/* ============================================
   LeraBot Admin — Modern Light Tech Theme
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ---------- Variables ---------- */
:root {
    --sidebar-width: 260px;
    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --primary-light: #EFF6FF;
    --primary-dark: #1D4ED8;
    --success: #10B981;
    --success-light: #ECFDF5;
    --warning: #F59E0B;
    --warning-light: #FFFBEB;
    --danger: #EF4444;
    --danger-light: #FEF2F2;
    --info: #06B6D4;
    --info-light: #ECFEFF;
    --bg: #F8FAFC;
    --bg-card: #FFFFFF;
    --text: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --border: #E2E8F0;
    --border-light: #F1F5F9;
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.03);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    --transition: 200ms ease;

    /* Compatibility aliases */
    --primary-color: var(--primary);
    --primary-gradient: var(--primary);
    --success-color: var(--success);
    --success-gradient: var(--success);
    --warning-color: var(--warning);
    --warning-gradient: var(--warning);
    --info-color: var(--info);
    --info-gradient: var(--info);
    --danger-color: var(--danger);
    --danger-gradient: var(--danger);
    --body-bg: var(--bg);
    --text-main: var(--text);
    --card-shadow: var(--shadow-sm);
    --card-hover-shadow: var(--shadow-md);
    --sidebar-text: var(--text-secondary);
    --sidebar-text-hover: var(--primary);
}

/* ---------- Global ---------- */
*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ---------- HTMX Transitions ---------- */
.htmx-swapping { opacity: 0; transition: opacity 150ms ease-out; }
.htmx-settling { opacity: 1; transition: opacity 150ms ease-in; }

/* ---------- Progress Bar ---------- */
#htmx-progress {
    position: fixed; top: 0; left: 0; width: 0; height: 3px;
    background: linear-gradient(90deg, var(--primary), #818CF8);
    z-index: 9999; transition: width 0.4s ease; border-radius: 0 2px 2px 0;
}
#htmx-progress.htmx-request { width: 90%; transition: width 8s cubic-bezier(0.1,0.05,0,1); }
#htmx-progress.htmx-request.done { width: 100%; opacity: 0; transition: width 0.1s ease, opacity 0.3s ease 0.1s; }

/* ---------- Sidebar ---------- */
.sidebar {
    width: var(--sidebar-width) !important; height: 100vh;
    position: fixed !important; top: 0; left: 0;
    background: var(--bg-card) !important; padding: 0 !important;
    overflow-y: auto; z-index: 1040;
    transition: transform 250ms ease;
    border-right: 1px solid var(--border);
}
.sidebar-brand { padding: 24px 20px; border-bottom: 1px solid var(--border); }
.sidebar-brand a {
    font-size: 1.15rem; font-weight: 700; color: var(--text) !important;
    display: flex; align-items: center; gap: 12px;
}
.sidebar-brand .brand-icon {
    width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary), #818CF8);
    border-radius: 10px; display: flex; align-items: center; justify-content: center;
    font-size: 1rem; color: #fff; flex-shrink: 0;
}
.sidebar-nav { padding: 16px 12px; list-style: none; margin: 0; }
.sidebar-nav .nav-link {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 14px; color: var(--text-secondary) !important;
    border-radius: var(--radius-sm); font-size: 0.9rem; font-weight: 500;
    transition: all var(--transition); margin-bottom: 4px; cursor: pointer;
}
.sidebar-nav .nav-link:hover { color: var(--primary) !important; background: var(--primary-light); }
.sidebar-nav .nav-link.active {
    color: var(--primary) !important; background: var(--primary-light);
    font-weight: 600;
}
.sidebar-nav .nav-link i { width: 20px; text-align: center; font-size: 1rem; flex-shrink: 0; }
.sidebar-footer { padding: 16px 12px; border-top: 1px solid var(--border); margin-top: auto; }
.sidebar-footer a {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 14px; color: var(--text-muted) !important;
    border-radius: var(--radius-sm); font-size: 0.875rem; transition: all var(--transition);
}
.sidebar-footer a:hover { color: var(--danger) !important; background: var(--danger-light); }

