:root {
    --primary: #4C44CF;
    --primary-dark: #3b34b0;
    --primary-soft: rgba(76, 68, 207, 0.12);
    --sidebar: #2A2660;
    --sidebar-2: #1f1b4d;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --bg: #F8F9FB;
    --card: #ffffff;
    --text: #1f2937;
    --muted: #6b7280;
    --border: #e5e7eb;
    --radius: 16px;
    --radius-sm: 12px;
    --shadow: 0 8px 24px rgba(31, 27, 77, 0.08);
    --sidebar-width: 260px;
    --bottom-nav-h: 84px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Inter, system-ui, -apple-system, sans-serif;
    -webkit-font-smoothing: antialiased;
}

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

/* Buttons */
.btn-primary {
    --bs-btn-bg: var(--primary);
    --bs-btn-border-color: var(--primary);
    --bs-btn-hover-bg: var(--primary-dark);
    --bs-btn-hover-border-color: var(--primary-dark);
    --bs-btn-active-bg: var(--primary-dark);
    --bs-btn-active-border-color: var(--primary-dark);
}
.btn-outline-primary {
    --bs-btn-color: var(--primary);
    --bs-btn-border-color: var(--primary);
    --bs-btn-hover-bg: var(--primary);
    --bs-btn-hover-border-color: var(--primary);
}
.btn-pill { border-radius: 999px; font-weight: 600; }
.btn-brand {
    background: linear-gradient(135deg, #5b54e6, #4C44CF);
    border: 0;
    color: #fff;
    border-radius: 999px;
    font-weight: 700;
    padding: .9rem 1.25rem;
    box-shadow: 0 10px 24px rgba(76, 68, 207, .35);
}
.btn-brand:hover { color: #fff; filter: brightness(.96); }

/* Cards */
.sa-card {
    background: var(--card);
    border: 0;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.stat-card {
    background: var(--card);
    border: 0;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.stat-card .icon-box {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    font-size: 1.15rem;
}
.icon-purple { background: #eeeaff; color: var(--primary); }
.icon-green { background: #e8f9ef; color: var(--success); }
.icon-blue { background: #e8f1ff; color: var(--info); }
.icon-orange { background: #fff4e7; color: var(--warning); }

.badge-pill {
    border-radius: 999px;
    font-weight: 600;
    padding: .35rem .7rem;
    font-size: .75rem;
}
.badge-active { background: #e8f9ef; color: #15803d; }
.badge-upcoming { background: #e8f1ff; color: #1d4ed8; }
.badge-closed { background: #f3f4f6; color: #4b5563; }
.badge-present { background: #e8f9ef; color: #15803d; }
.badge-absent { background: #fee2e2; color: #b91c1c; }

.table thead th {
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--muted);
    font-weight: 600;
    border-bottom-color: var(--border);
}
.table > :not(caption) > * > * { padding: .9rem .75rem; }

/* =========================
   LECTURER DESKTOP SHELL
   ========================= */
.lecturer-shell { min-height: 100vh; display: flex; }

.lecturer-sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--sidebar) 0%, var(--sidebar-2) 100%);
    color: #fff;
    min-height: 100vh;
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    padding: 1.25rem 1rem;
}
.lecturer-sidebar .brand {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .5rem .75rem 1.5rem;
    color: #fff;
    text-decoration: none;
}
.lecturer-sidebar .brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(255,255,255,.15);
    display: grid;
    place-items: center;
}
.lecturer-sidebar .nav-link {
    color: rgba(255,255,255,.78);
    border-radius: 12px;
    padding: .75rem .9rem;
    display: flex;
    align-items: center;
    gap: .7rem;
    font-weight: 500;
    margin-bottom: .2rem;
}
.lecturer-sidebar .nav-link:hover,
.lecturer-sidebar .nav-link.active {
    background: rgba(255,255,255,.12);
    color: #fff;
}
.lecturer-sidebar .sidebar-footer {
    margin-top: auto;
    padding: .9rem;
    border-radius: 14px;
    background: rgba(255,255,255,.08);
}

.lecturer-main { flex: 1; min-width: 0; }
.lecturer-topbar {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.lecturer-content { padding: 1.5rem; }

