/* =============================================================================
   Topperscloud Classroom LMS — Custom Stylesheet
   Built on top of Bootstrap 5.3
   Brand colours: #0095FF (blue) · #FFA600 (amber) — from logo
   ============================================================================= */

/* ── Custom Properties ─────────────────────────────────────────────────────── */
:root {
    /* Brand palette — pulled from topperscloud_logo.svg */
    --tc-primary:       #0095FF;
    --tc-primary-dk:    #0077CC;
    --tc-primary-lt:    #ddeeff;
    --tc-accent:        #FFA600;
    --tc-accent-dk:     #e59200;
    --tc-accent-lt:     #fff3cd;
    --tc-success:       #10b981;
    --tc-danger:        #ef4444;
    --tc-info:          #06b6d4;

    /* Sidebar — deep navy */
    --sidebar-bg:       #0d1635;
    --sidebar-bg-dk:    #070e22;
    --sidebar-width:    260px;
    --sidebar-width-collapsed: 72px;

    /* Topnav */
    --topnav-height:    64px;
    --topnav-bg:        #ffffff;

    /* App bg */
    --app-bg:           #f0f6ff;

    /* Typography */
    --font-base:        'Nunito Sans', system-ui, sans-serif;
    --fw-600: 600;
    --fw-700: 700;
    --fw-800: 800;

    /* Misc */
    --radius-sm:        8px;
    --radius:           12px;
    --radius-lg:        18px;
    --shadow-sm:        0 2px 8px rgba(0,149,255,.07);
    --shadow-md:        0 6px 24px rgba(0,149,255,.14);
    --transition:       .22s ease;
}


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

body {
    font-family: var(--font-base);
    background: var(--app-bg);
    color: #1e293b;
    min-height: 100vh;
    overflow-x: hidden;
}

h1,h2,h3,h4,h5,h6 { font-family: var(--font-base); font-weight: var(--fw-700); }

/* ── Utilities ──────────────────────────────────────────────────────────────── */
.fw-600 { font-weight: 600 !important; }
.fw-700 { font-weight: 700 !important; }
.fw-800 { font-weight: 800 !important; }

.bg-primary-soft  { background: #ddeeff !important; }
.bg-success-soft  { background: #d1fae5 !important; }
.bg-warning-soft  { background: #fff3cd !important; }
.bg-danger-soft   { background: #fee2e2 !important; }
.bg-info-soft     { background: #cffafe !important; }

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

/* ── App Shell ──────────────────────────────────────────────────────────────── */
.lms-shell       { display: flex; flex-direction: column; min-height: 100vh; }
.lms-body-wrap   { display: flex; flex: 1; padding-top: var(--topnav-height); }

/* ── Top Navigation ─────────────────────────────────────────────────────────── */
.lms-topnav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--topnav-height);
    background: var(--topnav-bg);
    border-bottom: 1px solid #e0ecff;
    box-shadow: 0 2px 12px rgba(0,149,255,.07);
    z-index: 1030;
    padding: 0 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Logo */
.topnav-logo {
    display: flex; align-items: center; gap: .625rem;
    text-decoration: none; flex-shrink: 0;
}
.topnav-logo-img { height: 36px; width: 36px; object-fit: contain; }
.topnav-logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-name { font-size: .9375rem; font-weight: 800; color: #0d1635; }
.logo-sub  { font-size: .68rem; font-weight: 700; color: var(--tc-primary); letter-spacing: .07em; text-transform: uppercase; }

/* Date */
.topnav-date {
    align-items: center;
    font-size: .82rem; font-weight: 600; color: #64748b;
    background: #f0f6ff; border-radius: 99px;
    padding: .35rem .9rem;
    white-space: nowrap;
}

/* Right cluster */
.topnav-right {
    margin-left: auto;
    display: flex; align-items: center; gap: .5rem;
}

