/* Root Variables - Dark Anthracite Theme */
:root {
    --sidebar-width: 260px;
    --header-height: 60px;

    /* Primary Colors - Orange Theme */
    --primary-color: #f97316;
    --primary-hover: #ea580c;
    --primary-light: rgba(249, 115, 22, 0.15);

    /* Status Colors */
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #eab308;
    --info-color: #06b6d4;

    /* Dark Theme Colors */
    --bg-dark: #0f0f0f;
    --bg-darker: #0a0a0a;
    --bg-card: #1a1a1a;
    --bg-card-hover: #222222;
    --bg-input: #252525;
    --bg-sidebar: #111111;
    --bg-header: #141414;

    /* Border Colors */
    --border-color: #2a2a2a;
    --border-light: #333333;

    /* Text Colors */
    --text-primary: #f5f5f5;
    --text-secondary: #a3a3a3;
    --text-muted: #737373;

    /* Accents */
    --accent-gradient: linear-gradient(135deg, #f97316 0%, #fb923c 100%);

    /* Responsive Spacing */
    --content-padding-desktop: 24px;
    --content-padding-tablet: 20px;
    --content-padding-mobile: 16px;
    --content-padding-xs: 12px;

    /* Touch Target Minimums (Apple/Google guidelines: 44px) */
    --touch-target-min: 44px;

    /* Header Heights */
    --header-height-desktop: 60px;
    --header-height-mobile: 56px;
}

/* General */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    overflow-x: hidden;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
}

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

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

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

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

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

::-webkit-scrollbar-thumb:hover {
    background: #444;
}

/* Provider Stats Grid */
.provider-stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
}

/* Wrapper */
.wrapper {
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    overflow-x: hidden;
}

/* Body scroll lock when sidebar open on mobile */
body.sidebar-open {
    overflow: hidden;
    padding-right: var(--scrollbar-width, 0px);
}

.sidebar-header {
    height: var(--header-height);
    padding: 0 20px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin: 0;
    font-weight: 700;
    display: flex;
    align-items: center;
}

.sidebar-header i {
    margin-right: 10px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-menu {
    list-style: none;
    padding: 15px 0;
    margin: 0;
}

.sidebar-menu li {
    margin: 1px 8px;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    padding: 6px 15px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    border-radius: 8px;
}

.sidebar-menu li a:hover {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.sidebar-menu li.active a {
    background: var(--primary-light);
    color: var(--primary-color);
    font-weight: 500;
}

.sidebar-menu li a i {
    width: 22px;
    margin-right: 12px;
    font-size: 1.1rem;
}

.sidebar-menu .menu-header {
    padding: 14px 16px 6px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 1px;
}
/* Sidebar Accordion */
.sidebar-accordion-toggle {
    display: flex;
    align-items: center;
    padding: 6px 15px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    border-radius: 8px;
    cursor: pointer;
}

.sidebar-accordion-toggle:hover {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.sidebar-accordion-icon {
    font-size: 0.75rem;
    transition: transform 0.3s ease;
}

.sidebar-accordion-toggle:not(.collapsed) .sidebar-accordion-icon {
    transform: rotate(180deg);
}

.sidebar-submenu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-submenu li {
    margin: 1px 0 1px 12px;
}

.sidebar-submenu li a {
    padding: 5px 15px;
    font-size: 0.85rem;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: var(--bg-dark);
    overflow-x: hidden;
    max-width: 100%;
}

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

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.sidebar-toggle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.2s;
}

.sidebar-toggle:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.breadcrumb {
    font-size: 0.85rem;
    margin: 0;
    padding: 0;
    background: transparent;
}

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

.breadcrumb-item a {
    color: var(--text-secondary);
}

.breadcrumb-item.active {
    color: var(--text-primary);
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--text-muted);
}

/* Mobile Page Title */
.mobile-page-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

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

.user-dropdown {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 8px 12px;
    border-radius: 8px;
    transition: all 0.2s;
}

.user-dropdown:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.user-dropdown i {
    font-size: 1.25rem;
}

/* Content Area */
.content-area {
    flex: 1;
    padding: 24px;
    overflow-x: hidden;
}

/* Footer */
.main-footer {
    background: var(--bg-header);
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

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

/* Auth Page */
.auth-page {
    background: var(--bg-darker);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.auth-card {
    background: var(--bg-card);
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.auth-card-header {
    background: var(--accent-gradient);
    padding: 40px 30px;
    text-align: center;
}

