/* =============================================
   PORTAL SHARED CSS — Login / Student / Admin
   ============================================= */
:root {
    --navy: #0d1b4c;
    --navy-light: #142463;
    --navy-dark: #0a1333;
    --gold: #f5a623;
    --gold-hover: #e09500;
    --orange: #ff7a18;
    --white: #ffffff;
    --light-bg: #f4f7fc;
    --gray-100: #f0f2f7;
    --gray-200: #e2e6ef;
    --gray-300: #c5cad8;
    --gray-600: #6b7280;
    --gray-800: #2d3748;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f5a623;
    --info: #3b82f6;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.2);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    --sidebar-width: 280px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-main); color: var(--text-primary); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* Shared Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px; border: none; border-radius: var(--radius-sm);
    font-family: var(--font-main); font-size: 0.95rem; font-weight: 600;
    cursor: pointer; transition: var(--transition); text-align: center;
    justify-content: center; line-height: 1.4; position: relative; overflow: hidden;
}
.btn--primary { background: linear-gradient(135deg, var(--navy), var(--navy-light)); color: var(--white); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(13,27,76,0.3); }
.btn--gold { background: linear-gradient(135deg, var(--gold), var(--orange)); color: var(--white); }
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(245,166,35,0.3); }
.btn--danger { background: var(--danger); color: var(--white); }
.btn--danger:hover { opacity: 0.9; }
.btn--outline-dark { background: transparent; border: 2px solid var(--gray-200); color: var(--gray-800); }
.btn--outline-dark:hover { border-color: var(--navy); color: var(--navy); }
.btn--sm { padding: 8px 16px; font-size: 0.82rem; }
.btn--lg { padding: 16px 36px; font-size: 1.05rem; }
.btn--full { width: 100%; }

/* ==========================================
   LOGIN PAGE
   ========================================== */
.login-page {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: var(--navy-dark); position: relative; overflow: hidden;
}

.login-bg { position: fixed; inset: 0; z-index: 0; }

.login-glow {
    position: absolute; border-radius: 50%; filter: blur(100px);
    animation: loginGlow 10s ease-in-out infinite;
}
.login-glow--1 { width: 500px; height: 500px; background: rgba(245,166,35,0.1); top: -15%; right: 5%; }
.login-glow--2 { width: 400px; height: 400px; background: rgba(100,130,255,0.06); bottom: -10%; left: 5%; animation-delay: 5s; }
@keyframes loginGlow {
    0%,100% { transform: translate(0,0) scale(1); }
    50% { transform: translate(40px,-30px) scale(1.15); }
}

.login-grid-bg {
    position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
                       linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
    background-size: 50px 50px;
}

.login-container { position: relative; z-index: 1; width: 100%; max-width: 480px; padding: 30px 20px; }

.login-back {
    display: inline-flex; align-items: center; gap: 8px; color: rgba(255,255,255,0.6);
    font-size: 0.88rem; font-weight: 500; margin-bottom: 24px; transition: var(--transition);
}
.login-back:hover { color: var(--gold); transform: translateX(-4px); }

.login-card {
    background: var(--white); border-radius: var(--radius-lg); padding: 40px;
    box-shadow: var(--shadow-xl); animation: cardIn 0.6s ease;
}
@keyframes cardIn { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

.login-card__header { text-align: center; margin-bottom: 28px; }

.login-logo {
    width: 64px; height: 64px; margin: 0 auto 16px; border-radius: 50%;
    background: linear-gradient(135deg, var(--navy), var(--navy-light));
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; color: var(--gold);
}

.login-card__header h1 { font-size: 1.3rem; font-weight: 800; color: var(--navy); }
.login-card__header p { font-size: 0.88rem; color: var(--text-secondary); margin-top: 4px; }

