/* ==========================================================================
   T-PORTAL — Nowoczesny System Stylów (Main CSS)
   Twórca: Rafał Skrzypczyk | Wszelkie prawa zastrzeżone
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
    --bg-dark: #090d16;
    --bg-card: #111726;
    --bg-card-hover: #172033;
    --bg-glass: rgba(17, 23, 38, 0.75);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(56, 189, 248, 0.3);
    
    --primary: #38bdf8;
    --primary-hover: #0284c7;
    --primary-glow: rgba(56, 189, 248, 0.25);
    
    --accent: #6366f1;
    --accent-glow: rgba(99, 102, 241, 0.25);
    
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.12);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.12);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --shadow-subtle: 0 4px 20px -2px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 25px -5px var(--primary-glow);
    
    --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

/* ==================== ZMIENNE MOTYWU JASNEGO ==================== */
:root[data-theme="light"],
html[data-theme="light"],
body.theme-light {
    --bg-dark: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --bg-glass: rgba(255, 255, 255, 0.94);
    --border-color: #e2e8f0;
    --border-highlight: rgba(2, 132, 199, 0.35);
    
    --primary: #0284c7;
    --primary-hover: #0369a1;
    --primary-glow: rgba(2, 132, 199, 0.16);
    
    --accent: #4f46e5;
    --accent-glow: rgba(79, 70, 229, 0.16);
    
    --success: #16a34a;
    --success-bg: #f0fdf4;
    --warning: #d97706;
    --warning-bg: #fffbeb;
    --danger: #dc2626;
    --danger-bg: #fef2f2;
    
    --text-main: #0f172a;
    --text-muted: #475569;
    --text-dim: #64748b;
    
    --shadow-subtle: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 25px -5px rgba(2, 132, 199, 0.12);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(56, 189, 248, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(99, 102, 241, 0.08) 0%, transparent 40%);
    background-attachment: fixed;
}

/* ==================== TYPOGRAFIA & NAGŁÓWKI ==================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.02em;
}

h1 { font-size: 2.25rem; line-height: 1.2; }
h2 { font-size: 1.75rem; line-height: 1.25; }
h3 { font-size: 1.25rem; line-height: 1.3; }

p {
    color: var(--text-muted);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: #7dd3fc;
}

/* ==================== NAWIGACJA & NAGŁÓWEK ==================== */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 800;
    color: #ffffff;
    text-decoration: none;
}

.nav-brand .brand-badge {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* ==================== PRZYCISKI (BUTTONS) ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-main);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #0284c7);
    color: #ffffff;
    box-shadow: 0 2px 10px rgba(56, 189, 248, 0.2);
}
.btn-primary:hover {
    background: linear-gradient(135deg, #7dd3fc, var(--primary));
    box-shadow: 0 4px 16px rgba(56, 189, 248, 0.35);
    transform: translateY(-1px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-main);
    border-color: var(--border-color);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #059669);
    color: #ffffff;
}
.btn-success:hover {
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.35);
    transform: translateY(-1px);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #dc2626);
    color: #ffffff;
}
.btn-danger:hover {
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.35);
    transform: translateY(-1px);
}

/* Reguły wcześniej NIE BYŁO — `btn-warning` występuje w `login.html` (reset hasła)
   i w panelu nauczyciela (przycisk „Oceń otwarte"), ale opierał się wyłącznie na
   stylach inline, więc bez nich przycisk wyglądał jak zwykły `.btn`.
   Amber wymaga CIEMNEGO tekstu: biały na #f59e0b daje kontrast ~2.2:1 i jest nieczytelny. */
.btn-warning {
    background: linear-gradient(135deg, #fbbf24, var(--warning));
    color: #1a1206;
    font-weight: 700;
}
.btn-warning:hover {
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
    transform: translateY(-1px);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1.1rem;
    border-radius: var(--radius-lg);
}

/* ==================== KARTY I KONTENERY ==================== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-subtle);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.14);
}

.card-glass {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
}

/* ==================== FORMULARZE I POLA TEKSTOWE ==================== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 8px;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(9, 13, 22, 0.7);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: #ffffff;
    font-family: var(--font-main);
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
    background: rgba(9, 13, 22, 0.95);
}

.form-input::placeholder, .form-textarea::placeholder {
    color: var(--text-dim);
}

/* ==================== ODZNAKI (BADGES) ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-primary { background: rgba(56, 189, 248, 0.15); color: var(--primary); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }

/* ==================== TABELE ==================== */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table th {
    background: rgba(255, 255, 255, 0.03);
    padding: 14px 18px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