.auth-card-header h1 {
    font-size: 1.75rem;
    margin: 0;
    color: #fff;
    font-weight: 700;
}

.auth-card-header p {
    margin: 12px 0 0;
    opacity: 0.9;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
}

.auth-card-body {
    padding: 32px;
}

/* Form Controls */
.form-control,
.form-select {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: all 0.2s;
}

.form-control:focus,
.form-select:focus {
    background-color: var(--bg-input);
    border-color: var(--primary-color);
    color: var(--text-primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

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

.form-label {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.form-check-input {
    background-color: var(--bg-input);
    border-color: var(--border-light);
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-label {
    color: var(--text-secondary);
}

/* Disabled inputs */
.form-control:disabled,
.form-control[readonly],
.form-select:disabled {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color);
    color: var(--text-secondary);
    opacity: 0.8;
}

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

/* Buttons */
.btn {
    padding: 10px 20px;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.btn-primary {
    background: var(--accent-gradient);
    border: none;
    color: #fff;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4);
}

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

.btn-success:hover {
    background-color: #059669;
    border-color: #059669;
}

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

.btn-danger:hover {
    background-color: #dc2626;
    border-color: #dc2626;
}

.btn-warning {
    background-color: var(--warning-color);
    border-color: var(--warning-color);
    color: #000;
}

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

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: #fff;
}

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

.btn-outline-secondary:hover {
    background: var(--bg-card);
    border-color: var(--border-light);
    color: var(--text-primary);
}

.btn-outline-danger {
    border-color: var(--danger-color);
    color: var(--danger-color);
}

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

/* Touch-Friendly Button Sizing */
.btn {
    min-height: var(--touch-target-min);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-sm {
    min-height: 36px;
    padding: 6px 12px;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    gap: 12px;
    flex-wrap: wrap;
}

.page-header h4 {
    margin: 0;
}

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

/* Search Input Wrapper */
.search-input-wrapper {
    flex: 1;
    min-width: 150px;
    max-width: 300px;
}

.search-input-wrapper .form-control {
    width: 100%;
    max-width: none;
}

/* Stat Cards */
.stat-card {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 24px;
    margin-bottom: 24px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.stat-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
}

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

.stat-card-body {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-card-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.stat-card-content p {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
    margin: 8px 0 0;
    letter-spacing: 0.5px;
}

.stat-card-icon {
    font-size: 2.5rem;
    opacity: 0.3;
}

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

/* Data Card */
.data-card {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
    overflow: hidden;
}

.data-card-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    background: var(--bg-card-hover);
}

.data-card-header h5 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.data-card-header h5 i {
    color: var(--primary-color);
}

.data-card-body {
    padding: 24px;
}

/* Tables */
.table-responsive {
    margin: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    color: var(--text-primary);
    margin: 0;
}

.data-table {
    font-size: 0.9rem;
}

.data-table th {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    white-space: nowrap;
    padding: 14px 16px;
}

.data-table td {
    vertical-align: middle;
    border-color: var(--border-color);
    padding: 14px 16px;
    color: var(--text-primary);
}

.data-table tbody tr {
    transition: background-color 0.2s;
}

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

.data-table .actions {
    white-space: nowrap;
}

.data-table .actions .btn {
    padding: 6px 10px;
    font-size: 0.8rem;
}

.table-borderless td,
.table-borderless th {
    border: none;
    padding: 12px 0;
}

/* Badges */
.badge {
    padding: 6px 12px;
    font-weight: 500;
    font-size: 0.75rem;
    border-radius: 6px;
}

.badge-verified,
.bg-success { background-color: var(--success-color) !important; }
.badge-unverified { background-color: var(--text-muted) !important; }
.badge-active { background-color: var(--success-color) !important; }
.badge-inactive { background-color: var(--danger-color) !important; }
.badge-premium { background-color: var(--warning-color) !important; color: #000 !important; }
.bg-primary { background-color: var(--primary-color) !important; }
.bg-danger { background-color: var(--danger-color) !important; }
.bg-warning { background-color: var(--warning-color) !important; color: #000 !important; }
.bg-info { background-color: var(--info-color) !important; }
.bg-secondary { background-color: var(--text-muted) !important; }

/* Form Card */
.form-card {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    max-width: 700px;
}

.form-card-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-card-hover);
}

.form-card-header h5 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-card-header h5 i {
    color: var(--primary-color);
}

.form-card-body {
    padding: 24px;
}

/* Search Form */
.search-form {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 24px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