/* Icon buttons */
.topnav-icon-btn {
    background: #f0f6ff; border: none; cursor: pointer;
    border-radius: var(--radius-sm);
    width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center;
    color: #4b5563; font-size: 1.125rem;
    transition: var(--transition); position: relative;
}
.topnav-icon-btn:hover { background: var(--tc-primary-lt); color: var(--tc-primary); }

/* Badge dot */
.topnav-badge-dot {
    position: absolute; top: 7px; right: 8px;
    width: 8px; height: 8px;
    background: var(--tc-danger);
    border-radius: 50%; border: 2px solid #fff;
}

/* User button */
.topnav-user-btn {
    display: flex; align-items: center; gap: .5rem;
    background: #f0f6ff; border: 1.5px solid #ddeeff;
    border-radius: 99px; padding: .25rem .625rem .25rem .25rem;
    cursor: pointer; transition: var(--transition); color: #1e293b;
}
.topnav-user-btn:hover { border-color: var(--tc-primary); background: #ddeeff; }

/* Topnav avatar */
.topnav-avatar {
    width: 34px; height: 34px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 800; font-size: .85rem; flex-shrink: 0;
}
.topnav-avatar-lg { width: 42px; height: 42px; font-size: 1.05rem; }

.topnav-user-info  { display: flex; flex-direction: column; line-height: 1.15; }
.topnav-user-name  { font-size: .8125rem; font-weight: 700; color: #1e293b; }
.topnav-user-role  { font-size: .7rem; color: #94a3b8; }
.topnav-chevron    { font-size: .7rem; color: #94a3b8; }

/* User dropdown */
.topnav-user-dd { min-width: 220px; border-radius: var(--radius) !important; border: 1px solid #e0ecff !important; }
.topnav-user-dd .dropdown-item { font-size: .875rem; font-weight: 600; border-radius: var(--radius-sm); margin: 2px 6px; width: calc(100% - 12px); }
.topnav-user-dd .dropdown-item:hover { background: #f0f6ff; }

/* Hamburger (mobile only) */
.topnav-hamburger {
    display: none; background: #f0f6ff; border: none;
    border-radius: var(--radius-sm); width: 40px; height: 40px;
    align-items: center; justify-content: center;
    font-size: 1.4rem; color: #0d1635; cursor: pointer;
    transition: var(--transition);
}
@media (max-width: 991.98px) {
    .topnav-hamburger { display: flex; }
}
.topnav-hamburger:hover { background: var(--tc-primary-lt); color: var(--tc-primary); }

/* Legacy compat */
.brand-icon {
    width: 38px; height: 38px;
    background: linear-gradient(135deg, #0095FF 0%, #33aaff 100%);
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 1.15rem; flex-shrink: 0;
}
.brand-name { font-weight: 800; font-size: .9375rem; color: #0d1635; line-height: 1; }
.brand-sub  { font-size: .7rem; color: var(--tc-primary); font-weight: 600; letter-spacing: .06em; text-transform: uppercase; }

/* Notification dropdown */
.notification-dropdown {
    width: 320px;
    border: 1px solid #e0ecff !important;
    border-radius: var(--radius) !important;
    box-shadow: var(--shadow-md) !important;
    overflow: hidden;
}
.notif-header {
    background: #f0f6ff;
    font-size: .8125rem;
    font-weight: 700;
    border-bottom: 1px solid #e0ecff;
    padding: .625rem 1rem;
}
.dropdown-header {
    background: #f0f6ff;
    font-size: .8125rem;
    font-weight: 700;
    border-bottom: 1px solid #e0ecff;
}
.notif-list { max-height: 280px; overflow-y: auto; }
.notif-item {
    display: flex; align-items: flex-start; gap: .75rem;
    padding: .75rem 1rem;
    border-bottom: 1px solid #f1f5fb;
    transition: background var(--transition);
}
.notif-item:last-child { border-bottom: none; }
.notif-item:hover      { background: #f8f9ff; text-decoration: none !important; }
.notif-item.unread     { background: #f5f6ff; }
.notif-icon { width: 36px; height: 36px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: .9rem; flex-shrink: 0; }
.notif-title { font-size: .8375rem; font-weight: 600; color: #1e293b; }
.notif-time  { font-size: .75rem; color: #94a3b8; margin-top: 1px; }