.table td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-main);
}

.table tr:last-child td {
    border-bottom: none;
}

.table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* ==================== MODALE / OKNA DIALOGOWE ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(4, 7, 13, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 50px rgba(0,0,0,0.7);
    transform: scale(0.95);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.2);
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    min-width: 40px;
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    transition: color 0.15s ease, background-color 0.15s ease;
}
.btn-close:hover {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.08);
}

/* Okno dialogowe Portalu (alert / confirm) — zawsze na najwyższej warstwie */
#tportal-dialog {
    z-index: 100000 !important;
}
#tportal-dialog .modal-content {
    touch-action: manipulation;
}
#tportal-dialog .modal-footer button {
    touch-action: manipulation;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}


/* ==================== ALERT & POWIADOMIENIA ==================== */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.alert-danger { background: rgba(220, 38, 38, 0.22); border: 1.5px solid rgba(239, 68, 68, 0.65); color: #fff1f2; font-weight: 600; }
.alert-success { background: var(--success-bg); border: 1px solid rgba(16, 185, 129, 0.3); color: #86efac; }
.alert-warning { background: var(--warning-bg); border: 1px solid rgba(245, 158, 11, 0.3); color: #fde68a; }

/* ==================== STRONA INFORMACYJNA (DLA NAUCZYCIELI) ==================== */
/*
 * Strona dla-nauczycieli.html korzysta wyłącznie z main.css, więc potrzebuje własnych
 * klas kontenera i kafelków. Wcześniej używała .student-container i .student-live-card,
 * które żyją w student.css / teacher.css — te arkusze nie są tam wczytywane, więc treść
 * nie była ani ograniczona szerokością, ani wyśrodkowana.
 */
.page-container {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 32px 16px 64px;
}

.info-tile {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 18px;
}

[data-theme="light"] .info-tile,
body.theme-light .info-tile {
    background: #f8fafc;
    border-color: #e2e8f0;
}

/* ==================== RESPONSYWNOŚĆ ==================== */
@media (max-width: 768px) {
    .navbar {
        padding: 12px 16px;
    }
    .card {
        padding: 18px;
    }
    .page-container {
        padding: 20px 12px 48px;
    }
    /* iOS Safari sam przybliża stronę, gdy dotknięte pole ma czcionkę poniżej
       16 px, i NIE wraca do poprzedniego powiększenia. Uczeń po wpisaniu
       nazwiska zostawał z przesuniętym, powiększonym widokiem formularza.
       16 px to najmniejsza bezpieczna wartość. */
    .form-input,
    .form-select,
    .form-textarea {
        font-size: 16px;
    }
    /* Cele dotykowe w nagłówku: przyciski miały 30–35 px wysokości. */
    .navbar .btn {
        min-height: 44px;
    }
    .nav-brand {
        min-height: 44px;
    }
    /* Nagłówek zawija się zamiast wypychać przyciski poza ekran. Wcześniej na telefonie
       (390 px) pasek miał 800+ px szerokości, a „🚪 Wyloguj" był niewidoczny bez przewijania
       w bok — to samo poprawiono w Quizach (czytelność przycisków wylogowania, 2.6). */
    .navbar {
        flex-wrap: wrap;
        gap: 10px;
        /* Zawinięty pasek jest wysoki — przyklejony zasłaniałby pół ekranu telefonu. */
        position: static;
    }
    .nav-links {
        flex-wrap: wrap;
        gap: 8px;
        width: 100%;
    }
    .nav-links .btn {
        flex: 1 1 auto;
    }
    .nav-links .btn-danger {
        order: 99;
    }
    /* Odznaka „Pytanie 1 z 4" w widoku ucznia miała 12 px — to licznik
       postępu, więc musi być czytelny bez wytężania wzroku. */
    .badge {
        font-size: 0.82rem;
    }
}

/* ==================== STYLIZACJA MOTYWU JASNEGO ==================== */
[data-theme="light"] body,
body.theme-light {
    background-color: var(--bg-dark);
    color: var(--text-main);
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(2, 132, 199, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(79, 70, 229, 0.04) 0%, transparent 40%);
}

[data-theme="light"] h1,
[data-theme="light"] h2,
[data-theme="light"] h3,
[data-theme="light"] h4,
[data-theme="light"] h5,
[data-theme="light"] h6,
body.theme-light h1,
body.theme-light h2,
body.theme-light h3,
body.theme-light h4,
body.theme-light h5,
body.theme-light h6 {
    color: #0f172a;
}

[data-theme="light"] .nav-brand,
body.theme-light .nav-brand {
    color: #0f172a;
}

[data-theme="light"] #user-display-name,
body.theme-light #user-display-name {
    color: #0f172a !important;
}