/* Kart icindeki search-form - gereksiz margin/padding/border kaldir */
.data-card-body .search-form {
    margin-bottom: 0;
    padding: 0;
    background: transparent;
    border-radius: 0;
    border: none;
}

.search-form .form-control {
    max-width: 200px;
    background-color: var(--bg-input);
}

.search-form .form-select {
    width: auto;
    min-width: 0;
    background-color: var(--bg-input);
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-light);
    border-radius: 12px;
    padding: 48px;
    text-align: center;
    background-color: var(--bg-input);
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: var(--primary-light);
}

.upload-area i {
    font-size: 3.5rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.upload-area p {
    color: var(--text-secondary);
    margin: 0;
}

/* Preview Table */
.preview-table {
    max-height: 400px;
    overflow-y: auto;
}

/* Alerts */
.alert {
    border: none;
    border-radius: 8px;
    padding: 16px 20px;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--warning-color);
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background-color: rgba(6, 182, 212, 0.15);
    color: var(--info-color);
    border-left: 4px solid var(--info-color);
}

/* Pagination */
.pagination {
    gap: 4px;
}

.page-link {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-secondary);
    padding: 8px 14px;
    border-radius: 6px;
}

.page-link:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--border-light);
    color: var(--text-primary);
}

.page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.page-item.disabled .page-link {
    background-color: var(--bg-input);
    border-color: var(--border-color);
    color: var(--text-muted);
}

/* Dropdown */
.dropdown-menu {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    padding: 8px;
}

.dropdown-item {
    color: var(--text-secondary);
    padding: 10px 16px;
    border-radius: 6px;
}

.dropdown-item:hover {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
}

.dropdown-divider {
    border-color: var(--border-color);
}

/* Modal */
.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.modal-header {
    border-color: var(--border-color);
    padding: 20px 24px;
}

.modal-title {
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    border-color: var(--border-color);
    padding: 16px 24px;
}

.btn-close {
    filter: invert(1);
}

/* Text Colors */
.text-muted {
    color: var(--text-muted) !important;
}

.text-primary {
    color: var(--primary-color) !important;
}

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

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

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

/* Background Helpers */
.bg-light {
    background-color: var(--bg-card-hover) !important;
}

/* Delete Button Confirmation */
.btn-delete {
    position: relative;
}

/* Page Title */
h4 {
    color: var(--text-primary);
    font-weight: 600;
}

/* Sidebar Collapsed State (Desktop) */
.sidebar.collapsed {
    width: 70px;
}

.sidebar.collapsed .sidebar-header h3 span,
.sidebar.collapsed .sidebar-menu li a span,
.sidebar.collapsed .sidebar-menu .menu-header {
    display: none;
}

.sidebar.collapsed .sidebar-header {
    padding: 0 15px;
    text-align: center;
    justify-content: center;
}

.sidebar.collapsed .sidebar-header h3 {
    justify-content: center;
}

.sidebar.collapsed .sidebar-header h3 i {
    margin-right: 0;
    font-size: 1.5rem;
}

.sidebar.collapsed .sidebar-menu li a {
    justify-content: center;
    padding: 12px;
}

.sidebar.collapsed .sidebar-menu li a i {
    margin-right: 0;
    font-size: 1.2rem;
}

.main-content.expanded {
    margin-left: 70px;
}

/* Sidebar Overlay (Mobile) */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 999;
    backdrop-filter: blur(2px);
}

.sidebar-overlay.active {
    display: block;
}

/* ========================================
   RESPONSIVE BREAKPOINTS
   - xs: < 576px (Mobile portrait)
   - sm: >= 576px (Mobile landscape)
   - md: >= 768px (Tablet)
   - lg: >= 992px (Desktop)
   - xl: >= 1200px (Large desktop)
   ======================================== */

/* Large Desktop (xl) - 1200px and up */
@media (min-width: 1200px) {
    .container-xl-wide {
        max-width: 1400px;
    }
}

/* Desktop to Tablet (lg) - 992px to 1199px */
@media (max-width: 1199px) {
    .stat-card-content h3 {
        font-size: 1.75rem;
    }
}

/* Tablet (md) - 768px to 991px */
@media (max-width: 991px) {
    /* Sidebar mobile behavior */
    .sidebar {
        transform: translateX(-100%);
        -webkit-overflow-scrolling: touch;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .sidebar.active {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.4);
    }

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

    /* Header adjustments */
    .main-header {
        padding: 0 var(--content-padding-tablet);
    }

    /* Content area */
    .content-area {
        padding: var(--content-padding-tablet);
    }