.quick-action {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: .65rem;
    padding: 1.1rem;
    border-radius: var(--radius-sm);
    background: #fff;
    border: 1px solid var(--border);
    color: var(--text);
    transition: .15s ease;
    height: 100%;
}
.quick-action:hover {
    border-color: var(--primary);
    color: var(--text);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}
.quick-action .qa-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: var(--primary-soft);
    color: var(--primary);
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    background: #EDE9FE;
    color: #6C5CE7;
    display: inline-grid;
    place-items: center;
    font-weight: 700;
}
.avatar-sm { width: 36px; height: 36px; font-size: .8rem; }
.avatar-lg { width: 56px; height: 56px; font-size: 1.15rem; }

/* =========================
   STUDENT MOBILE SHELL
   ========================= */
.student-shell {
    min-height: 100vh;
    max-width: 480px;
    margin: 0 auto;
    background: var(--bg);
    position: relative;
    padding-bottom: calc(var(--bottom-nav-h) + 12px);
    box-shadow: 0 0 40px rgba(31, 27, 77, 0.06);
}

.student-content { padding: 1.25rem 1.15rem; }

.bottom-nav {
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    width: 100%;
    max-width: 480px;
    height: var(--bottom-nav-h);
    background: #fff;
    border-top: 1px solid var(--border);
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    z-index: 100;
    padding: .25rem .35rem .5rem;
    align-items: end;
}
.bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .15rem;
    color: #9ca3af;
    font-size: .65rem;
    font-weight: 600;
    text-decoration: none;
    padding-bottom: .2rem;
}
.bottom-nav a i { font-size: 1.2rem; }
.bottom-nav a.active { color: #6C5CE7; }
.bottom-nav .nav-scan {
    position: relative;
    top: -14px;
}
.bottom-nav .nav-scan-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(145deg, #7B74EA, #6C5CE7);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 1.35rem;
    box-shadow: 0 8px 22px rgba(108, 92, 231, .45);
    margin-bottom: .15rem;
}
.bottom-nav .nav-scan.active,
.bottom-nav .nav-scan.active .nav-scan-btn { color: #fff; }
.bottom-nav-dark {
    background: #14121f;
    border-top-color: rgba(255,255,255,.08);
}
.bottom-nav-dark a { color: rgba(255,255,255,.45); }
.bottom-nav-dark a.active { color: #fff; }
.bottom-nav-dark .nav-scan-btn {
    box-shadow: 0 0 0 6px rgba(108, 92, 231, .25), 0 8px 22px rgba(108, 92, 231, .55);
}

/* Student dashboard — matches design mockup */
.dash-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.15rem;
}
.dash-page-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: #111827;
    margin: 0;
    letter-spacing: -.02em;
}
.avatar-md {
    width: 44px;
    height: 44px;
    font-size: .95rem;
}

.dash-profile-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 8px 24px rgba(31, 27, 77, .06);
    padding: 1rem 1.1rem;
    margin-bottom: 1rem;
}
.dash-profile-text { min-width: 0; }
.dash-hello {
    font-size: 1.15rem;
    font-weight: 800;
    color: #111827;
    margin-bottom: .15rem;
}
.dash-meta {
    color: #9ca3af;
    font-size: .88rem;
    line-height: 1.35;
}

.dash-attendance-card {
    background: #fff;
    border-radius: 22px;
    box-shadow: 0 8px 24px rgba(31, 27, 77, .06);
    padding: 1.25rem 1.1rem 1.4rem;
    text-align: center;
    margin-bottom: 1.35rem;
}
.dash-attendance-title {
    font-weight: 800;
    font-size: 1.05rem;
    color: #111827;
    text-align: left;
    margin-bottom: .85rem;
}
.dash-ring {
    width: 148px;
    height: 148px;
    margin: 0 auto .65rem;
    position: relative;
}
.dash-ring-value {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    font-size: 1.75rem;
    font-weight: 800;
    color: #111827;
}
.dash-standing {
    color: #9ca3af;
    font-size: .95rem;
    font-weight: 500;
}

.dash-section-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: #111827;
    margin: 0 0 .85rem;
}

.dash-action {
    display: flex;
    align-items: center;
    gap: .9rem;
    background: #F3F4F6;
    border-radius: 18px;
    padding: 1rem 1.05rem;
    color: #111827;
    text-decoration: none;
    margin-bottom: .75rem;
}
.dash-action:hover { color: #111827; background: #eceef2; }
.dash-action-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: #EDE9FE;
    color: #6C5CE7;
    display: grid;
    place-items: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}
.dash-action-copy { min-width: 0; flex: 1; }
.dash-action-title { font-weight: 700; font-size: 1rem; }
.dash-action-sub { color: #9ca3af; font-size: .82rem; margin-top: .1rem; }
.dash-action-chev { color: #c4c7d4; font-size: 1.1rem; }

