background: #3B82F6; }
.status-gray   { background: #9CA3AF; }

/* ========================================
   MASTER OVERVIEW (was inline in manager-master-overview.php)
   ======================================== */
.master-table { font-size: 11px; width: 100%; }
.master-table thead th {
    background: #4472C4 !important; color: white !important;
    padding: 12px 8px !important; font-weight: bold !important;
    white-space: nowrap !important; border: 1px solid #3461A8 !important;
    position: sticky !important; top: 0 !important; z-index: 10 !important;
}
.master-table td { padding: 8px 6px; border: 1px solid #ddd; white-space: nowrap; font-size: 12px; }
.master-table tbody tr:hover { background: #F3F4F6; }

/* Legacy cell backgrounds removed — use .badge classes instead */

/* Legacy severity cell backgrounds removed — use .badge classes instead */

.occ-a { background: #DC2626; color: white; font-weight: bold; }
.occ-b { background: #F97316; color: white; }
.occ-c { background: #FBBF24; }
.occ-d { background: #60A5FA; }
.occ-e { background: #10B981; color: white; }
.compact-cell { max-width: 200px; overflow: hidden; text-overflow: ellipsis; }

table.dataTable thead th { background: #4472C4 !important; color: white !important; }
table.dataTable thead .sorting:before,
table.dataTable thead .sorting:after,
table.dataTable thead .sorting_asc:before,
table.dataTable thead .sorting_asc:after,
table.dataTable thead .sorting_desc:before,
table.dataTable thead .sorting_desc:after { color: white !important; }

/* ========================================
   REPORT DETAIL (was inline in report-detail.php)
   ======================================== */
.detail-label {
    font-weight: 600; color: #4B5563; margin-bottom: 0.25rem;
    font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em;
}
.detail-value { color: #1F2937; margin-bottom: 1rem; }

/* ========================================
   SIDEBAR (was inline in sidebar.php)
   ======================================== */
#sidebar { transition: width 0.3s ease, transform 0.3s ease; }
.sidebar-link { transition: all 0.2s ease; }
.toggle-icon { transition: transform 0.3s ease; }

@media (max-width: 767px) {
    #sidebar { transform: translateX(-100%); width: 280px !important; }
    #sidebar.sidebar-mobile-open { transform: translateX(0) !important; }
}

@media (min-width: 768px) {
    .sidebar-collapsed { width: 80px !important; }
    .sidebar-collapsed .sidebar-text { display: none !important; }
    .sidebar-collapsed .sidebar-link {
        justify-content: center !important;
        padding-left: 0 !important; padding-right: 0 !important;
        position: relative;
    }
    .sidebar-collapsed .sidebar-link:hover::after {
        content: attr(title); position: absolute; left: 100%; top: 50%;
        transform: translateY(-50%); margin-left: 10px; padding: 8px 12px;
        background: #1F2937; color: white; border-radius: 6px;
        white-space: nowrap; z-index: 1000; font-size: 12px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    .sidebar-collapsed .toggle-icon { transform: rotate(180deg); }
}

/* ========================================
   MOBILE MENU & OVERLAY
   ======================================== */
.mobile-menu-button {
    display: none;
    position: fixed; top: 1rem; left: 1rem; z-index: 1001;
    background: #3B82F6; color: white; padding: 0.75rem;
    border-radius: 0.5rem; border: none; cursor: pointer;
    box-shadow: 0 4px 12px rgba(59,130,246,0.3);
    transition: all 0.2s;
}
.mobile-menu-button:hover { background: #2563EB; box-shadow: 0 6px 16px rgba(59,130,246,0.4); }
.mobile-menu-button:active { transform: scale(0.95); }

.sidebar-overlay {
    display: none; position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); z-index: 999;
    backdrop-filter: blur(2px);
}
.sidebar-overlay.active { display: block; animation: fadeIn 0.3s; }

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

/* ========================================
   MOBILE RESPONSIVE (< 768px)
   ======================================== */
@media (max-width: 768px) {
    .mobile-menu-button { display: block; }

    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
        box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    }
    .sidebar.active { transform: translateX(0); }

    main {
        margin-left: 0 !important;
        padding: 5rem 1rem 1rem 1rem !important;
        width: 100%;
    }

    header { padding-left: 4rem !important; }

    h1 { font-size: 1.5rem !important; line-height: 2rem !important; }
    h2 { font-size: 1.25rem !important; line-height: 1.75rem !important; }
    h3 { font-size: 1.125rem !important; line-height: 1.5rem !important; }