    /* Form cards full width */
    .form-card {
        max-width: 100%;
    }

    /* Upload area */
    .upload-area {
        padding: 32px 20px;
    }

    /* Stat cards */
    .stat-card-icon {
        font-size: 2rem;
    }

    /* Sidebar overlay transition */
    .sidebar-overlay {
        transition: opacity 0.3s ease;
    }

    /* Chevron rotation animation */
    .sidebar-dropdown > a .sidebar-chevron {
        transition: transform 0.3s ease;
    }
    .sidebar-dropdown > a:not(.collapsed) .sidebar-chevron {
        transform: rotate(180deg);
    }

    /* Active page highlight */
    .sidebar-menu li.active > a {
        background: rgba(245, 158, 11, 0.15);
        border-left: 3px solid var(--accent, #f59e0b);
        color: var(--accent, #f59e0b);
        font-weight: 600;
    }
    .sidebar-submenu li.active > a {
        color: var(--accent, #f59e0b);
        font-weight: 600;
        background: rgba(245, 158, 11, 0.1);
    }

    /* Menu item touch feedback */
    .sidebar-menu a:active {
        transform: scale(0.98);
        background: rgba(255, 255, 255, 0.05);
    }

    /* Submenu animation */
    .sidebar-submenu {
        transition: max-height 0.35s ease;
    }
}

/* Small Tablet / Large Mobile (sm) - 576px to 767px */
@media (max-width: 767px) {
    /* Header compact mode */
    .main-header {
        height: var(--header-height-mobile);
        padding: 0 var(--content-padding-mobile);
    }

    /* Header left - reduce gap */
    .header-left {
        gap: 10px;
    }

    /* Breadcrumb truncation */
    .breadcrumb {
        max-width: 150px;
        overflow: hidden;
    }

    .breadcrumb-item {
        max-width: 100px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .breadcrumb-item + .breadcrumb-item::before {
        padding: 0 4px;
    }

    /* Hide username on header dropdown */
    .user-dropdown span {
        display: none;
    }

    .user-dropdown {
        padding: 10px;
    }

    /* Content area */
    .content-area {
        padding: var(--content-padding-mobile);
    }

    /* Page header responsive */
    .page-header {
        flex-direction: column;
        align-items: stretch;
    }

    .page-header h4 {
        margin-bottom: 12px;
        font-size: 1.25rem;
    }

    .page-header-actions {
        flex-direction: column;
        gap: 8px;
    }

    .page-header-actions .btn-group {
        width: 100%;
        display: flex;
    }

    .page-header-actions .btn-group .btn {
        flex: 1;
    }

    .page-header-actions > .btn:not(.btn-group .btn) {
        width: 100%;
    }

    /* Search forms */
    .search-form {
        padding: 16px;
        gap: 10px;
    }

    .search-form .form-control,
    .search-form .form-select {
        max-width: 100% !important;
        min-width: 0;
        flex: 1 1 calc(50% - 5px);
    }

    .search-input-wrapper {
        flex: 1 1 100%;
        max-width: 100%;
    }

    /* Stat cards */
    .stat-card {
        padding: 16px;
        margin-bottom: 16px;
    }

    .stat-card-content h3 {
        font-size: 1.5rem;
    }

    .stat-card-content p {
        font-size: 0.75rem;
    }

    .stat-card-icon {
        font-size: 1.75rem;
    }

    /* Data cards */
    .data-card-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 14px 16px;
    }

    .data-card-body {
        padding: 16px;
    }

    /* Upload area */
    .upload-area {
        padding: 24px 16px;
    }

    .upload-area i {
        font-size: 2.5rem;
    }

    /* Pagination */
    .pagination-wrapper {
        flex-direction: column;
        gap: 12px;
    }

    .pagination {
        flex-wrap: wrap;
        justify-content: center;
    }

    .page-link {
        padding: 10px 14px;
        min-width: var(--touch-target-min);
        min-height: var(--touch-target-min);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Touch-friendly buttons */
    .btn-sm {
        min-height: var(--touch-target-min);
        padding: 10px 14px;
    }

    /* Sidebar menu touch targets */
    .sidebar-menu li a {
        min-height: var(--touch-target-min);
        padding: 12px 16px;
    }

    /* Table horizontal scroll enhancement */
    .table-responsive {
        margin: 0 -16px;
        padding: 0 16px;
        -webkit-overflow-scrolling: touch;
    }