.greeting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}
.greeting-row h1 {
    font-size: 1.45rem;
    font-weight: 800;
    margin: 0;
}
.greeting-meta { color: var(--muted); font-size: .85rem; margin-top: .15rem; }

.attendance-ring-card {
    background: #fff;
    border-radius: 20px;
    box-shadow: var(--shadow);
    padding: 1.35rem;
    display: flex;
    align-items: center;
    gap: 1.1rem;
    margin-bottom: 1.25rem;
}
.ring-wrap {
    width: 96px;
    height: 96px;
    position: relative;
    flex-shrink: 0;
}
.ring-wrap svg { transform: rotate(-90deg); }
.ring-center {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--primary);
}

.action-tile {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #fff;
    border-radius: 18px;
    padding: 1.1rem 1.15rem;
    box-shadow: var(--shadow);
    color: var(--text);
    margin-bottom: .9rem;
}
.action-tile:hover { color: var(--text); }
.action-tile .tile-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    font-size: 1.4rem;
    color: #fff;
}
.tile-scan { background: linear-gradient(135deg, #6a63ef, #4C44CF); }
.tile-history { background: linear-gradient(135deg, #6366f1, #4338ca); }
.action-tile .chev { margin-left: auto; color: #c4c7d4; }

.history-item {
    background: #fff;
    border-radius: 16px;
    padding: 1rem 1.1rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: .75rem;
    gap: .75rem;
}
.hist-date { font-size: .92rem; }
.hist-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.1rem;
}
.hist-page-title {
    font-size: 1.15rem;
    font-weight: 800;
    margin: 0;
    color: #111827;
}
.hist-icon-btn {
    width: 40px;
    height: 40px;
    border: 0;
    background: transparent;
    color: #111827;
    font-size: 1.2rem;
    display: inline-grid;
    place-items: center;
    text-decoration: none;
}
.hist-select-wrap { position: relative; }
.hist-select {
    border-radius: 14px !important;
    padding: .85rem 1rem !important;
    border: 1.5px solid #e5e7eb !important;
    font-weight: 600;
    background: #fff;
}
.mini-stat {
    background: #fff;
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: .9rem .5rem;
    text-align: center;
}
.mini-stat .val { font-weight: 800; font-size: 1.15rem; }
.mini-stat .val-purple { color: #6C5CE7; }
.mini-stat .val-green { color: #22c55e; }
.mini-stat .lbl { color: var(--muted); font-size: .7rem; margin-top: .15rem; }

/* Scan screen */
.scan-screen {
    background: #0b0a1a;
    color: #fff;
    min-height: 100vh;
    max-width: 480px;
    margin: 0 auto;
    position: relative;
    padding: 1rem 1rem calc(var(--bottom-nav-h) + 1.25rem);
}
.scan-topbar {
    display: grid;
    grid-template-columns: 40px 1fr 40px;
    align-items: center;
    margin-bottom: 1rem;
}
.scan-title {
    margin: 0;
    text-align: center;
    font-size: 1.1rem;
    font-weight: 700;
}
.scan-icon-btn {
    width: 40px;
    height: 40px;
    border: 0;
    background: transparent;
    color: #fff;
    font-size: 1.25rem;
    display: inline-grid;
    place-items: center;
    text-decoration: none;
}
.scan-hint {
    text-align: center;
    color: rgba(255,255,255,.65);
    font-size: .9rem;
    padding: 0 1.25rem;
    margin-bottom: 1.25rem;
    line-height: 1.45;
}
.scan-status {
    text-align: center;
    color: rgba(255,255,255,.85);
    font-size: .9rem;
    margin: 1rem 0 .5rem;
}
.scan-frame-wrap {
    position: relative;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    aspect-ratio: 1;
    border-radius: 28px;
    overflow: hidden;
    background: #111;
}
.scan-corners::before,
.scan-corners::after,
.scan-corners span::before,
.scan-corners span::after {
    content: "";
    position: absolute;
    width: 36px;
    height: 36px;
    border: 4px solid #8B85F0;
    z-index: 2;
    filter: drop-shadow(0 0 6px rgba(139, 133, 240, .8));
}
.scan-corners::before { top: 14px; left: 14px; border-right: 0; border-bottom: 0; border-radius: 10px 0 0 0; }
.scan-corners::after { top: 14px; right: 14px; border-left: 0; border-bottom: 0; border-radius: 0 10px 0 0; }
.scan-corners span::before { bottom: 14px; left: 14px; border-right: 0; border-top: 0; border-radius: 0 0 0 10px; }
.scan-corners span::after { bottom: 14px; right: 14px; border-left: 0; border-top: 0; border-radius: 0 0 10px 0; }
#reader { width: 100% !important; }
#reader video { border-radius: 28px; object-fit: cover; }
#reader img { display: none !important; }