/* User menu button */
.user-menu-btn {
    background: #f4f5ff;
    border: 1.5px solid #e0e7ff;
    border-radius: 99px;
    transition: var(--transition);
    color: #1e293b;
}
.user-menu-btn:hover { border-color: var(--tc-primary); background: #e0e7ff; }

/* user-avatar: colour controlled via inline style (dynamic per letter) */
.user-avatar {
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--tc-primary);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: .875rem; flex-shrink: 0;
}
.user-avatar-sm { width: 30px; height: 30px; font-size: .75rem; }
.user-menu-name { font-size: .8125rem; font-weight: 700; line-height: 1.2; }
.user-menu-role { font-size: .7rem; color: #94a3b8; line-height: 1; }

/* ── Sidebar ─────────────────────────────────────────────────────────────────── */
.lms-sidebar {
    position: fixed;
    top: var(--topnav-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--topnav-height));
    background: var(--sidebar-bg);
    padding: 1rem .75rem 1.5rem;
    display: flex;
    flex-direction: column;
    z-index: 1025;
    transition: transform var(--transition), width var(--transition);
    overflow-y: auto;
    overflow-x: hidden;
}

/* Sidebar logo */
.sidebar-logo {
    display: flex; align-items: center; gap: .625rem;
    padding: .5rem .375rem .875rem;
    border-bottom: 1px solid rgba(255,255,255,.07);
    margin-bottom: .875rem; flex-shrink: 0;
}
.sidebar-logo-img  { height: 32px; width: 32px; object-fit: contain; flex-shrink: 0; }
.sidebar-logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.sidebar-logo-name { font-size: .875rem; font-weight: 800; color: #fff; }
.sidebar-logo-sub  { font-size: .65rem; font-weight: 700; color: #FFA600; letter-spacing: .07em; text-transform: uppercase; }

/* 2-level submenu */
.sidebar-link-parent { position: relative; }
.sidebar-chevron {
    font-size: .7rem; color: rgba(255,255,255,.4);
    transition: transform var(--transition); flex-shrink: 0;
}
.sidebar-link-parent[aria-expanded="true"] .sidebar-chevron { transform: rotate(-180deg); }

.sidebar-submenu {
    padding: .25rem 0 .25rem .5rem;
    margin-left: .875rem;
    border-left: 2px solid rgba(255,255,255,.1);
}
.sidebar-sublink {
    display: flex; align-items: center; gap: .5rem;
    padding: .45rem .75rem;
    border-radius: var(--radius-sm);
    color: rgba(199,210,254,.7);
    font-size: .8rem; font-weight: 600;
    text-decoration: none;
    transition: color var(--transition), background var(--transition);
    white-space: nowrap;
}
.sidebar-sublink:hover { color: #fff; background: rgba(255,255,255,.07); text-decoration: none; }
.sidebar-sublink.active { color: #FFA600; font-weight: 700; }
.sidebar-subdot {
    width: 5px; height: 5px; border-radius: 50%;
    background: rgba(255,255,255,.3); flex-shrink: 0;
}
.sidebar-sublink.active .sidebar-subdot { background: #FFA600; }
.sidebar-icon-sm {
    width: 16px; height: 16px; font-size: .78rem;
    color: rgba(199,210,254,.55); flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
}
.sidebar-sublink.active .sidebar-icon-sm { color: #FFA600; }

/* Sidebar bottom avatar */
.sidebar-avatar {
    width: 32px; height: 32px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 800; font-size: .8rem;
    flex-shrink: 0;
}