    /* Sticky action column on mobile */
    .data-table .col-actions {
        position: sticky;
        right: 0;
        background: var(--bg-card);
        box-shadow: -4px 0 8px rgba(0, 0, 0, 0.2);
    }

    .data-table th.col-actions,
    .data-table td.col-actions {
        position: sticky;
        right: 0;
        background: var(--bg-card);
    }

    .data-table th.col-actions {
        background: var(--bg-card-hover);
    }
    /* === Task 2: Table Responsive === */
    .table {
        font-size: 13px;
    }

    .table th,
    .table td {
        padding: 8px 10px;
        white-space: nowrap;
    }

    .table th:first-child,
    .table td:first-child {
        position: sticky;
        left: 0;
        z-index: 2;
        background: var(--bg-card, #1a1d23);
    }

    .table .btn-group {
        flex-wrap: nowrap;
        gap: 4px;
    }

    .table .btn-sm {
        padding: 4px 8px;
        font-size: 12px;
    }

    /* === Task 2: Form Responsive === */
    .form-control,
    .form-select {
        font-size: 16px !important;
        min-height: 44px;
    }

    .form-group,
    .mb-3 {
        margin-bottom: 16px;
    }

    .form-label {
        font-size: 13px;
        margin-bottom: 4px;
    }

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

    .input-group .form-control {
        min-width: 0;
    }

    /* === Task 2: Search Form Mobile === */
    .search-form .form-control {
        font-size: 16px;
        height: 44px;
    }

    .search-form .btn {
        height: 44px;
        min-width: 44px;
    }

    .search-form-collapsible .search-form-body {
        padding: 12px;
    }

    .search-form-collapsible .search-form-body .row > div {
        margin-bottom: 8px;
    }

    /* === Task 2: Card Layout Mobile === */
    .card {
        margin-bottom: 16px;
    }

    .card-body {
        padding: 16px;
    }

    .card-header {
        padding: 12px 16px;
    }

    .stat-cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    /* === Task 3: Checker Upload Area === */
    .checker-upload-area {
        padding: 24px 16px;
    }

    .checker-upload-area .btn {
        width: 100%;
        min-height: 44px;
    }

    /* === Task 3: Checker Queue Items === */
    .checker-queue-item {
        padding: 8px 12px;
        font-size: 13px;
    }

    /* === Task 3: Checker Stats === */
    .checker-stats {
        flex-direction: column;
        gap: 8px;
    }

    .checker-stats .stat-item {
        width: 100%;
    }

    /* Provider stats grid responsive */
    .provider-stats-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    /* Search form overflow fix */
    .search-form > * {
        min-width: 0;
    }
}

/* Mobile Portrait (xs) - Below 576px */
@media (max-width: 575px) {
    /* Content area extra compact */
    .content-area {
        padding: var(--content-padding-xs);
    }

    /* Page titles */
    h4 {
        font-size: 1.1rem;
    }

    /* Export buttons - icon only */
    .page-header-actions .btn-group .btn span {
        display: none;
    }

    /* Button groups - 2 per row */
    .page-header-actions .btn-group {
        flex-wrap: wrap;
    }

    .page-header-actions .btn-group .btn {
        flex: 1 1 calc(50% - 2px);
    }

    /* Search forms - full width stacking */
    .search-form {
        flex-direction: column;
        padding: 12px;
    }

    .search-form .form-control,
    .search-form .form-select {
        flex: 1 1 100%;
    }

    .search-form .btn {
        width: 100%;
    }

    /* Stat cards - vertical layout */
    .stat-card {
        padding: 14px;
    }

    .stat-card-body {
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }

    .stat-card-icon {
        order: -1;
        font-size: 2rem;
    }

    /* Data card headers extra compact */
    .data-card-header {
        padding: 12px;
    }

    .data-card-header h5 {
        font-size: 0.9rem;
    }

    .data-card-body {
        padding: 12px;
    }

    .data-table th,
    .data-table td {
        padding: 10px 12px;
        font-size: 0.85rem;
    }

    /* Action buttons - touch friendly */
    .data-table .actions {
        display: flex;
        gap: 4px;
    }

    .data-table .actions .btn {
        padding: 8px 10px;
        min-width: 38px;
        min-height: 38px;
    }

    /* Pagination simplified */
    .pagination .page-link {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    /* Form card */
    .form-card-header {
        padding: 14px 16px;
    }

    .form-card-body {
        padding: 16px;
    }

    /* Modal adjustments */
    .modal-dialog {
        margin: 8px;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 16px;
    }

