/* ====================================================
   SchoolMS — Main Stylesheet
   ==================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --primary:       #2563eb;
    --primary-dark:  #1d4ed8;
    --primary-light: #dbeafe;
    --secondary:     #64748b;
    --success:       #10b981;
    --success-light: #d1fae5;
    --danger:        #ef4444;
    --danger-light:  #fee2e2;
    --warning:       #f59e0b;
    --warning-light: #fef3c7;
    --purple:        #8b5cf6;
    --purple-light:  #ede9fe;
    --info:          #06b6d4;
    --info-light:    #cffafe;
    --dark:          #1e293b;
    --dark2:         #334155;
    --gray:          #64748b;
    --light-gray:    #f1f5f9;
    --border:        #e2e8f0;
    --white:         #ffffff;
    --text:          #1e293b;
    --text-muted:    #64748b;
    --sidebar-w:     260px;
    --topbar-h:      64px;
    --radius:        10px;
    --radius-sm:     6px;
    --shadow:        0 1px 8px rgba(0,0,0,0.08);
    --shadow-md:     0 4px 20px rgba(0,0,0,0.12);
    --transition:    0.2s ease;
}

html { font-size: 15px; scroll-behavior: smooth; }
body { font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; background: #f0f4f8; color: var(--text); line-height: 1.6; }
a { color: var(--primary); text-decoration: none; }
img { max-width: 100%; display: block; }

/* ─── APP LAYOUT ─────────────────────────────────────── */
.app-layout { display: flex; min-height: 100vh; }

/* ─── SIDEBAR ────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-w);
    background: var(--dark);
    color: #cbd5e1;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 200;
    transition: transform var(--transition);
    overflow-y: auto;
}
.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    flex-shrink: 0;
}
.sidebar-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 18px; }
.brand-icon {
    width: 36px; height: 36px;
    background: var(--primary);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    color: #fff; flex-shrink: 0;
}
.sidebar-toggle-close { background: none; border: none; color: #94a3b8; cursor: pointer; font-size: 18px; display: none; }

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    flex-shrink: 0;
}
.sidebar-user-avatar {
    width: 42px; height: 42px;
    border-radius: 50%;
    background: var(--primary);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 700; font-size: 18px;
    overflow: hidden; flex-shrink: 0;
}
.sidebar-user-avatar img { width: 100%; height: 100%; object-fit: cover; }
.sidebar-user-name { font-size: 14px; font-weight: 600; color: #f1f5f9; }
.sidebar-user-role { font-size: 12px; color: #94a3b8; }

.sidebar-nav { flex: 1; padding: 12px 0; }
.nav-section { padding: 0 8px; margin-bottom: 8px; }
.nav-section-title { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; color: #475569; padding: 8px 12px 4px; font-weight: 600; }
.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: #94a3b8;
    font-size: 14px;
    font-weight: 500;
    transition: background var(--transition), color var(--transition);
    margin-bottom: 2px;
}
.nav-item:hover { background: rgba(255,255,255,0.08); color: #f1f5f9; }
.nav-item.active { background: var(--primary); color: #fff; }
.nav-icon { display: flex; align-items: center; flex-shrink: 0; }

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid rgba(255,255,255,0.08);
    flex-shrink: 0;
}
.sidebar-logout {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #94a3b8;
    font-size: 14px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: background var(--transition), color var(--transition);
}
.sidebar-logout:hover { background: rgba(239,68,68,0.1); color: #ef4444; }

.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 199; }

/* ─── MAIN WRAPPER ───────────────────────────────────── */
.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-w);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ─── TOPBAR ─────────────────────────────────────────── */
.topbar {
    height: var(--topbar-h);
    background: var(--white);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}
.topbar-left { display: flex; align-items: center; gap: 16px; }
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.hamburger span { display: block; width: 22px; height: 2px; background: var(--dark); border-radius: 2px; }
.breadcrumb-title { font-size: 17px; font-weight: 700; color: var(--dark); }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.topbar-school { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--gray); }
.board-badge { background: var(--primary-light); color: var(--primary); font-size: 11px; padding: 2px 8px; border-radius: 20px; font-weight: 600; }
.topbar-time { font-size: 13px; color: var(--gray); font-weight: 500; }