/* Login Tabs */
.login-tabs { display: flex; gap: 8px; margin-bottom: 28px; }

.login-tab {
    flex: 1; padding: 12px; border: 2px solid var(--gray-200); border-radius: var(--radius-sm);
    background: var(--white); font-family: var(--font-main); font-size: 0.85rem; font-weight: 600;
    color: var(--gray-600); cursor: pointer; transition: var(--transition);
    display: flex; align-items: center; justify-content: center; gap: 6px;
}
.login-tab:hover { border-color: var(--navy); color: var(--navy); }
.login-tab.active { background: var(--navy); color: var(--white); border-color: var(--navy); }

/* Form */
.login-form .form-group { margin-bottom: 20px; }
.login-form .form-group label {
    display: flex; align-items: center; gap: 6px;
    font-size: 0.85rem; font-weight: 600; color: var(--gray-800); margin-bottom: 8px;
}
.login-form .form-group label i { color: var(--gold); font-size: 0.8rem; }

.login-form input[type="text"],
.login-form input[type="password"] {
    width: 100%; padding: 14px 16px; border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm); font-family: var(--font-main);
    font-size: 0.95rem; color: var(--text-primary); transition: var(--transition);
}
.login-form input:focus { outline: none; border-color: var(--navy); box-shadow: 0 0 0 4px rgba(13,27,76,0.06); }

.password-wrap { position: relative; }
.password-wrap input { padding-right: 48px; }
.password-toggle {
    position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
    background: none; border: none; color: var(--gray-600); cursor: pointer; font-size: 1rem;
}

.form-options { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }

.checkbox-wrap {
    display: flex; align-items: center; gap: 8px; font-size: 0.85rem;
    color: var(--text-secondary); cursor: pointer;
}
.checkbox-wrap input { width: 16px; height: 16px; accent-color: var(--navy); }

.login-error {
    margin-top: 16px; padding: 12px 16px; background: rgba(239,68,68,0.08);
    border: 1px solid rgba(239,68,68,0.2); border-radius: var(--radius-sm);
    color: var(--danger); font-size: 0.85rem; font-weight: 500;
    display: flex; align-items: center; gap: 8px; animation: shake 0.4s ease;
}
@keyframes shake {
    0%,100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

.login-footer { text-align: center; margin-top: 24px; }
.login-footer p { font-size: 0.85rem; color: var(--text-secondary); }
.login-footer a { color: var(--navy); font-weight: 600; }
.login-footer a:hover { color: var(--gold); }

.login-demo-info {
    margin-top: 24px; padding: 20px; background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-md);
}
.login-demo-info h4 { color: rgba(255,255,255,0.7); font-size: 0.85rem; margin-bottom: 10px; display: flex; align-items: center; gap: 6px; }
.demo-creds { display: flex; gap: 16px; }
.demo-cred { font-size: 0.8rem; color: rgba(255,255,255,0.5); }
.demo-cred strong { color: var(--gold); }

/* ==========================================
   PORTAL LAYOUT (Sidebar + Main)
   ========================================== */
.portal { display: flex; min-height: 100vh; background: var(--light-bg); }

/* Sidebar */
.sidebar {
    width: var(--sidebar-width); background: var(--navy-dark);
    color: var(--white); position: fixed; top: 0; left: 0; bottom: 0;
    display: flex; flex-direction: column; z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar__header {
    padding: 24px; border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex; align-items: center; gap: 12px;
}
.sidebar__logo-icon {
    width: 44px; height: 44px; border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--gold), var(--orange));
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; color: var(--white);
}
.sidebar__brand h3 { font-size: 0.95rem; font-weight: 700; line-height: 1.2; }
.sidebar__brand span { font-size: 0.7rem; color: rgba(255,255,255,0.5); }

.sidebar__nav { flex: 1; padding: 20px 12px; overflow-y: auto; }
.sidebar__section-title { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 2px; color: rgba(255,255,255,0.3); padding: 12px 12px 8px; }