    /* Alert compact */
    .alert {
        padding: 12px 16px;
        font-size: 0.9rem;
    }

    /* Auth page mobile */
    .auth-container {
        padding: 12px;
    }

    .auth-card-header {
        padding: 30px 20px;
    }

    .auth-card-header h1 {
        font-size: 1.5rem;
    }

    .auth-card-body {
        padding: 24px 20px;
    }

    /* Footer compact */
    .main-footer {
        padding: 12px 16px;
    }

    .footer-content {
        font-size: 0.8rem;
    }

    /* Sidebar toggle larger touch target */
    .sidebar-toggle {
        padding: 12px;
        margin: -4px;
    }
    /* === Task 2: Table Responsive === */
    .table th,
    .table td {
        padding: 6px 8px;
        font-size: 12px;
    }

    .table [data-hide-mobile] {
        display: none;
    }

    /* === Task 2: Form Responsive === */
    .row > .col-md-6,
    .row > .col-md-4,
    .row > .col-md-3 {
        flex: 0 0 100%;
        max-width: 100%;
    }

    .form-actions,
    .d-flex.gap-2 {
        flex-direction: column;
    }

    .form-actions .btn,
    .d-flex.gap-2 .btn {
        width: 100%;
    }

    /* === Task 2: Button Group Mobile === */
    .btn-group-mobile {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .btn-group-mobile .btn {
        flex: 1 1 calc(50% - 4px);
        min-width: 0;
        text-align: center;
    }

    .page-header .btn-group,
    .page-header .d-flex {
        flex-wrap: wrap;
        gap: 8px;
    }

    .page-header .btn {
        font-size: 13px;
        padding: 8px 12px;
    }

    /* === Task 2: Card Layout Mobile === */
    .stat-cards-grid {
        grid-template-columns: 1fr;
    }

    .card-body {
        padding: 12px;
    }

    /* === Task 3: Checker Upload Area XS === */
    .checker-upload-area {
        padding: 16px 12px;
    }

    /* === Task 3: Dashboard Quick Actions === */
    .dashboard-quick-actions {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .dashboard-quick-actions .btn {
        font-size: 12px;
        padding: 8px;
    }

    /* Provider stats grid - single column */
    .provider-stats-grid {
        grid-template-columns: 1fr !important;
    }

    .data-table th,
    .data-table td {
        min-width: 0;
    }

    .data-card .d-flex .rounded-circle.me-3 {
        margin-right: 8px !important;
    }
}

/* Table minimum column widths */
.data-table th,
.data-table td {
    min-width: 60px;
}

.data-table .col-id {
    min-width: 50px;
    width: 50px;
}

.data-table .col-actions {
    min-width: 80px;
}

/* Collapsible Search Form */
.search-form-collapsible {
    width: 100%;
}

@media (min-width: 992px) {
    .search-form-collapsible > button.d-lg-none {
        display: none !important;
    }

    .search-form-collapsible .search-form {
        display: flex !important;
    }
}

/* Safe Area Support (notch devices) */
@supports (padding: max(0px)) {
    .main-header {
        padding-left: max(var(--content-padding-mobile), env(safe-area-inset-left));
        padding-right: max(var(--content-padding-mobile), env(safe-area-inset-right));
    }

    .content-area {
        padding-left: max(var(--content-padding-mobile), env(safe-area-inset-left));
        padding-right: max(var(--content-padding-mobile), env(safe-area-inset-right));
    }

    .main-footer {
        padding-bottom: max(16px, env(safe-area-inset-bottom));
    }
}

/* Print Optimization */
@media print {
    .sidebar,
    .sidebar-overlay,
    .sidebar-toggle,
    .main-header,
    .btn,
    .pagination,
    .search-form,
    .page-header-actions {
        display: none !important;
    }

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

    .content-area {
        padding: 0 !important;
    }

    .data-card {
        border: 1px solid #ddd !important;
        break-inside: avoid;
    }

    .table {
        font-size: 10pt !important;
    }

    body {
        background: #fff !important;
        color: #000 !important;
    }
}

/* Selection */
::selection {
    background-color: var(--primary-color);
    color: #fff;
}

/* Focus Visible */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Smooth Transitions */
.sidebar-menu li a,
.btn,
.form-control,
.form-select,
.data-card,
.stat-card {
    transition: all 0.2s ease;
}

/* Bootstrap Dark Overrides */
.table {
    --bs-table-bg: transparent;
    --bs-table-striped-bg: var(--bg-card-hover);
    --bs-table-hover-bg: var(--bg-card-hover);
    --bs-table-border-color: var(--border-color);
    background-color: transparent;
}

