/* ═══════════════════════════════════════════════════════════════
   B4L 2026 – Modern Light Theme
   ═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --primary: #6c5ce7;
    --primary-light: #a29bfe;
    --primary-dark: #4834d4;
    --success: #00b894;
    --warning: #fdcb6e;
    --danger: #e17055;
    --info: #74b9ff;
    --bg: #f0f2f5;
    --card-bg: #ffffff;
    --text: #2d3436;
    --text-muted: #636e72;
    --border: #dfe6e9;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 4px 24px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --navbar-height: 60px;
}

* {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
    background-color: var(--bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: var(--text);
    font-size: 0.925rem;
}

main {
    flex: 1;
    padding-top: 1rem !important;
}

/* ── Navbar ──────────────────────────────────────────────── */
.navbar {
    height: var(--navbar-height);
    background: rgba(255, 255, 255, 0.85) !important;
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--border) !important;
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.2rem;
    background: linear-gradient(135deg, var(--primary), #e17055);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.navbar-brand i {
    -webkit-text-fill-color: initial;
    color: var(--primary);
}

.nav-link {
    font-weight: 500;
    color: var(--text-muted) !important;
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.8rem !important;
    transition: all 0.2s ease;
    margin: 0 2px;
}

.nav-link:hover {
    color: var(--primary) !important;
    background: rgba(108, 92, 231, 0.08);
}

.nav-link.active {
    color: var(--primary) !important;
    background: rgba(108, 92, 231, 0.12);
    font-weight: 600;
}

/* ── Cards ────────────────────────────────────────────────── */
.card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    background: var(--card-bg);
    transition: box-shadow 0.25s ease, transform 0.2s ease;
}

.card:hover {
    box-shadow: var(--shadow-hover);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    padding: 1rem 1.25rem;
}

.card-body {
    padding: 1.25rem;
}

/* ── Stat cards (dashboard) ───────────────────────────────── */
.card .display-6 {
    font-size: 2rem;
}

.card.border-primary,
.card.border-success,
.card.border-info,
.card.border-warning {
    border-left: 4px solid !important;
}

/* ── Tables ────────────────────────────────────────────────── */
.table {
    margin-bottom: 0;
    color: var(--text);
}

.table > :not(caption) > * > * {
    vertical-align: middle;
    padding: 0.75rem 1rem;
    border-bottom-color: var(--border);
}

.table-striped > tbody > tr:nth-of-type(odd) {
    background-color: rgba(108, 92, 231, 0.03);
}

.table-hover > tbody > tr:hover {
    background-color: rgba(108, 92, 231, 0.06);
}

.table thead th {
    background: #f8f9fa;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
}

/* ── Attendance Grid ──────────────────────────────────────── */
.attendance-grid th,
.attendance-grid td {
    border-color: var(--border);
    font-size: 0.8rem;
}

.attendance-grid thead th {
    background: #f8f9fa;
}

.attendance-cell {
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
}

.attendance-cell:hover {
    filter: brightness(0.95);
    transform: scale(1.08);
    z-index: 1;
    position: relative;
}

.attendance-cell.bg-success {
    background-color: var(--success) !important;
}

.sticky-col {
    position: sticky;
    left: 0;
    z-index: 2;
    background-color: #fff;
    border-right: 2px solid var(--border);
}

.table-secondary {
    background-color: #f1f3f5 !important;
}

/* ── TO-DO Cards ──────────────────────────────────────────── */
.todo-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--primary-light);
    transition: box-shadow 0.2s ease, transform 0.15s ease;
}

.todo-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-1px);
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: none;
    font-weight: 600;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.35);
}

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

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

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

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

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

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

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

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

/* ── Badges ────────────────────────────────────────────────── */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
    border-radius: 6px;
}

.badge.bg-primary { background: var(--primary) !important; }
.badge.bg-success { background: var(--success) !important; }
.badge.bg-warning { background: var(--warning) !important; color: #2d3436 !important; }
.badge.bg-danger  { background: var(--danger) !important; }
.badge.bg-info    { background: var(--info) !important; color: #fff !important; }
.badge.bg-secondary { background: #b2bec3 !important; color: #fff !important; }

/* ── Forms ─────────────────────────────────────────────────── */
.form-control,
.form-select {
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.9rem;
    font-size: 0.925rem;
    transition: all 0.2s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
}

.form-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.3rem;
}

/* ── Alerts ────────────────────────────────────────────────── */
.alert {
    border-radius: var(--radius-sm);
    border: none;
}

.alert-success { background: rgba(0, 184, 148, 0.12); color: #006b54; }
.alert-warning { background: rgba(253, 203, 110, 0.2); color: #856404; }
.alert-danger  { background: rgba(225, 112, 85, 0.12); color: #943d2a; }
.alert-info    { background: rgba(116, 185, 255, 0.15); color: #2d6da8; }

/* ── Dropdown ──────────────────────────────────────────────── */
.dropdown-menu {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-hover);
}

.dropdown-item {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
}

.dropdown-item:hover {
    background: rgba(108, 92, 231, 0.08);
}

/* ── Breadcrumb ────────────────────────────────────────────── */
.breadcrumb {
    background: transparent;
    padding: 0;
}

.breadcrumb-item a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

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

/* ── Footer ────────────────────────────────────────────────── */
.footer {
    color: var(--text-muted);
    font-size: 0.85rem;
}

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

::-webkit-scrollbar-track {
    background: #e8e8e8;
}

::-webkit-scrollbar-thumb {
    background: #c0c0c0;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a0a0a0;
}

/* ── Animations ────────────────────────────────────────────── */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.card {
    animation: fadeIn 0.3s ease;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
    .sticky-col {
        position: static;
        background-color: transparent;
    }
    .attendance-grid {
        font-size: 0.7rem;
    }
    .navbar {
        backdrop-filter: none;
    }
}

/* ── Kanban Drag & Drop ──────────────────────────────────── */
.kanban-dropzone {
    min-height: 120px;
    transition: background-color 0.2s ease;
}

.kanban-dropzone.drag-over {
    background-color: rgba(108, 92, 231, 0.08);
    border-radius: var(--radius-sm);
}

.todo-card {
    cursor: grab;
    user-select: none;
}

.todo-card:active {
    cursor: grabbing;
}

.todo-card.dragging {
    opacity: 0.4;
    transform: rotate(2deg) scale(0.95);
}

.todo-card.dragging .dropdown {
    display: none;
}

.empty-column {
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ── Priority dots ───────────────────────────────────────── */
.priority-dot {
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    vertical-align: middle;
    box-shadow: 0 0 4px rgba(0,0,0,0.15);
}

.priority-dot.bg-danger {
    background-color: #e17055 !important;
    box-shadow: 0 0 6px rgba(225, 112, 85, 0.4);
}

.priority-dot.bg-warning {
    background-color: #fdcb6e !important;
    box-shadow: 0 0 6px rgba(253, 203, 110, 0.4);
}

.priority-dot.bg-success {
    background-color: #00b894 !important;
    box-shadow: 0 0 6px rgba(0, 184, 148, 0.4);
}