.sidebar__link {
    display: flex; align-items: center; gap: 12px; padding: 12px 16px;
    border-radius: var(--radius-sm); font-size: 0.9rem; font-weight: 500;
    color: rgba(255,255,255,0.6); transition: var(--transition); margin-bottom: 2px;
    cursor: pointer; border: none; background: none; width: 100%; text-align: left;
    font-family: var(--font-main);
}
.sidebar__link:hover { background: rgba(255,255,255,0.06); color: var(--white); }
.sidebar__link.active { background: rgba(245,166,35,0.15); color: var(--gold); }
.sidebar__link i { width: 20px; text-align: center; font-size: 1rem; }
.sidebar__link .badge {
    margin-left: auto; background: var(--gold); color: var(--navy-dark);
    padding: 2px 8px; border-radius: 50px; font-size: 0.7rem; font-weight: 700;
}

.sidebar__footer {
    padding: 20px; border-top: 1px solid rgba(255,255,255,0.08);
}
.sidebar__user {
    display: flex; align-items: center; gap: 10px; margin-bottom: 12px;
}
.sidebar__avatar {
    width: 38px; height: 38px; border-radius: 50%;
    background: linear-gradient(135deg, var(--gold), var(--orange));
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem; font-weight: 700; color: var(--white);
}
.sidebar__user-info h4 { font-size: 0.85rem; font-weight: 600; }
.sidebar__user-info span { font-size: 0.72rem; color: rgba(255,255,255,0.4); }

.sidebar__logout {
    display: flex; align-items: center; gap: 8px; padding: 10px 16px;
    border-radius: var(--radius-sm); background: rgba(239,68,68,0.1);
    color: #ff6b6b; font-size: 0.85rem; font-weight: 600;
    border: none; cursor: pointer; width: 100%; font-family: var(--font-main);
    transition: var(--transition);
}
.sidebar__logout:hover { background: rgba(239,68,68,0.2); }

/* Main Content */
.portal__main {
    margin-left: var(--sidebar-width); flex: 1; min-height: 100vh;
}

.portal__topbar {
    background: var(--white); padding: 16px 32px; border-bottom: 1px solid var(--gray-200);
    display: flex; align-items: center; justify-content: space-between;
    position: sticky; top: 0; z-index: 50;
}
.topbar__left { display: flex; align-items: center; gap: 16px; }

.sidebar-toggle {
    display: none; background: none; border: none; font-size: 1.3rem;
    color: var(--navy); cursor: pointer;
}

.topbar__title h2 { font-size: 1.2rem; font-weight: 700; color: var(--navy); }
.topbar__title span { font-size: 0.8rem; color: var(--text-secondary); }

.topbar__right { display: flex; align-items: center; gap: 16px; }

.topbar__btn {
    width: 40px; height: 40px; border-radius: 50%; background: var(--gray-100);
    display: flex; align-items: center; justify-content: center;
    color: var(--gray-600); border: none; cursor: pointer; transition: var(--transition);
    position: relative; font-size: 1rem;
}
.topbar__btn:hover { background: var(--navy); color: var(--white); }
.topbar__btn .notif-dot {
    position: absolute; top: 8px; right: 8px; width: 8px; height: 8px;
    background: var(--danger); border-radius: 50%; border: 2px solid var(--white);
}

.portal__content { padding: 32px; }

/* Page Sections (toggleable) */
.portal-page { display: none; animation: pageIn 0.4s ease; }
.portal-page.active { display: block; }
@keyframes pageIn { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }

/* ==========================================
   DASHBOARD CARDS / STATS
   ========================================== */
.stats-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px; margin-bottom: 32px;
}

.stat-card {
    background: var(--white); padding: 24px; border-radius: var(--radius-md);
    border: 1px solid var(--gray-200); display: flex; align-items: center; gap: 16px;
    transition: var(--transition);
}
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.stat-card__icon {
    width: 52px; height: 52px; border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center; font-size: 1.3rem;
}
.stat-card__icon--blue { background: rgba(59,130,246,0.1); color: var(--info); }
.stat-card__icon--gold { background: rgba(245,166,35,0.1); color: var(--gold); }
.stat-card__icon--green { background: rgba(34,197,94,0.1); color: var(--success); }
.stat-card__icon--orange { background: rgba(255,122,24,0.1); color: var(--orange); }