.table > :not(caption) > * > * {
    background-color: transparent;
    border-bottom-color: var(--border-color);
    color: var(--text-primary);
}

.table > thead {
    background-color: var(--bg-card-hover);
}

.table > tbody > tr:hover {
    background-color: var(--bg-card-hover);
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
    background-color: rgba(255, 255, 255, 0.02);
}

.card {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.card-header {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.card-footer {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color);
}

.list-group-item {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.list-group-item:hover {
    background-color: var(--bg-card-hover);
}

.nav-tabs {
    border-color: var(--border-color);
}

.nav-tabs .nav-link {
    color: var(--text-secondary);
}

.nav-tabs .nav-link:hover {
    border-color: var(--border-color);
    color: var(--text-primary);
}

.nav-tabs .nav-link.active {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--primary-color);
}

.input-group-text {
    background-color: var(--bg-input);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.progress {
    background-color: var(--bg-input);
}

.progress-bar {
    background-color: var(--primary-color);
}

hr {
    border-color: var(--border-color);
    opacity: 1;
}

code {
    color: var(--primary-color);
    background-color: var(--bg-input);
    padding: 2px 6px;
    border-radius: 4px;
}

pre {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    color: var(--text-primary);
}

blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 16px;
    color: var(--text-secondary);
}

/* Tooltip Dark */
.tooltip .tooltip-inner {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

/* Popover Dark */
.popover {
    background-color: var(--bg-card);
    border-color: var(--border-color);
}

.popover-header {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color);
    color: var(--text-primary);
}

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

/* Accordion Dark */
.accordion-item {
    background-color: var(--bg-card);
    border-color: var(--border-color);
}

.accordion-button {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.accordion-button:not(.collapsed) {
    background-color: var(--bg-card-hover);
    color: var(--primary-color);
}

.accordion-button::after {
    filter: invert(1);
}

/* Toast Dark */
.toast {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.toast-header {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Offcanvas Dark */
.offcanvas {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.offcanvas-header {
    border-color: var(--border-color);
}

/* Additional overrides */
.border {
    border-color: var(--border-color) !important;
}

.border-top,
.border-bottom,
.border-start,
.border-end {
    border-color: var(--border-color) !important;
}

.shadow-sm {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3) !important;
}

.shadow {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4) !important;
}

.shadow-lg {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5) !important;
}

/* ============================================
   Provider Stats Grid
   ============================================ */
.provider-stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
}

@media (max-width: 1200px) {
    .provider-stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 576px) {
    .provider-stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.provider-stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.6rem 0.25rem;
    background: rgba(255,255,255,0.03);
    border-radius: 6px;
    transition: all 0.2s;
    border: 1px solid var(--border-color);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.provider-stat-item:hover {
    background: rgba(255,255,255,0.08);
    transform: translateY(-2px);
    text-decoration: none;
    color: inherit;
}

.provider-stat-item.active {
    background: rgba(249, 115, 22, 0.15);
    border-color: rgba(249, 115, 22, 0.4);
}

.provider-stat-item i {
    font-size: 1.1rem;
    margin-bottom: 0.2rem;
}

.provider-stat-item .count {
    font-size: 0.95rem;
    font-weight: 700;
}

.provider-stat-item .label {
    font-size: 0.6rem;
    text-transform: uppercase;
    color: var(--text-secondary);
}

/* Provider Colors */
.provider-stat-item.all i, .provider-stat-item.all .count { color: var(--primary-color); }
.provider-stat-item.gmail i, .provider-stat-item.gmail .count { color: #EA4335; }
.provider-stat-item.hotmail i, .provider-stat-item.hotmail .count { color: #0078D4; }
.provider-stat-item.outlook i, .provider-stat-item.outlook .count { color: #0072C6; }
.provider-stat-item.icloud i, .provider-stat-item.icloud .count { color: #999; }
.provider-stat-item.yahoo i, .provider-stat-item.yahoo .count { color: #6001D2; }
.provider-stat-item.yandex i, .provider-stat-item.yandex .count { color: #FF0000; }
.provider-stat-item.mynet i, .provider-stat-item.mynet .count { color: #00A651; }
.provider-stat-item.other i, .provider-stat-item.other .count { color: #6c757d; }

/* Spin animation */
.spin {
    display: inline-block;
    animation: spin 1s linear infinite;
}