/* Success */
.success-screen {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    background: #fff;
    padding: 1rem 1.35rem 2rem;
    text-align: center;
}
.success-topbar {
    display: grid;
    grid-template-columns: 40px 1fr 40px;
    align-items: center;
    margin-bottom: 1.5rem;
}
.success-page-title {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 800;
    color: #111827;
}
.success-back, .success-top-spacer {
    width: 40px;
    height: 40px;
    display: inline-grid;
    place-items: center;
    color: #111827;
    font-size: 1.25rem;
    text-decoration: none;
}
.success-check-wrap {
    position: relative;
    width: 140px;
    height: 140px;
    margin: .5rem auto 1.25rem;
}
.success-check {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    background: #22c55e;
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 2.75rem;
    margin: 22px auto 0;
    box-shadow: 0 12px 28px rgba(34, 197, 94, .35);
}
.confetti {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.confetti.c1 { background: #6C5CE7; top: 10px; left: 24px; }
.confetti.c2 { background: #f59e0b; top: 6px; right: 28px; width: 6px; height: 6px; }
.confetti.c3 { background: #22c55e; top: 36px; right: 8px; }
.confetti.c4 { background: #6C5CE7; bottom: 28px; left: 12px; width: 6px; height: 6px; }
.confetti.c5 { background: #f59e0b; bottom: 18px; right: 18px; }
.confetti.c6 { background: #22c55e; top: 48px; left: 6px; width: 5px; height: 5px; }
.success-headline {
    font-size: 1.45rem;
    font-weight: 800;
    color: #111827;
    margin: 0 0 .4rem;
}
.success-sub {
    color: #9ca3af;
    font-size: .95rem;
    margin: 0 0 .5rem;
}
.success-link {
    display: inline-block;
    color: #6C5CE7;
    font-weight: 700;
    text-decoration: none;
}
.success-link:hover { color: #4C44CF; }
.detail-card {
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 8px 24px rgba(31, 27, 77, .08);
    border: 1px solid #f0f1f5;
    padding: 1.1rem 1.25rem;
    text-align: left;
    margin: 1.5rem 0;
}
.detail-row {
    display: flex;
    justify-content: space-between;
    padding: .7rem 0;
    border-bottom: 1px solid #f0f1f5;
    gap: 1rem;
}
.detail-row:last-child { border-bottom: 0; }
.detail-row .lbl { color: #9ca3af; }
.detail-row .val { font-weight: 600; text-align: right; color: #111827; }

/* Auth / Welcome — matches onboarding design */
.mobile-auth {
    min-height: 100vh;
    max-width: 480px;
    margin: 0 auto;
    background: #fff;
    position: relative;
}

.welcome-screen {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 2.25rem 1.5rem 2rem;
    background: #fff;
}

.welcome-top { flex: 0 0 auto; padding-top: .5rem; }

.welcome-logo-badge {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    color: #fff;
    font-size: 1.85rem;
    background: linear-gradient(145deg, #7B74EA 0%, #4C44CF 100%);
    box-shadow: 0 12px 28px rgba(76, 68, 207, .28);
}

.welcome-title {
    font-size: 1.85rem;
    font-weight: 800;
    color: #111827;
    margin: 0 0 .35rem;
    letter-spacing: -.02em;
}

.welcome-tagline {
    font-size: 1.05rem;
    font-weight: 700;
    color: #1f2937;
    margin: 0 0 .45rem;
}

.welcome-desc {
    color: #9ca3af;
    font-size: .95rem;
    margin: 0 auto;
    max-width: 260px;
    line-height: 1.45;
}

.welcome-illustration {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    margin: 1rem 0 1.25rem;
    min-height: 240px;
}

.welcome-svg {
    width: min(320px, 92%);
    height: auto;
    position: relative;
    z-index: 1;
}