.stat-card__info h3 { font-size: 1.6rem; font-weight: 800; color: var(--navy); line-height: 1; }
.stat-card__info p { font-size: 0.82rem; color: var(--text-secondary); margin-top: 4px; }

/* ==========================================
   DATA TABLE
   ========================================== */
.data-card {
    background: var(--white); border-radius: var(--radius-md);
    border: 1px solid var(--gray-200); overflow: hidden; margin-bottom: 24px;
}
.data-card__header {
    padding: 20px 24px; border-bottom: 1px solid var(--gray-200);
    display: flex; align-items: center; justify-content: space-between;
}
.data-card__header h3 { font-size: 1.1rem; font-weight: 700; color: var(--navy); }
.data-card__body { padding: 0; }

.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
    padding: 14px 20px; text-align: left; font-size: 0.78rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 1px; color: var(--gray-600);
    background: var(--gray-100); border-bottom: 1px solid var(--gray-200);
}
.data-table td {
    padding: 14px 20px; font-size: 0.9rem; color: var(--text-primary);
    border-bottom: 1px solid var(--gray-100);
}
.data-table tr:hover td { background: rgba(245,166,35,0.03); }
.data-table tr:last-child td { border-bottom: none; }

.badge-status {
    display: inline-block; padding: 4px 12px; border-radius: 50px;
    font-size: 0.72rem; font-weight: 600;
}
.badge-status--active { background: rgba(34,197,94,0.1); color: var(--success); }
.badge-status--inactive { background: rgba(239,68,68,0.1); color: var(--danger); }
.badge-status--pending { background: rgba(245,166,35,0.1); color: var(--warning); }

/* Action buttons in table */
.table-actions { display: flex; gap: 6px; }
.table-action-btn {
    width: 32px; height: 32px; border-radius: var(--radius-sm); border: 1px solid var(--gray-200);
    background: var(--white); display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: var(--transition); font-size: 0.8rem; color: var(--gray-600);
}
.table-action-btn:hover { background: var(--navy); color: var(--white); border-color: var(--navy); }
.table-action-btn--danger:hover { background: var(--danger); border-color: var(--danger); }

/* ==========================================
   CONTENT CARDS (Notes, Material etc)
   ========================================== */
.content-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px; margin-bottom: 24px;
}

.content-card {
    background: var(--white); border-radius: var(--radius-md);
    border: 1px solid var(--gray-200); overflow: hidden; transition: var(--transition);
}
.content-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.content-card__thumb {
    height: 140px; background: linear-gradient(135deg, var(--navy), var(--navy-light));
    display: flex; align-items: center; justify-content: center;
    font-size: 2.5rem; color: rgba(245,166,35,0.4); position: relative;
}
.content-card__thumb-badge {
    position: absolute; top: 12px; right: 12px; padding: 4px 10px;
    background: rgba(0,0,0,0.3); backdrop-filter: blur(8px);
    border-radius: 50px; font-size: 0.7rem; color: var(--white); font-weight: 600;
}

.content-card__body { padding: 20px; }
.content-card__body h4 { font-size: 1rem; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.content-card__body p { font-size: 0.82rem; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.5; }

.content-card__meta {
    display: flex; align-items: center; justify-content: space-between;
    font-size: 0.78rem; color: var(--gray-600);
}
.content-card__meta i { margin-right: 4px; }

/* ==========================================
   FORMS IN MODALS
   ========================================== */
.portal-modal {
    display: none; position: fixed; inset: 0; z-index: 2000;
    background: rgba(0,0,0,0.5); backdrop-filter: blur(6px);
    align-items: center; justify-content: center;
}
.portal-modal.active { display: flex; }