/* Collapsed state (desktop toggle) */
.sidebar-collapsed .lms-sidebar { width: var(--sidebar-width-collapsed); }
.sidebar-collapsed .sidebar-label,
.sidebar-collapsed .sidebar-section-label,
.sidebar-collapsed .sidebar-badge,
.sidebar-collapsed .sidebar-user-card .sidebar-user-name,
.sidebar-collapsed .sidebar-user-card .sidebar-user-role,
.sidebar-collapsed .sidebar-logo-text,
.sidebar-collapsed .sidebar-submenu,
.sidebar-collapsed .sidebar-chevron { display: none !important; }
.sidebar-collapsed .sidebar-link { justify-content: center; padding: .75rem; }
.sidebar-collapsed .lms-main-content { margin-left: var(--sidebar-width-collapsed); }
.sidebar-collapsed .lms-footer       { margin-left: var(--sidebar-width-collapsed); }
.sidebar-collapsed .sidebar-logo {
    justify-content: center; padding: .5rem .375rem .875rem;
}

/* Section labels */
.sidebar-section-label {
    font-size: .65rem; font-weight: 800; letter-spacing: .1em;
    color: rgba(165,180,252,.6);
    padding: .5rem .75rem .25rem; margin-top: .25rem;
}

/* Nav links */
.sidebar-nav { display: flex; flex-direction: column; gap: 2px; }

.sidebar-link {
    display: flex; align-items: center; gap: .75rem;
    padding: .6rem .875rem;
    border-radius: var(--radius-sm);
    color: rgba(199,210,254,.85);
    font-size: .875rem; font-weight: 600;
    text-decoration: none;
    transition: background var(--transition), color var(--transition);
    white-space: nowrap;
}
.sidebar-link:hover { background: rgba(255,255,255,.07); color: #fff; text-decoration: none; }
.sidebar-link.active {
    background: var(--tc-primary) !important; color: #fff !important;
    box-shadow: 0 4px 14px rgba(0,149,255,.4);
}
.sidebar-item-group.active-group > .sidebar-link-parent {
    background: rgba(0,149,255,.15); color: #fff;
}

.sidebar-icon {
    width: 28px; height: 28px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 7px; font-size: .9rem; flex-shrink: 0;
    background: rgba(255,255,255,.07);
    transition: background var(--transition);
}
.sidebar-link.active .sidebar-icon { background: rgba(255,255,255,.18); }
.sidebar-link:hover .sidebar-icon  { background: rgba(255,255,255,.1); }

.text-danger-soft { color: #fca5a5 !important; }
.text-danger-soft:hover { color: #f87171 !important; background: rgba(239,68,68,.15) !important; }

/* Notification badge */
.sidebar-badge {
    margin-left: auto;
    background: var(--tc-accent); color: #fff;
    font-size: .65rem; font-weight: 800;
    padding: 2px 7px; border-radius: 99px; line-height: 1.5;
}

/* Bottom user card */
.sidebar-user-card {
    background: rgba(255,255,255,.07);
    border-radius: var(--radius);
    padding: .875rem; margin-top: auto;
    border: 1px solid rgba(255,255,255,.08);
}
.sidebar-user-name { font-size: .8125rem; font-weight: 700; color: #fff; }
.sidebar-user-role { font-size: .7rem; color: #a5b4fc; }
.sidebar-progress  { height: 6px; border-radius: 99px; background: rgba(255,255,255,.15); }

/* Overlay on mobile */
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(13,22,53,.55); z-index: 1024; backdrop-filter: blur(2px); }
.sidebar-open .sidebar-overlay { display: block; }

/* ── Main content ────────────────────────────────────────────────────────────── */
.lms-main-content {
    margin-left: var(--sidebar-width);
    flex: 1; min-width: 0;
    padding: 1.75rem 2rem;
    transition: margin-left var(--transition);
}

/* ── Footer ─────────────────────────────────────────────────────────────────── */
.lms-footer {
    background: #fff;
    border-top: 1px solid #e9eaf3;
    padding: 1rem 2rem;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition);
}

/* ── Page header ─────────────────────────────────────────────────────────────── */
.page-header { margin-bottom: 1.75rem; }
.page-header h1 { font-size: 1.625rem; font-weight: 800; color: #0d1635; margin-bottom: .25rem; }
.page-header p  { color: #64748b; font-size: .9rem; margin: 0; }