/* ─── PAGE CONTENT ───────────────────────────────────── */
.page-content { flex: 1; padding: 24px; }

/* ─── STAT CARDS ─────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; margin-bottom: 24px; }
.stat-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 16px;
    border-left: 4px solid var(--primary);
    transition: box-shadow var(--transition);
}
.stat-card:hover { box-shadow: var(--shadow-md); }
.stat-card.success { border-left-color: var(--success); }
.stat-card.danger  { border-left-color: var(--danger);  }
.stat-card.warning { border-left-color: var(--warning); }
.stat-card.purple  { border-left-color: var(--purple);  }
.stat-card.info    { border-left-color: var(--info);    }
.stat-icon {
    width: 52px; height: 52px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    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.danger  { background: var(--danger-light);  color: var(--danger);  }
.stat-icon.warning { background: var(--warning-light); color: var(--warning); }
.stat-icon.purple  { background: var(--purple-light);  color: var(--purple);  }
.stat-icon.info    { background: var(--info-light);    color: var(--info);    }
.stat-info { flex: 1; }
.stat-value { font-size: 28px; font-weight: 800; color: var(--dark); line-height: 1; }
.stat-label { font-size: 13px; color: var(--gray); margin-top: 4px; }

/* ─── CARDS ──────────────────────────────────────────── */
.card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 24px;
}
.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}
.card-title { font-size: 16px; font-weight: 700; color: var(--dark); }
.card-body { padding: 20px; }
.card-footer { padding: 12px 20px; background: var(--light-gray); border-top: 1px solid var(--border); }

/* ─── TABLES ─────────────────────────────────────────── */
.table-responsive { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
thead th { background: #f8fafc; padding: 12px 16px; font-weight: 600; color: var(--gray); text-align: left; border-bottom: 2px solid var(--border); white-space: nowrap; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
tbody td { padding: 12px 16px; border-bottom: 1px solid var(--border); color: var(--text); vertical-align: middle; }
tbody tr:hover { background: #f8fafc; }
tbody tr:last-child td { border-bottom: none; }
.table-empty { text-align: center; padding: 40px; color: var(--gray); font-style: italic; }

/* ─── FORMS ──────────────────────────────────────────── */
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 13px; font-weight: 600; color: var(--dark2); }
.form-label .req { color: var(--danger); margin-left: 2px; }
.form-control {
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text);
    outline: none;
    transition: border-color var(--transition);
    background: var(--white);
    width: 100%;
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.form-control.is-invalid { border-color: var(--danger); }
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 90px; }
.form-text { font-size: 12px; color: var(--gray); margin-top: 2px; }
.form-actions { display: flex; gap: 12px; margin-top: 24px; }

/* ─── BUTTONS ────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background var(--transition), box-shadow var(--transition);
    white-space: nowrap;
    text-decoration: none;
    line-height: 1;
}
.btn:hover { opacity: .9; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 16px; }
.btn-primary  { background: var(--primary);  color: #fff; }
.btn-success  { background: var(--success);  color: #fff; }
.btn-danger   { background: var(--danger);   color: #fff; }
.btn-warning  { background: var(--warning);  color: #fff; }
.btn-purple   { background: var(--purple);   color: #fff; }
.btn-info     { background: var(--info);     color: #fff; }
.btn-secondary{ background: var(--light-gray); color: var(--dark); border: 1px solid var(--border); }
.btn-outline-primary { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline-danger  { background: transparent; color: var(--danger);  border: 1.5px solid var(--danger);  }
.btn-icon { padding: 7px; border-radius: var(--radius-sm); }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

/* ─── BADGES ─────────────────────────────────────────── */
.badge { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; white-space: nowrap; }
.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-success { background: var(--success-light); color: #065f46; }
.badge-danger  { background: var(--danger-light);  color: #991b1b; }
.badge-warning { background: var(--warning-light); color: #92400e; }
.badge-purple  { background: var(--purple-light);  color: #5b21b6; }
.badge-info    { background: var(--info-light);    color: #0e7490; }
.badge-secondary{ background: #f1f5f9; color: var(--gray); }