.portal-modal__content {
    background: var(--white); border-radius: var(--radius-lg); padding: 40px;
    max-width: 560px; width: 90%; max-height: 90vh; overflow-y: auto;
    animation: cardIn 0.3s ease;
}
.portal-modal__header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 28px;
}
.portal-modal__header h3 { font-size: 1.2rem; font-weight: 700; color: var(--navy); }
.portal-modal__close {
    width: 36px; height: 36px; border-radius: 50%; background: var(--gray-100);
    border: none; cursor: pointer; font-size: 1rem; color: var(--gray-600);
    display: flex; align-items: center; justify-content: center; transition: var(--transition);
}
.portal-modal__close:hover { background: var(--danger); color: var(--white); }

.portal-form .form-group { margin-bottom: 18px; }
.portal-form label {
    display: block; font-size: 0.85rem; font-weight: 600;
    color: var(--gray-800); margin-bottom: 6px;
}
.portal-form input, .portal-form select, .portal-form textarea {
    width: 100%; padding: 12px 14px; border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm); font-family: var(--font-main);
    font-size: 0.9rem; color: var(--text-primary); transition: var(--transition);
}
.portal-form input:focus, .portal-form select:focus, .portal-form textarea:focus {
    outline: none; border-color: var(--navy); box-shadow: 0 0 0 4px rgba(13,27,76,0.06);
}
.portal-form textarea { resize: vertical; min-height: 100px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ==========================================
   EMPTY STATES
   ========================================== */
.empty-state {
    text-align: center; padding: 60px 20px; color: var(--text-secondary);
}
.empty-state i { font-size: 3rem; color: var(--gray-300); margin-bottom: 16px; }
.empty-state h4 { font-size: 1.1rem; color: var(--navy); margin-bottom: 8px; }
.empty-state p { font-size: 0.9rem; max-width: 400px; margin: 0 auto; }

/* ==========================================
   TOAST NOTIFICATIONS
   ========================================== */
.toast-container { position: fixed; top: 24px; right: 24px; z-index: 9999; display: flex; flex-direction: column; gap: 10px; }

.toast {
    padding: 14px 20px; border-radius: var(--radius-sm); background: var(--white);
    box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: 10px;
    font-size: 0.88rem; font-weight: 500; min-width: 280px;
    animation: toastIn 0.4s ease, toastOut 0.4s ease 2.6s forwards;
}
.toast--success { border-left: 4px solid var(--success); }
.toast--error { border-left: 4px solid var(--danger); }
.toast--info { border-left: 4px solid var(--info); }
.toast i { font-size: 1.1rem; }
.toast--success i { color: var(--success); }
.toast--error i { color: var(--danger); }
.toast--info i { color: var(--info); }

@keyframes toastIn { from { opacity: 0; transform: translateX(100%); } to { opacity: 1; transform: translateX(0); } }
@keyframes toastOut { to { opacity: 0; transform: translateX(100%); } }

/* ==========================================
   RESPONSIVE PORTAL
   ========================================== */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .sidebar-toggle { display: block; }
    .portal__main { margin-left: 0; }
    .portal__topbar { padding: 14px 20px; }
    .portal__content { padding: 20px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .content-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .data-table { font-size: 0.82rem; }
    .data-table th, .data-table td { padding: 10px 12px; }

    .sidebar-overlay {
        display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5);
        z-index: 99;
    }
    .sidebar.open + .sidebar-overlay { display: block; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .login-card { padding: 28px; }
}

/* ── Quick Action Buttons (Admin) ── */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}
.quick-action-btn {
    display: flex; align-items: center; gap: 10px;
    padding: 16px 20px;
    background: rgba(245,166,35,.08);
    border: 1px solid rgba(245,166,35,.2);
    border-radius: var(--radius-sm);
    color: var(--gold);
    font-size: .95rem; font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.quick-action-btn:hover {
    background: rgba(245,166,35,.18);
    border-color: var(--gold);
    transform: translateY(-2px);
}
.quick-action-btn i { font-size: 1.1rem; }