/* ── Greeting banner ─────────────────────────────────────────────────────────── */
.greeting-banner {
    background: linear-gradient(135deg, #0077CC 0%, #0095FF 55%, #33aaff 100%);
    border-radius: var(--radius-lg);
    padding: 1.75rem 2rem;
    color: #fff;
    position: relative;
    overflow: hidden;
    margin-bottom: 1.75rem;
}
.greeting-banner::after {
    content: '\1F393';
    position: absolute; right: 2rem; top: 50%; transform: translateY(-50%);
    font-size: 5rem; opacity: .2; pointer-events: none;
}
.greeting-banner h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: .25rem; }
.greeting-banner p  { font-size: .9rem; opacity: .85; margin: 0; }

/* ── Stat cards ─────────────────────────────────────────────────────────────── */
.stat-card {
    background: #fff; border-radius: var(--radius);
    padding: 1.375rem 1.5rem;
    border: 1px solid #e9eaf3;
    box-shadow: var(--shadow-sm);
    display: flex; align-items: center; gap: 1rem;
    transition: box-shadow var(--transition), transform var(--transition);
}
.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.stat-icon-wrap { width: 52px; height: 52px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.375rem; flex-shrink: 0; }
.stat-value  { font-size: 1.75rem; font-weight: 800; line-height: 1; color: #0d1635; }
.stat-label  { font-size: .8125rem; color: #64748b; margin-top: 2px; font-weight: 600; }
.stat-change { font-size: .75rem; font-weight: 700; margin-top: 4px; }
.stat-change.up { color: var(--tc-success); } .stat-change.down { color: var(--tc-danger); }

/* Gradient stat cards — brand colours */
.stat-card.grad-purple { background: linear-gradient(135deg,#0095FF,#33aaff); border: none; }
.stat-card.grad-amber  { background: linear-gradient(135deg,#FFA600,#ffC133); border: none; }
.stat-card.grad-green  { background: linear-gradient(135deg,#10b981,#34d399); border: none; }
.stat-card.grad-cyan   { background: linear-gradient(135deg,#06b6d4,#22d3ee); border: none; }
.stat-card.grad-purple .stat-value, .stat-card.grad-amber .stat-value,
.stat-card.grad-green  .stat-value, .stat-card.grad-cyan  .stat-value { color: #fff; }
.stat-card.grad-purple .stat-label, .stat-card.grad-amber .stat-label,
.stat-card.grad-green  .stat-label, .stat-card.grad-cyan  .stat-label { color: rgba(255,255,255,.8); }

/* ── LMS cards ───────────────────────────────────────────────────────────────── */
.lms-card { background: #fff; border-radius: var(--radius); border: 1px solid #e9eaf3; box-shadow: var(--shadow-sm); overflow: hidden; }
.lms-card-header { padding: 1.125rem 1.5rem; border-bottom: 1px solid #f1f5fb; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.lms-card-title  { font-size: 1rem; font-weight: 800; color: #0d1635; margin: 0; }
.lms-card-body   { padding: 1.25rem 1.5rem; }