/* ─── ATTENDANCE GRID ────────────────────────────────── */
.attendance-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 12px; }
.attend-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition);
}
.attend-row.present  { border-left: 4px solid var(--success); }
.attend-row.absent   { border-left: 4px solid var(--danger);  }
.attend-row.late     { border-left: 4px solid var(--warning); }
.attend-row.half_day { border-left: 4px solid var(--info);    }
.student-info { display: flex; align-items: center; gap: 12px; }
.student-avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; flex-shrink: 0; overflow: hidden; }
.student-avatar img { width: 100%; height: 100%; object-fit: cover; }
.student-name { font-size: 14px; font-weight: 600; color: var(--dark); }
.student-roll { font-size: 12px; color: var(--gray); }
.attend-status-btns { display: flex; gap: 4px; }
.status-btn {
    padding: 5px 10px;
    border: 1.5px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    font-weight: 600;
    background: var(--white);
    color: var(--gray);
    transition: all var(--transition);
}
.status-btn.active-P, .status-btn:hover.status-btn-P { background: var(--success); border-color: var(--success); color: #fff; }
.status-btn.active-A, .status-btn:hover.status-btn-A { background: var(--danger);  border-color: var(--danger);  color: #fff; }
.status-btn.active-L, .status-btn:hover.status-btn-L { background: var(--warning); border-color: var(--warning); color: #fff; }
.status-btn.active-H, .status-btn:hover.status-btn-H { background: var(--info);    border-color: var(--info);    color: #fff; }

/* ─── MODALS ─────────────────────────────────────────── */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn .15s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-box {
    background: var(--white);
    border-radius: 14px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    animation: slideUp .2s ease;
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.modal-box.modal-lg { max-width: 800px; }
.modal-box.modal-xl { max-width: 1000px; }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid var(--border); }
.modal-title { font-size: 17px; font-weight: 700; color: var(--dark); }
.modal-close { background: none; border: none; cursor: pointer; color: var(--gray); padding: 4px; border-radius: 4px; }
.modal-close:hover { background: var(--light-gray); color: var(--dark); }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 12px; }
.confirm-box { max-width: 440px; text-align: center; padding: 40px 32px; }
.modal-icon { width: 64px; height: 64px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; }
.modal-icon.danger { background: var(--danger-light); color: var(--danger); }
.modal-msg { color: var(--gray); font-size: 15px; margin: 8px 0 24px; }
.modal-actions { display: flex; gap: 12px; justify-content: center; }

/* ─── TOASTS ─────────────────────────────────────────── */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    min-width: 300px;
    max-width: 420px;
    box-shadow: var(--shadow-md);
    animation: slideInRight .3s ease;
    border-left: 4px solid var(--primary);
}
@keyframes slideInRight { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
.toast.success { border-left-color: var(--success); }
.toast.error   { border-left-color: var(--danger);  }
.toast.warning { border-left-color: var(--warning); }
.toast-msg { flex: 1; font-size: 14px; }
.toast-close { background: none; border: none; cursor: pointer; color: var(--gray); font-size: 18px; }

/* ─── TABS ───────────────────────────────────────────── */
.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--border); margin-bottom: 24px; overflow-x: auto; }
.tab-btn {
    padding: 10px 20px;
    background: none;
    border: none;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
    transition: color var(--transition);
}
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ─── SEARCH & FILTERS ───────────────────────────────── */
.search-bar { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
.search-input-wrap { position: relative; flex: 1; min-width: 200px; }
.search-input-wrap input { padding-left: 36px; }
.search-icon { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--gray); }