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

/* ======================== */
/* OPERATOR BADGES          */
/* ======================== */
.operator-badge { padding: 4px 10px; border-radius: 6px; font-size: 0.75rem; font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
.operator-turkcell { background: rgba(255,193,7,0.15); color: #ffc107; }
.operator-vodafone { background: rgba(220,53,69,0.15); color: #dc3545; }
.operator-turktelekom { background: rgba(13,110,253,0.15); color: #0d6efd; }
.operator-diger { background: rgba(108,117,125,0.15); color: #6c757d; }

/* SORTABLE HEADERS */
.sortable-header { cursor: pointer; user-select: none; white-space: nowrap; }
.sortable-header:hover { color: #0d6efd; }
.sortable-header .sort-icon { margin-left: 4px; font-size: 0.7rem; }

/* PHONE DETAIL CARDS */
.phone-detail-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 8px; padding: 20px; margin-bottom: 16px; }
.phone-detail-card h6 { font-weight: 600; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.detail-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border-color); }
.detail-row:last-child { border-bottom: none; }
.detail-label { color: var(--text-muted); font-size: 0.875rem; }
.detail-value { font-weight: 500; }

/* ======================== */
/* EMAIL PAGE IMPROVEMENTS  */
/* ======================== */
.number-formatted { font-variant-numeric: tabular-nums; }

/* ======================== */
/* UPLOAD TRANSFER STATUS   */
/* ======================== */
.transfer-status-card { background: var(--bg-card); border: 1px solid var(--primary-color); border-radius: 8px; padding: 16px 20px; margin-bottom: 16px; color: var(--text-primary); }
.transfer-status-card.success { background: rgba(16, 185, 129, 0.1); border-color: var(--success-color); }
.transfer-status-card.error { background: rgba(239, 68, 68, 0.1); border-color: var(--danger-color); }
.transfer-progress { height: 8px; background: var(--bg-input); border-radius: 4px; overflow: hidden; margin: 8px 0; }
.transfer-progress-bar { height: 100%; background: var(--accent-gradient); border-radius: 4px; transition: width 0.5s; }
.transfer-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 8px; margin-top: 12px; }
.transfer-stat { text-align: center; padding: 8px; background: rgba(255,255,255,0.05); border-radius: 6px; }
.transfer-stat-value { font-size: 1.25rem; font-weight: 700; color: var(--text-primary); }
.transfer-stat-label { font-size: 0.75rem; color: var(--text-secondary); }
.upload-disabled-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); border-radius: inherit; display: flex; align-items: center; justify-content: center; z-index: 10; }
.upload-disabled-text { color: #fff; font-weight: 600; font-size: 1.1rem; text-align: center; }
.operator-unique-badge { font-size: 0.75rem; color: #198754; margin-left: 4px; }

/* =============================================
   Mobile Task 4+5 - Upload Page + Final Polish
   ============================================= */

/* 1. Upload Page Mobile (767px) */
@media (max-width: 767px) {
    /* Upload zone - vertical stack */
    .upload-area-compact #uploadZoneContent {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }

    .upload-area-compact #uploadZoneContent i {
        font-size: 2.5rem;
    }

    /* Transfer stats compact */
    .transfer-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .transfer-stat-value {
        font-size: 1rem;
    }

    /* Upload results table */
    .upload-results-table {
        font-size: 13px;
    }

    /* File list items compact */
    .file-list-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .file-list-item .file-actions {
        width: 100%;
        display: flex;
        gap: 8px;
    }

    .file-list-item .file-actions .btn {
        flex: 1;
    }
}

/* 2. Upload Page XS (575px) */
@media (max-width: 575px) {
    .transfer-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .transfer-stat {
        padding: 6px;
    }

    .transfer-stat-value {
        font-size: 0.9rem;
    }

    .transfer-stat-label {
        font-size: 0.65rem;
    }
}

/* 3. Phone Detail Cards Mobile (767px) */
@media (max-width: 767px) {
    .phone-detail-card {
        padding: 14px;
    }

    .detail-row {
        flex-direction: column;
        gap: 2px;
        padding: 6px 0;
    }

    .detail-label {
        font-size: 0.8rem;
    }

    .detail-value {
        font-size: 0.9rem;
    }
}

/* 4. Operator Badges Mobile (575px) */
@media (max-width: 575px) {
    .operator-badge {
        font-size: 0.65rem;
        padding: 3px 6px;
    }
}

/* 5. Smooth scroll behavior */
@media (max-width: 767px) {
    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }

    /* Prevent horizontal scroll */
    body {
        overflow-x: hidden;
    }
}