/* Override Bootstrap .card to match theme */
.card { border-radius: var(--radius) !important; border-color: #e9eaf3 !important; box-shadow: var(--shadow-sm) !important; }
.card-title { font-weight: 800; color: #0d1635; }
/* ── Quick-access cards (index.php dashboard) ───────────────────────────── */
.quick-card {
    background: #fff; border-radius: var(--radius); border: 1px solid #e0ecff;
    padding: 1.25rem 1rem; text-align: center;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition), transform var(--transition);
    display: block; height: 100%;
}
.quick-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.quick-card-icon {
    width: 52px; height: 52px; border-radius: var(--radius-sm);
    margin: 0 auto .75rem;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.375rem;
}
.quick-card-label { font-size: .875rem; font-weight: 800; color: #0d1635; margin-bottom: .2rem; }
.quick-card-desc  { font-size: .75rem; color: #94a3b8; }
/* ── Course cards ────────────────────────────────────────────────────────────── */
.course-card {
    background: #fff; border-radius: var(--radius);
    border: 1px solid #e9eaf3; box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition);
    height: 100%;
}
.course-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.course-thumb { height: 140px; display: flex; align-items: center; justify-content: center; font-size: 3rem; }
.course-body  { padding: 1rem 1.125rem 1.25rem; }
.course-subject { font-size: .7rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; margin-bottom: .4rem; }
.course-title   { font-size: .9375rem; font-weight: 700; color: #0d1635; margin-bottom: .5rem; }
.course-meta    { display: flex; align-items: center; gap: .75rem; margin-top: .75rem; }
.course-meta span { font-size: .75rem; color: #64748b; display: flex; align-items: center; gap: .25rem; }
.course-progress-bar  { height: 6px; border-radius: 99px; background: #e9eaf3; margin-top: .875rem; overflow: hidden; }
.course-progress-fill { height: 100%; border-radius: 99px; background: linear-gradient(90deg,#0095FF,#33aaff); }

/* ── Activity list ───────────────────────────────────────────────────────────── */
.activity-item { display: flex; align-items: center; gap: .875rem; padding: .75rem 0; border-bottom: 1px solid #f1f5fb; }
.activity-item:last-child { border-bottom: none; }
.activity-icon  { width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: .95rem; flex-shrink: 0; }
.activity-title { font-size: .875rem; font-weight: 600; color: #1e293b; }
.activity-sub   { font-size: .75rem; color: #94a3b8; }
.activity-time  { font-size: .75rem; color: #94a3b8; margin-left: auto; white-space: nowrap; }

/* ── Auth ────────────────────────────────────────────────────────────────────── */
.auth-page {
    min-height: 100vh;
    display: flex;
    background: linear-gradient(135deg, #e0e7ff 0%, #dbeafe 100%);
}

.auth-left {
    flex: 1; display: none;
    background: linear-gradient(160deg, #0d1635 0%, #312e81 60%, #4338ca 100%);
    color: #fff; padding: 3rem;
    flex-direction: column; justify-content: center;
    position: relative; overflow: hidden;
}
@media (min-width: 992px) { .auth-left { display: flex; } }

.auth-left-blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .3; }
.blob-1 { width:350px; height:350px; background:#6366f1; top:-80px; right:-80px; }
.blob-2 { width:250px; height:250px; background:#a78bfa; bottom:-40px; left:-40px; }
.auth-left-content { position: relative; z-index: 1; }
.auth-left h2 { font-size: 2rem; font-weight: 800; margin-bottom: .75rem; }
.auth-left p  { font-size: 1rem; opacity: .8; max-width: 360px; }

.auth-feature { display: flex; align-items: center; gap: .875rem; margin-top: 1.25rem; }
.auth-feature-icon { width: 44px; height: 44px; background: rgba(255,255,255,.1); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.125rem; flex-shrink: 0; }
.auth-feature-text strong { display: block; font-size: .9rem; }
.auth-feature-text span   { font-size: .8rem; opacity: .7; }

.auth-right {
    width: 100%; max-width: 480px;
    padding: 3rem 2.5rem;
    display: flex; flex-direction: column; justify-content: center;
    background: #fff;
}

.auth-logo-wrap { display: flex; align-items: center; gap: .625rem; margin-bottom: 2.25rem; }
.auth-title     { font-size: 1.625rem; font-weight: 800; color: #0d1635; margin-bottom: .25rem; }
.auth-subtitle  { font-size: .9rem; color: #64748b; margin-bottom: 2rem; }

.auth-divider { display: flex; align-items: center; gap: .75rem; margin: 1.25rem 0; color: #94a3b8; font-size: .8125rem; }
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: #e9eaf3; }