/* ---------- Content ---------- */
.content {
    margin-left: var(--sidebar-width) !important;
    padding: 32px 32px !important; min-height: 100vh;
    transition: margin-left 250ms ease;
}

/* ---------- Mobile ---------- */
.sidebar-toggle {
    display: none; position: fixed; top: 16px; left: 16px; z-index: 1050;
    width: 40px; height: 40px; border-radius: var(--radius-sm); border: 1px solid var(--border);
    background: #fff; color: var(--text); font-size: 1rem; cursor: pointer;
    box-shadow: var(--shadow-sm);
    align-items: center; justify-content: center;
}
.sidebar-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.3); z-index: 1035; backdrop-filter: blur(2px);
}
@media (max-width: 991px) {
    .sidebar-toggle { display: flex; }
    .sidebar { transform: translateX(-100%); }
    .sidebar.show { transform: translateX(0); box-shadow: var(--shadow-lg); }
    .sidebar-overlay.show { display: block; }
    .content { margin-left: 0 !important; padding: 24px 16px !important; padding-top: 72px !important; }
}

/* ---------- Cards ---------- */
.card {
    border: 1px solid var(--border); background: var(--bg-card);
    border-radius: var(--radius) !important; box-shadow: var(--shadow-xs);
    transition: box-shadow var(--transition); overflow: hidden;
}
.card:hover { box-shadow: var(--shadow-sm); }
.card-header {
    background: var(--bg-card); border-bottom: 1px solid var(--border);
    font-weight: 600; padding: 16px 20px;
    display: flex; align-items: center; gap: 8px; font-size: 0.9rem;
}
.card-header h6 { margin: 0; font-size: 0.9rem; font-weight: 600; }
.card-body { padding: 20px; }

/* ---------- Stat Cards ---------- */
.stat-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 20px 24px;
    display: flex; align-items: center; gap: 16px;
    box-shadow: var(--shadow-xs); transition: all var(--transition);
}
.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.stat-icon {
    width: 48px; height: 48px; min-width: 48px;
    border-radius: var(--radius-sm); display: flex;
    align-items: center; justify-content: center; font-size: 1.2rem; flex-shrink: 0;
}
.stat-icon-primary { background: var(--primary-light); color: var(--primary); }
.stat-icon-success { background: var(--success-light); color: var(--success); }
.stat-icon-info { background: var(--info-light); color: var(--info); }
.stat-icon-warning { background: var(--warning-light); color: var(--warning); }
.stat-value { font-size: 1.75rem; font-weight: 700; line-height: 1.2; color: var(--text); }
.stat-label { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; margin-bottom: 2px; }

/* Old gradient classes reset */
.bg-gradient-primary, .bg-gradient-success,
.bg-gradient-warning, .bg-gradient-info { background: transparent !important; }

/* ---------- Page Header ---------- */
.page-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 24px; gap: 16px; flex-wrap: wrap;
}
.page-header h2 {
    font-weight: 700; font-size: 1.5rem; color: var(--text); margin: 0;
    display: flex; align-items: center; gap: 10px;
}
.page-header h2 i { color: var(--primary); font-size: 1.25rem; }

/* ---------- Tables ---------- */
.table { border-collapse: separate; border-spacing: 0; }
.table thead th {
    background: var(--border-light); border-bottom: 1px solid var(--border);
    font-weight: 600; font-size: 0.75rem; text-transform: uppercase;
    letter-spacing: 0.5px; color: var(--text-muted); padding: 12px 16px;
}
.table tbody td {
    padding: 14px 16px; vertical-align: middle;
    border-bottom: 1px solid var(--border-light); color: var(--text);
}
.table-hover tbody tr:hover { background-color: var(--primary-light); }