/* ─── PAGINATION ─────────────────────────────────────── */
.pagination { display: flex; align-items: center; gap: 4px; justify-content: center; margin-top: 20px; flex-wrap: wrap; }
.page-btn { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: var(--radius-sm); border: 1.5px solid var(--border); background: var(--white); color: var(--dark); cursor: pointer; font-size: 14px; font-weight: 500; transition: all var(--transition); text-decoration: none; }
.page-btn:hover, .page-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ─── ALERTS ─────────────────────────────────────────── */
.alert { padding: 12px 16px; border-radius: var(--radius-sm); font-size: 14px; display: flex; align-items: flex-start; gap: 10px; margin-bottom: 16px; }
.alert-success { background: var(--success-light); color: #065f46; border: 1px solid #a7f3d0; }
.alert-danger  { background: var(--danger-light);  color: #991b1b; border: 1px solid #fca5a5; }
.alert-warning { background: var(--warning-light); color: #92400e; border: 1px solid #fde68a; }
.alert-info    { background: var(--info-light);    color: #0e7490; border: 1px solid #a5f3fc; }

/* ─── LOADING SPINNER ────────────────────────────────── */
.spinner { display: inline-block; width: 20px; height: 20px; border: 2.5px solid rgba(37,99,235,0.2); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-overlay { position: fixed; inset: 0; background: rgba(255,255,255,0.7); z-index: 999; display: flex; align-items: center; justify-content: center; }

/* ─── PROGRESS BAR ───────────────────────────────────── */
.progress { background: var(--border); border-radius: 20px; height: 8px; overflow: hidden; }
.progress-bar { height: 100%; border-radius: 20px; background: var(--primary); transition: width 0.5s ease; }
.progress-bar.success { background: var(--success); }
.progress-bar.danger  { background: var(--danger);  }
.progress-bar.warning { background: var(--warning); }

/* ─── AVATAR ─────────────────────────────────────────── */
.avatar { border-radius: 50%; object-fit: cover; display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; overflow: hidden; }
.avatar-sm { width: 32px; height: 32px; font-size: 13px; }
.avatar-md { width: 44px; height: 44px; font-size: 17px; }
.avatar-lg { width: 64px; height: 64px; font-size: 24px; }

/* ─── DASHBOARD WIDGETS ──────────────────────────────── */
.dashboard-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; }
.widget { background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); }
.widget-header { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.widget-title { font-size: 15px; font-weight: 700; color: var(--dark); }
.widget-body { padding: 0; }

/* Recent activity */
.activity-list { list-style: none; }
.activity-item { display: flex; align-items: flex-start; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--border); }
.activity-item:last-child { border-bottom: none; }
.activity-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); margin-top: 6px; flex-shrink: 0; }
.activity-text { font-size: 13px; color: var(--text); line-height: 1.5; }
.activity-time { font-size: 11px; color: var(--gray); margin-top: 2px; }

/* Notice list */
.notice-list { list-style: none; }
.notice-item { padding: 14px 20px; border-bottom: 1px solid var(--border); }
.notice-item:last-child { border-bottom: none; }
.notice-title { font-size: 14px; font-weight: 600; color: var(--dark); margin-bottom: 4px; }
.notice-meta { font-size: 12px; color: var(--gray); }

/* ─── TIMETABLE GRID ─────────────────────────────────── */
.timetable-table { font-size: 13px; }
.timetable-table th { background: var(--dark); color: #fff; text-transform: none; letter-spacing: 0; }
.period-cell { background: var(--primary-light); color: var(--primary); padding: 8px; border-radius: var(--radius-sm); text-align: center; font-size: 12px; }
.period-cell strong { display: block; font-size: 13px; margin-bottom: 2px; }

/* ─── FEE RECEIPT ────────────────────────────────────── */
.receipt { background: var(--white); padding: 32px; max-width: 600px; margin: 0 auto; border: 1px solid var(--border); }
.receipt-header { text-align: center; border-bottom: 2px solid var(--dark); padding-bottom: 16px; margin-bottom: 20px; }
.receipt-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px dashed var(--border); font-size: 14px; }
.receipt-total { display: flex; justify-content: space-between; padding: 12px 0; font-size: 16px; font-weight: 700; border-top: 2px solid var(--dark); margin-top: 8px; }