/* ── Form overrides ──────────────────────────────────────────────────────────── */
.form-control, .form-select {
    font-family: var(--font-base);
    border-radius: var(--radius-sm);
    border-color: #e2e8f0;
    font-size: .9rem;
    padding: .6rem .875rem;
}
.form-control:focus, .form-select:focus {
    border-color: var(--tc-primary);
    box-shadow: 0 0 0 3px rgba(0,149,255,.18);
}
.form-label { font-size: .8375rem; font-weight: 700; color: #374151; margin-bottom: .35rem; }

.input-icon-wrap { position: relative; }
.input-icon-wrap .bi { position: absolute; left: .875rem; top: 50%; transform: translateY(-50%); color: #94a3b8; pointer-events: none; font-size: 1rem; }
.input-icon-wrap .form-control { padding-left: 2.5rem; }

/* ── Buttons ─────────────────────────────────────────────────────────────────── */
.btn { font-family: var(--font-base); font-weight: 700; border-radius: var(--radius-sm); transition: all var(--transition); }
.btn-primary { background: var(--tc-primary); border-color: var(--tc-primary); }
.btn-primary:hover { background: var(--tc-primary-dk); border-color: var(--tc-primary-dk); }
.btn-accent { background: var(--tc-accent); border-color: var(--tc-accent); color: #fff; }
.btn-accent:hover { background: var(--tc-accent-dk); border-color: var(--tc-accent-dk); color: #fff; }

/* ── Landing page ────────────────────────────────────────────────────────────── */
.landing-hero {
    background: linear-gradient(130deg, #0d1635 0%, #0a3a6b 50%, #0095FF 100%);
    padding: 5rem 0 4rem; color: #fff; text-align: center;
    position: relative; overflow: hidden;
}
.landing-hero::before {
    content: '';
    position: absolute; inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.landing-hero .container { position: relative; z-index: 1; }
.landing-hero h1 { font-size: 3rem; font-weight: 900; margin-bottom: 1rem; }
.landing-hero p  { font-size: 1.15rem; opacity: .85; max-width: 520px; margin: 0 auto 2rem; }

.feature-card {
    background: #fff; border-radius: var(--radius);
    padding: 2rem 1.5rem; text-align: center;
    box-shadow: var(--shadow-sm); border: 1px solid #e9eaf3;
    transition: box-shadow var(--transition), transform var(--transition);
    height: 100%;
}
.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.feature-icon { width: 64px; height: 64px; border-radius: var(--radius-sm); margin: 0 auto 1.125rem; display: flex; align-items: center; justify-content: center; font-size: 1.75rem; }
.feature-card h4 { font-size: 1rem; font-weight: 800; color: #0d1635; margin-bottom: .5rem; }
.feature-card p  { font-size: .875rem; color: #64748b; margin: 0; }

/* ── Empty states & alerts ───────────────────────────────────────────────────── */
.empty-state { text-align: center; padding: 2.5rem 1rem; color: #94a3b8; }
.empty-state .bi { font-size: 2.5rem; margin-bottom: .75rem; display: block; }
.empty-state p   { font-size: .875rem; margin: 0; }

.alert { border-radius: var(--radius-sm); font-size: .875rem; }
.alert-danger  { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #6ee7b7; }
.alert-info    { background: #cffafe; color: #155e75; border: 1px solid #67e8f9; }

/* ── Scrollbar ───────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #b3d9ff; border-radius: 99px; }
.lms-sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,.15); }

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 991.98px) {
    .lms-sidebar { transform: translateX(calc(-1 * var(--sidebar-width))); box-shadow: none; }
    .sidebar-open .lms-sidebar { transform: translateX(0); box-shadow: 0 0 40px rgba(0,0,0,.35); }
    .lms-main-content { margin-left: 0 !important; }
    .lms-footer       { margin-left: 0 !important; }
    .auth-right       { max-width: 100%; padding: 2rem 1.5rem; }
    /* topnav adjustments */
    .topnav-date { display: none !important; }
}
@media (max-width: 575.98px) {
    .lms-main-content { padding: 1.25rem 1rem; }
    .greeting-banner  { padding: 1.25rem 1.25rem; }
    .greeting-banner::after { display: none; }
    .landing-hero h1  { font-size: 2rem; }
}