    .overflow-x-auto { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table { min-width: 600px; font-size: 0.875rem; }
    table th, table td { padding: 0.5rem 0.75rem !important; }

    .grid { grid-template-columns: 1fr !important; }
    .md\:grid-cols-2, .md\:grid-cols-3, .md\:grid-cols-4,
    .lg\:grid-cols-2, .lg\:grid-cols-3, .lg\:grid-cols-4 {
        grid-template-columns: 1fr !important;
    }

    .btn-mobile-full,
    form button[type="submit"],
    form button[type="button"] { width: 100%; margin-bottom: 0.5rem; }

    .card, .bg-white { padding: 1rem !important; margin-bottom: 1rem; }
    .stat-card { padding: 1rem !important; }
    .filter-form { grid-template-columns: 1fr !important; gap: 0.75rem; }

    .modal-content {
        width: 100% !important; height: 100% !important;
        max-width: 100% !important; border-radius: 0 !important; margin: 0 !important;
    }

    .modal { max-width: 100%; margin: 0.5rem; }
    .table { font-size: var(--font-size-xs); }
    .table th, .table td { padding: 0.5rem; }
    .toast-container { left: 1rem; right: 1rem; }
    .toast { min-width: auto; max-width: 100%; }

    canvas { max-width: 100%; height: auto !important; }

    .dataTables_wrapper { font-size: 0.875rem; }
    .dataTables_filter input { width: 100% !important; margin-bottom: 0.5rem; }

    .hide-mobile { display: none !important; }
    .sidebar nav a { padding: 1rem !important; font-size: 1rem; }
    label { font-size: 0.875rem; margin-bottom: 0.25rem; }

    input[type="text"], input[type="email"], input[type="password"],
    input[type="date"], input[type="time"], input[type="number"],
    select, textarea { font-size: 16px !important; padding: 0.75rem !important; }

    .badge, .tag { font-size: 0.75rem; padding: 0.25rem 0.5rem; }
    .alert { padding: 0.75rem !important; font-size: 0.875rem; }
    footer { padding: 1rem !important; font-size: 0.75rem; }

    /* Login responsive */
    .login-title { font-size: 1.5rem !important; }
    .login-card-body { padding: 1.5rem; }

    a, button, input, select { min-height: 44px; min-width: 44px; }
}

/* ========================================
   TABLET RESPONSIVE (768px - 1024px)
   ======================================== */
@media (min-width: 769px) and (max-width: 1024px) {
    .sidebar { width: 200px; }
    main { margin-left: 200px !important; padding: 1.5rem !important; }
    .lg\:grid-cols-3, .lg\:grid-cols-4 { grid-template-columns: repeat(2,1fr) !important; }
    table { font-size: 0.9375rem; }
}

/* ========================================
   LANDSCAPE PHONE
   ======================================== */
@media (max-width: 768px) and (orientation: landscape) {
    main { padding-top: 3.5rem !important; }
    .sidebar { width: 200px; }
    .mobile-menu-button { padding: 0.5rem; }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    .sidebar, .mobile-menu-button, .sidebar-overlay,
    header, footer, .no-print, button { display: none !important; }
    main { margin: 0 !important; padding: 0 !important; width: 100%; }
    .bg-white { box-shadow: none !important; }
    body { background-color: white; }
    .card { box-shadow: none; border: 1px solid var(--gray-300); }
    table { page-break-inside: avoid; }
}

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

/* ========================================
   HIGH CONTRAST
   ======================================== */
@media (prefers-contrast: high) {
    .sidebar { border-right: 2px solid #000; }
    button { border: 2px solid currentColor; }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.mobile-only { display: none; }
.desktop-only { display: block; }

@media (max-width: 768px) {
    .mobile-only { display: block; }
    .desktop-only { display: none; }
}

.text-responsive { font-size: clamp(0.875rem, 2vw, 1rem); }
.heading-responsive { font-size: clamp(1.25rem, 4vw, 2rem); }

/* Safe area for notched devices */
@supports (padding: max(0px)) {
    body {
        padding-left: max(0px, env(safe-area-inset-left));
        padding-right: max(0px, env(safe-area-inset-right));
    }
    .sidebar { padding-left: max(1rem, env(safe-area-inset-left)); }
}