/* ---------- Buttons ---------- */
.btn {
    border-radius: var(--radius-sm); font-weight: 500; font-size: 0.875rem;
    padding: 8px 16px; transition: all var(--transition); border: 1px solid transparent;
    cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary {
    background: var(--primary); color: #fff; border-color: var(--primary);
    box-shadow: 0 1px 3px rgba(59,130,246,0.3);
}
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); color: #fff; }
.btn-success {
    background: var(--success); color: #fff; border-color: var(--success);
    box-shadow: 0 1px 3px rgba(16,185,129,0.3);
}
.btn-success:hover { background: #059669; border-color: #059669; color: #fff; }
.btn-outline-primary { border-color: var(--primary); color: var(--primary); background: transparent; }
.btn-outline-primary:hover { background: var(--primary-light); color: var(--primary-hover); border-color: var(--primary-hover); }
.btn-outline-secondary { border-color: var(--border); color: var(--text-secondary); background: transparent; }
.btn-outline-secondary:hover { background: var(--border-light); color: var(--text); border-color: var(--border); }
.btn-outline-warning { border-color: var(--warning); color: var(--warning); background: transparent; }
.btn-outline-warning:hover { background: var(--warning-light); color: #D97706; }
.btn-outline-danger { border-color: var(--danger); color: var(--danger); background: transparent; }
.btn-outline-danger:hover { background: var(--danger-light); color: #DC2626; }
.btn-outline-success { border-color: var(--success); color: var(--success); background: transparent; }
.btn-outline-success:hover { background: var(--success-light); color: #059669; }

.btn-group-sm > .btn, .btn-sm {
    padding: 6px 10px; font-size: 0.8rem; border-radius: 6px;
}
.btn-lg { padding: 12px 24px; font-size: 1rem; }

/* ---------- Forms ---------- */
.form-control, .form-select {
    border-radius: var(--radius-sm); border: 1px solid var(--border);
    padding: 10px 14px; font-size: 0.875rem; background-color: #fff;
    transition: all var(--transition); color: var(--text);
}
.form-control:focus, .form-select:focus {
    border-color: var(--primary); outline: none;
    box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}
.form-label { font-weight: 500; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 6px; }
.input-group-text {
    border: 1px solid var(--border); background: var(--border-light);
    color: var(--text-muted); border-radius: var(--radius-sm);
}

/* ---------- Badges ---------- */
.badge {
    font-weight: 500; padding: 4px 10px; border-radius: 6px; font-size: 0.75rem;
    display: inline-flex; align-items: center; gap: 4px;
}
.bg-primary { background-color: var(--primary) !important; }
.bg-success { background-color: var(--success) !important; }
.bg-warning { background-color: var(--warning) !important; }
.bg-danger { background-color: var(--danger) !important; }
.bg-info { background-color: var(--info) !important; }
.bg-secondary { background-color: #64748B !important; }
.text-primary { color: var(--primary) !important; }

/* ---------- Search Box ---------- */
.search-box { position: relative; }
.search-box input {
    border-radius: var(--radius-full); padding: 8px 16px 8px 38px;
    border: 1px solid var(--border); background: #fff;
    font-size: 0.875rem; min-width: 240px; transition: all var(--transition);
}
.search-box input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}
.search-box .search-icon {
    position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
    color: var(--text-muted); font-size: 0.85rem; pointer-events: none;
}

/* ---------- Nav Tabs ---------- */
.nav-tabs { border-bottom: 1px solid var(--border); }
.nav-tabs .nav-link {
    border: none; font-size: 0.875rem; font-weight: 500;
    padding: 10px 16px; color: var(--text-muted); transition: all var(--transition);
    border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.nav-tabs .nav-link:hover { color: var(--primary); border-color: transparent; }
.nav-tabs .nav-link.active {
    color: var(--primary) !important; font-weight: 600;
    border-bottom: 2px solid var(--primary) !important;
    background: transparent !important;
}

/* ---------- Toast ---------- */
.toast-container {
    position: fixed; top: 20px; right: 20px; z-index: 9999;
    display: flex; flex-direction: column; gap: 8px;
}
.toast-item {
    padding: 12px 20px; border-radius: var(--radius-sm); color: #fff;
    font-weight: 500; font-size: 0.875rem;
    box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: 10px;
    animation: toastIn 0.3s cubic-bezier(0.175,0.885,0.32,1.275); cursor: pointer;
    backdrop-filter: blur(8px);
}
.toast-success { background: var(--success); }
.toast-info { background: var(--primary); }
.toast-error { background: var(--danger); }
.toast-warning { background: var(--warning); }
.toast-out { opacity: 0; transform: translateX(50px); transition: all 0.3s ease; }
@keyframes toastIn { from { opacity:0; transform:translateX(50px); } to { opacity:1; transform:translateX(0); } }