/* ── Btn variants ── */
.btn--sm { padding: 6px 14px; font-size: .82rem; border-radius: 6px; }
.btn--outline {
    background: transparent;
    border: 1px solid rgba(255,255,255,.15);
    color: rgba(255,255,255,.7);
    padding: 6px 14px; font-size: .82rem; border-radius: 6px;
    cursor: pointer; transition: var(--transition);
}
.btn--outline:hover { border-color: var(--gold); color: var(--gold); }
.btn--danger {
    background: rgba(239,68,68,.15);
    border: 1px solid rgba(239,68,68,.3);
    color: #ef4444;
    padding: 6px 14px; font-size: .82rem; border-radius: 6px;
    cursor: pointer; transition: var(--transition);
}
.btn--danger:hover { background: rgba(239,68,68,.3); }

.btn--full { width: 100%; }
.btn--lg { padding: 14px 28px; font-size: 1.05rem; }

/* ── Form row ── */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
@media (max-width: 600px) {
    .form-row { grid-template-columns: 1fr; }
    .quick-actions { grid-template-columns: 1fr 1fr; }
}

/* ── Content grid (student portal) ── */
.content-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* ── Sidebar admin variant ── */
.sidebar--admin .sidebar__header { border-bottom-color: rgba(239,68,68,.2); }
.sidebar__avatar--admin { background: linear-gradient(135deg, #ef4444, #f97316); }

/* ── Login shake animation ── */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-8px); }
    40% { transform: translateX(8px); }
    60% { transform: translateX(-6px); }
    80% { transform: translateX(6px); }
}
.shake { animation: shake 0.5s ease; }

/* ── Notif dot ── */
.notif-dot {
    position: absolute; top: 6px; right: 6px;
    width: 8px; height: 8px;
    background: #ef4444;
    border-radius: 50%;
}
.topbar__btn { position: relative; }

/* ── Attendance select in tables ── */
.att-status-select {
    background: rgba(13,27,76,.6);
    border: 1px solid rgba(255,255,255,.15);
    color: #fff;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: .85rem;
    cursor: pointer;
    transition: var(--transition);
}
.att-status-select:focus {
    border-color: var(--gold);
    outline: none;
}

/* ==========================================
   FEE MANAGEMENT — Professional Styles
   ========================================== */

/* Wide modal for fee collection */
.portal-modal__content--wide { max-width: 720px; }

/* Fee section dividers inside modal */
.fee-section-header {
    display: flex; align-items: center; gap: 10px;
    margin: 22px 0 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--gray-100);
    font-size: .78rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 1.2px;
    color: var(--navy);
}
.fee-section-header i { color: var(--gold); font-size: .9rem; }

/* Fee preview bar in modal */
.fee-preview-bar {
    background: linear-gradient(135deg, var(--navy) 0%, #1a3a8a 100%);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    margin: 16px 0;
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px;
}
.fee-preview-bar__label { color: rgba(255,255,255,.6); font-size: .8rem; margin-bottom: 3px; }
.fee-preview-bar__value { color: var(--gold); font-size: 1.4rem; font-weight: 800; }
.fee-preview-bar__info { color: rgba(255,255,255,.85); font-size: .85rem; font-weight: 500; }
.fee-preview-bar__receipt { text-align: right; }
.fee-preview-bar__receipt-label { color: rgba(255,255,255,.5); font-size: .72rem; }
.fee-preview-bar__receipt-value { color: rgba(255,255,255,.9); font-size: .9rem; font-weight: 600; }

/* Student type toggle tabs */
.fee-type-tabs { display: flex; gap: 0; margin-bottom: 18px; border-radius: var(--radius-sm); overflow: hidden; border: 2px solid var(--gray-200); }
.fee-type-tab {
    flex: 1; padding: 10px 8px; border: none; background: var(--gray-100);
    font-family: var(--font-main); font-size: .85rem; font-weight: 600;
    color: var(--gray-600); cursor: pointer; transition: var(--transition);
    display: flex; align-items: center; justify-content: center; gap: 6px;
}
.fee-type-tab.active { background: var(--navy); color: #fff; }
.fee-type-tab:hover:not(.active) { background: var(--gray-200); }