.welcome-wave {
    position: absolute;
    left: -8%;
    right: -8%;
    bottom: 0;
    height: 88px;
    background: linear-gradient(180deg, rgba(232, 230, 255, 0) 0%, #E8E6FF 55%, #E0DDFF 100%);
    border-radius: 50% 50% 0 0 / 100% 100% 0 0;
    z-index: 0;
}

.welcome-actions {
    flex: 0 0 auto;
    padding-top: .5rem;
}

.welcome-login-link {
    display: block;
    text-align: center;
    margin-top: 1rem;
    font-weight: 700;
    color: #4C44CF;
    text-decoration: none;
}
.welcome-login-link:hover { color: #3b34b0; }

/* Legacy hero kept for any residual references */
.welcome-hero {
    background: linear-gradient(160deg, #5b54e6 0%, #4C44CF 55%, #3b34b0 100%);
    color: #fff;
    border-radius: 0 0 36px 36px;
    padding: 2.5rem 1.5rem 3rem;
    text-align: center;
}
.welcome-logo {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: rgba(255,255,255,.18);
    display: grid;
    place-items: center;
    margin: 0 auto 1.25rem;
    font-size: 1.8rem;
}
.welcome-art {
    width: min(280px, 80%);
    margin: 1.5rem auto 0;
    aspect-ratio: 1;
    border-radius: 28px;
    background: rgba(255,255,255,.12);
    display: grid;
    place-items: center;
    font-size: 5rem;
}
.welcome-body { padding: 1.75rem 1.35rem 2rem; }

.auth-screen {
    padding: 1.1rem 1.5rem 2rem;
    min-height: 100vh;
    background: #fff;
}

.login-back {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: #111827;
    font-size: 1.35rem;
    text-decoration: none;
    margin-bottom: .75rem;
}
.login-back:hover { color: var(--primary); }

.login-header { margin: .5rem 0 2rem; }

.login-title {
    font-size: 2rem;
    font-weight: 800;
    color: #111827;
    margin: 0 0 .5rem;
    letter-spacing: -.02em;
}

.login-subtitle {
    color: #9ca3af;
    font-size: .95rem;
    margin: 0;
    line-height: 1.45;
}

.login-label {
    font-weight: 700;
    font-size: .9rem;
    color: #1f2937;
    margin-bottom: .45rem;
}

.login-input {
    border-radius: 14px !important;
    padding: .95rem 1.05rem !important;
    border: 1.5px solid #e5e7eb !important;
    font-size: 1rem;
    background: #fff;
}
.login-input:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 .2rem rgba(76, 68, 207, .12) !important;
}

.password-field {
    position: relative;
}
.password-field .login-input {
    padding-right: 3rem !important;
}
.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    border: 0;
    background: transparent;
    color: #9ca3af;
    padding: .25rem;
    line-height: 1;
    z-index: 2;
}
.password-toggle:hover { color: var(--primary); }

.forgot-link {
    color: var(--primary);
    font-size: .9rem;
    font-weight: 600;
    text-decoration: none;
}
.forgot-link:hover { color: var(--primary-dark); }

.btn-login {
    padding: 1rem 1.25rem !important;
    font-size: 1.05rem !important;
    margin-top: .5rem;
}

.login-footer {
    margin-top: 2rem;
    color: #6b7280;
    font-size: .95rem;
}
.login-footer a {
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
}
.login-footer a:hover { color: var(--primary-dark); }

.auth-back {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid var(--border);
    display: inline-grid;
    place-items: center;
    color: var(--text);
    margin-bottom: 1.25rem;
}
.form-control, .form-select {
    border-radius: 12px;
    padding: .8rem 1rem;
    border-color: var(--border);
}
.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 .2rem rgba(76, 68, 207, .15);
}
.input-icon-wrap { position: relative; }
.input-icon-wrap .toggle-pass {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    border: 0;
    background: transparent;
    color: var(--muted);
}

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,.55);
    display: none;
    place-items: center;
    z-index: 2000;
}
.loading-overlay.show { display: grid; }

.qr-frame {
    background: #fff;
    border-radius: 16px;
    padding: 1rem;
    display: inline-block;
}

@media (min-width: 992px) {
    .student-shell,
    .mobile-auth,
    .scan-screen,
    .success-screen {
        border-left: 1px solid var(--border);
        border-right: 1px solid var(--border);
    }
}

@media print {
    .lecturer-sidebar, .lecturer-topbar, .bottom-nav, .no-print { display: none !important; }
}