/* ─── UTILITIES ──────────────────────────────────────── */
.d-flex    { display: flex; }
.d-grid    { display: grid; }
.d-none    { display: none; }
.flex-col  { flex-direction: column; }
.items-center   { align-items: center; }
.justify-between{ justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-8  { gap: 8px;  }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--gray); }
.text-success{ color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning{ color: var(--warning); }
.text-primary{ color: var(--primary); }
.fw-bold  { font-weight: 700; }
.fw-600   { font-weight: 600; }
.fs-sm    { font-size: 13px; }
.fs-xs    { font-size: 11px; }
.mb-0  { margin-bottom: 0;   }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px;}
.mb-24 { margin-bottom: 24px;}
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px;}
.mt-24 { margin-top: 24px;}
.p-0   { padding: 0; }
.w-full{ width: 100%; }
.rounded { border-radius: var(--radius-sm); }
.cursor-pointer { cursor: pointer; }
.hidden { display: none !important; }

/* ─── NAV-LINK (Phase 2 sidebar alias) ──────────────────── */
.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: #94a3b8;
    font-size: 14px;
    font-weight: 500;
    transition: background var(--transition), color var(--transition);
    margin-bottom: 2px;
}
.nav-link:hover { background: rgba(255,255,255,0.08); color: #f1f5f9; }
.nav-link.active { background: var(--primary); color: #fff; }

/* ─── TAB-PANEL (alias for tab-pane) ────────────────────── */
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ─── MODAL (alias for modal-box) ───────────────────────── */
.modal {
    background: var(--white);
    border-radius: 14px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    animation: slideUp .2s ease;
}
.modal.modal-lg { max-width: 800px; }
.modal.modal-xl { max-width: 1000px; }

/* ─── TOPBAR EXTRAS ──────────────────────────────────────── */
.topbar-user { display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 600; color: var(--dark); }
.topbar-clock { font-size: 13px; color: var(--gray); font-weight: 500; }
.user-avatar-placeholder {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 14px;
}

/* ─── SIDEBAR BRAND EXTRAS ───────────────────────────────── */
.brand-logo { width: 36px; height: 36px; border-radius: 8px; object-fit: contain; }
.brand-name { font-weight: 700; font-size: 16px; color: #fff; line-height: 1.2; }
.sidebar-role-badge {
    display: inline-block;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(255,255,255,0.15);
    color: #cbd5e1;
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 600;
    margin-top: 2px;
}

/* ─── BADGE COLOR ALIASES ────────────────────────────────── */
.badge-blue   { background: var(--primary-light); color: var(--primary); }
.badge-green  { background: var(--success-light); color: #065f46; }
.badge-red    { background: var(--danger-light);  color: #991b1b; }
.badge-gray   { background: #f1f5f9; color: var(--gray); }
.badge-yellow { background: var(--warning-light); color: #92400e; }

/* ─── ATTENDANCE PHASE 2 STRUCTURE ──────────────────────── */
.attend-info { display: flex; align-items: center; gap: 12px; }
.attend-name { font-size: 14px; font-weight: 600; color: var(--dark); }
.attend-roll { font-size: 12px; color: var(--gray); }
.attend-btns { display: flex; gap: 4px; }

/* Status btn active states (Phase 2 pattern) */
.status-btn.active  { background: var(--success); border-color: var(--success); color: #fff; }
.status-btn.present { background: var(--success); border-color: var(--success); color: #fff; }
.status-btn.absent  { background: var(--danger);  border-color: var(--danger);  color: #fff; }
.status-btn.late    { background: var(--warning); border-color: var(--warning); color: #fff; }
.status-btn.half    { background: var(--info);    border-color: var(--info);    color: #fff; }

/* ─── FORM HINT ──────────────────────────────────────────── */
.form-hint { font-size: 12px; color: var(--gray); margin-top: 4px; font-style: italic; }