/* Fee filter bar on admin list page */
.fee-filter-bar {
    display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
    padding: 16px 20px;
    background: rgba(13,27,76,.03);
    border-bottom: 1px solid var(--gray-200);
}
.fee-filter-bar input, .fee-filter-bar select {
    padding: 9px 14px; border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm); font-family: var(--font-main);
    font-size: .85rem; color: var(--text-primary); min-width: 140px;
    transition: var(--transition);
}
.fee-filter-bar input:focus, .fee-filter-bar select:focus {
    outline: none; border-color: var(--navy);
}
.fee-filter-bar .btn--sm { padding: 9px 16px; }

/* ── Student-side Fee Receipt Cards ── */
.fee-receipt-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    padding: 20px 24px;
}
.fee-receipt-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(13,27,76,.06);
}
.fee-receipt-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(13,27,76,.13);
}
.fee-receipt-card__header {
    background: linear-gradient(135deg, #0d1b4c 0%, #1a3a8a 100%);
    padding: 18px 20px;
    display: flex; justify-content: space-between; align-items: flex-start;
}
.fee-receipt-card__receipt-no { color: rgba(255,255,255,.6); font-size: .75rem; font-weight: 500; margin-bottom: 6px; }
.fee-receipt-card__amount { color: var(--gold); font-size: 1.7rem; font-weight: 800; line-height: 1; }
.fee-receipt-card__paid-badge {
    background: #2ecc71; color: #fff; font-size: .68rem; font-weight: 700;
    padding: 4px 10px; border-radius: 20px; letter-spacing: .5px;
    display: inline-flex; align-items: center; gap: 4px;
}
.fee-receipt-card__period { color: rgba(255,255,255,.55); font-size: .75rem; margin-top: 6px; }
.fee-receipt-card__body { padding: 14px 20px; }
.fee-receipt-card__row {
    display: flex; justify-content: space-between; align-items: center;
    padding: 7px 0; border-bottom: 1px dashed var(--gray-200); font-size: .83rem;
}
.fee-receipt-card__row:last-child { border-bottom: none; }
.fee-receipt-card__lbl { color: var(--gray-600); display: flex; align-items: center; gap: 6px; }
.fee-receipt-card__val { font-weight: 600; color: var(--text-primary); }
.fee-receipt-card__footer {
    padding: 12px 20px;
    background: var(--gray-100);
    border-top: 1px solid var(--gray-200);
}

/* Fee stats strip (student side empty state) */
.fee-empty-state {
    text-align: center; padding: 60px 24px; color: var(--text-secondary);
}
.fee-empty-state i { font-size: 3.5rem; color: var(--gray-300); display: block; margin-bottom: 16px; }
.fee-empty-state h4 { font-size: 1.1rem; color: var(--navy); margin-bottom: 8px; }

/* Admin fee modal payment mode icons */
.payment-mode-options { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin-bottom: 0; }
.payment-mode-opt { display: none; }
.payment-mode-opt + label {
    display: flex; flex-direction: column; align-items: center; gap: 5px;
    padding: 10px 4px; border: 2px solid var(--gray-200); border-radius: var(--radius-sm);
    font-size: .7rem; font-weight: 600; color: var(--gray-600);
    cursor: pointer; transition: var(--transition); text-align: center;
}
.payment-mode-opt + label i { font-size: 1.1rem; }
.payment-mode-opt:checked + label { border-color: var(--navy); color: var(--navy); background: rgba(13,27,76,.05); }
.payment-mode-opt + label:hover { border-color: var(--navy); color: var(--navy); }

@media (max-width: 600px) {
    .fee-receipt-grid { grid-template-columns: 1fr; padding: 16px; }
    .fee-filter-bar { flex-direction: column; align-items: stretch; }
    .fee-filter-bar input, .fee-filter-bar select { min-width: unset; }
    .portal-modal__content--wide { max-width: 100%; }
    .payment-mode-options { grid-template-columns: repeat(3, 1fr); }
}