/* ---------- List Group ---------- */
.list-group-item {
    border: 1px solid var(--border); border-radius: var(--radius-sm) !important;
    margin-bottom: 6px; padding: 14px 16px; transition: all var(--transition);
}
.list-group-item:hover { border-color: var(--primary); background: var(--primary-light); }

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size: 0.85rem; margin-bottom: 8px; }
.breadcrumb-item a { color: var(--primary); }
.breadcrumb-item.active { color: var(--text-muted); }

/* ---------- Accordion ---------- */
.accordion-button:not(.collapsed) {
    color: var(--primary); background-color: var(--primary-light);
    box-shadow: inset 0 -1px 0 var(--border);
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center; padding: 40px 20px; color: var(--text-muted);
}
.empty-state i { font-size: 2.5rem; opacity: 0.3; margin-bottom: 12px; }
.empty-state p { margin: 0; font-size: 0.9rem; }

/* ---------- Content Cards (Days) ---------- */
.card-dashed {
    border: 2px dashed var(--border) !important; background: transparent;
    transition: all var(--transition); cursor: pointer;
}
.card-dashed:hover { border-color: var(--primary) !important; background: var(--primary-light); }

/* ---------- Test Results (Trainee Detail) ---------- */
.test-week { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.test-week-summary {
    padding: 10px 16px; font-weight: 600; font-size: 0.9rem; cursor: pointer;
    list-style: none; background: var(--border-light); border-radius: var(--radius);
    display: flex; align-items: center;
}
.test-week-summary::-webkit-details-marker { display: none; }
.test-week-summary::after { content: '▸'; margin-left: auto; font-size: 1rem; transition: transform var(--transition); }
.test-week[open] > .test-week-summary::after { transform: rotate(90deg); }
.test-week[open] > .test-week-summary { background: var(--primary-light); color: var(--primary); border-radius: var(--radius) var(--radius) 0 0; }
.test-week-body { padding: 8px; }
.test-day { border: 1px solid var(--border-light); border-radius: var(--radius-sm); margin-bottom: 4px; }
.test-day-summary {
    padding: 6px 10px; cursor: pointer; list-style: none; font-size: 0.85rem;
    display: flex; align-items: center; background: #FAFBFC; border-radius: var(--radius-sm);
}
.test-day-summary::-webkit-details-marker { display: none; }
.test-day-summary::after { content: '▸'; margin-left: auto; transition: transform var(--transition); color: var(--text-muted); }
.test-day[open] > .test-day-summary::after { transform: rotate(90deg); }
.test-day[open] > .test-day-summary { background: #fff; color: var(--primary); }
.test-day-body { padding: 4px; }
.test-row {
    display: flex; align-items: flex-start; margin: 0 0 4px 4px;
    padding: 8px 12px; border-radius: 6px; font-size: 0.825rem;
}
.test-row-ok { background: rgba(16,185,129,0.06); border-left: 3px solid var(--success); }
.test-row-fail { background: rgba(239,68,68,0.06); border-left: 3px solid var(--danger); }

/* ---------- Loading Overlay ---------- */
.loading-overlay {
    position: fixed; inset: 0; background: rgba(255,255,255,0.85);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    z-index: 9999; backdrop-filter: blur(4px);
}
.spinner {
    width: 40px; height: 40px; border: 3px solid var(--border);
    border-top-color: var(--primary); border-radius: 50%;
    animation: spin 0.8s linear infinite; margin-bottom: 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ---------- Modal ---------- */
.modal-content { border: 1px solid var(--border); border-radius: var(--radius); }
.modal-header { border-bottom: 1px solid var(--border); padding: 16px 20px; }
.modal-body { padding: 20px; }
.modal-footer { border-top: 1px solid var(--border); padding: 16px 20px; }

/* ---------- Utilities ---------- */
.gap-2 { gap: 8px !important; }
.gap-3 { gap: 12px !important; }

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