/* ─── SIDEBAR-LIGHT VARIANT ──────────────────────────────── */
body.sidebar-light .sidebar {
    background: #ffffff;
    border-right: 1px solid var(--border);
    color: var(--dark);
}
body.sidebar-light .sidebar-header { border-bottom-color: var(--border); }
body.sidebar-light .sidebar-user   { border-bottom-color: var(--border); }
body.sidebar-light .sidebar-footer { border-top-color: var(--border); }
body.sidebar-light .brand-name,
body.sidebar-light .sidebar-brand  { color: var(--primary); }
body.sidebar-light .sidebar-user-name { color: var(--dark); }
body.sidebar-light .sidebar-user-role { color: var(--gray); }
body.sidebar-light .nav-section-title { color: var(--text-muted); }
body.sidebar-light .nav-item,
body.sidebar-light .nav-link { color: var(--gray); }
body.sidebar-light .nav-item:hover,
body.sidebar-light .nav-link:hover { background: var(--light-gray); color: var(--dark); }
body.sidebar-light .nav-item.active,
body.sidebar-light .nav-link.active { background: var(--primary-light); color: var(--primary); }
body.sidebar-light .sidebar-logout { color: var(--gray); }
body.sidebar-light .sidebar-role-badge { background: var(--light-gray); color: var(--gray); }

/* ─── SIDEBAR-COLORED VARIANT ────────────────────────────── */
body.sidebar-colored .sidebar { background: var(--primary); color: rgba(255,255,255,0.8); }
body.sidebar-colored .sidebar-header,
body.sidebar-colored .sidebar-user,
body.sidebar-colored .sidebar-footer { border-color: rgba(255,255,255,0.15); }
body.sidebar-colored .sidebar-brand,
body.sidebar-colored .brand-name,
body.sidebar-colored .sidebar-user-name { color: #fff; }
body.sidebar-colored .sidebar-user-role { color: rgba(255,255,255,0.6); }
body.sidebar-colored .nav-section-title { color: rgba(255,255,255,0.5); }
body.sidebar-colored .nav-item,
body.sidebar-colored .nav-link { color: rgba(255,255,255,0.75); }
body.sidebar-colored .nav-item:hover,
body.sidebar-colored .nav-link:hover { background: rgba(255,255,255,0.15); color: #fff; }
body.sidebar-colored .nav-item.active,
body.sidebar-colored .nav-link.active { background: rgba(255,255,255,0.25); color: #fff; }
body.sidebar-colored .sidebar-logout { color: rgba(255,255,255,0.75); }
body.sidebar-colored .sidebar-role-badge { background: rgba(255,255,255,0.2); color: #fff; }

/* ─── TOP-NAV VARIANT ────────────────────────────────────── */
body.top-nav .app-layout { flex-direction: column; }
body.top-nav .sidebar {
    position: static;
    width: 100%;
    height: auto;
    flex-direction: row;
    align-items: center;
    overflow: visible;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
body.top-nav .main-wrapper { margin-left: 0; }
body.top-nav .sidebar-nav {
    display: flex;
    flex-direction: row;
    flex: 1;
    padding: 0 8px;
    overflow-x: auto;
}
body.top-nav .nav-section { display: flex; flex-direction: row; padding: 0; margin: 0; }
body.top-nav .nav-section-title { display: none; }
body.top-nav .nav-item,
body.top-nav .nav-link { margin: 0 2px; padding: 8px 14px; white-space: nowrap; }
body.top-nav .sidebar-header { border-bottom: none; flex-shrink: 0; }
body.top-nav .sidebar-user { border: none; padding: 8px 16px; }
body.top-nav .sidebar-footer { border: none; padding: 8px 16px; }

/* ─── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .sidebar-overlay.open { display: block; }
    .sidebar-toggle-close { display: flex !important; }
    .main-wrapper { margin-left: 0; }
    .hamburger { display: flex; }
    .topbar-school { display: none; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .dashboard-grid { grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .page-content { padding: 16px; }
    .card-header { flex-direction: column; align-items: flex-start; }
    body.top-nav .sidebar-nav { flex-direction: column; }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .attendance-grid { grid-template-columns: 1fr; }
    .modal-box, .modal { max-width: 100%; border-radius: 0; }
    .topbar { padding: 0 12px; }
    .breadcrumb-title { font-size: 15px; }
}