[data-theme="light"] .navbar,
body.theme-light .navbar {
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .btn-secondary,
body.theme-light .btn-secondary {
    background: #ffffff;
    color: #1e293b;
    border-color: #cbd5e1;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}
[data-theme="light"] .btn-secondary:hover,
body.theme-light .btn-secondary:hover {
    background: #f1f5f9;
    color: #0f172a;
    border-color: #94a3b8;
}

[data-theme="light"] .card,
body.theme-light .card {
    background: #ffffff;
    border-color: #e2e8f0;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
}
[data-theme="light"] .card:hover,
body.theme-light .card:hover {
    border-color: #cbd5e1;
}

[data-theme="light"] .form-input,
[data-theme="light"] .form-select,
[data-theme="light"] .form-textarea,
body.theme-light .form-input,
body.theme-light .form-select,
body.theme-light .form-textarea {
    background: #ffffff;
    border-color: #cbd5e1;
    color: #0f172a;
}
[data-theme="light"] .form-input:focus,
[data-theme="light"] .form-select:focus,
[data-theme="light"] .form-textarea:focus,
body.theme-light .form-input:focus,
body.theme-light .form-select:focus,
body.theme-light .form-textarea:focus {
    background: #ffffff;
    border-color: #0284c7;
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

[data-theme="light"] .form-input::placeholder,
[data-theme="light"] .form-textarea::placeholder,
body.theme-light .form-input::placeholder,
body.theme-light .form-textarea::placeholder {
    color: #94a3b8;
}

[data-theme="light"] .table-responsive,
body.theme-light .table-responsive {
    background: #ffffff;
    border-color: #e2e8f0;
}
[data-theme="light"] .table th,
body.theme-light .table th {
    background: #f8fafc;
    color: #475569;
    border-bottom: 2px solid #e2e8f0;
}
[data-theme="light"] .table td,
body.theme-light .table td {
    color: #1e293b;
    border-bottom: 1px solid #f1f5f9;
}
[data-theme="light"] .table tbody tr:hover,
body.theme-light .table tbody tr:hover {
    background: #f8fafc;
}

[data-theme="light"] .modal-overlay,
body.theme-light .modal-overlay {
    background: rgba(15, 23, 42, 0.45);
}
[data-theme="light"] .modal-content,
body.theme-light .modal-content {
    background: #ffffff;
    border-color: #e2e8f0;
    color: #0f172a;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}
[data-theme="light"] .modal-header,
body.theme-light .modal-header {
    border-bottom: 1px solid #e2e8f0;
}
[data-theme="light"] .modal-footer,
body.theme-light .modal-footer {
    background: #f8fafc;
    border-top: 1px solid #e2e8f0;
}
[data-theme="light"] .btn-close,
body.theme-light .btn-close {
    color: #64748b;
}
[data-theme="light"] .btn-close:hover,
body.theme-light .btn-close:hover {
    color: #0f172a;
}

[data-theme="light"] .alert-danger,
body.theme-light .alert-danger { background: #fef2f2; border: 1.5px solid #dc2626; color: #991b1b; font-weight: 600; }
[data-theme="light"] .alert-success,
body.theme-light .alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #166534; }
[data-theme="light"] .alert-warning,
body.theme-light .alert-warning { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; }

[data-theme="light"] .badge-success,
body.theme-light .badge-success { background: #dcfce7; color: #15803d; border: 1px solid #86efac; font-weight: 700; }
[data-theme="light"] .badge-danger,
body.theme-light .badge-danger { background: #fee2e2; color: #b91c1c; border: 1px solid #fca5a5; font-weight: 700; }
[data-theme="light"] .badge-warning,
body.theme-light .badge-warning { background: #fef3c7; color: #b45309; border: 1px solid #fde68a; font-weight: 700; }
[data-theme="light"] .badge-secondary,
body.theme-light .badge-secondary { background: #f1f5f9; color: #475569; border: 1px solid #cbd5e1; font-weight: 700; }

[data-theme="light"] #res-total-students,
body.theme-light #res-total-students {
    color: #0f172a !important;
}

/* ==================== STOPKA PORTALU (PROJEKT ROZWIJANY) ==================== */
.footer {
    text-align: center;
    padding: 36px 20px 28px 20px;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
    margin-top: 48px;
    background: transparent;
    position: relative;
    z-index: 1;
}

.footer-dev-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.28);
    border-radius: 9999px;
    margin-bottom: 12px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--primary);
    box-shadow: 0 0 16px -4px rgba(56, 189, 248, 0.2);
    transition: all 0.25s ease;
}

.footer-dev-badge:hover {
    background: rgba(56, 189, 248, 0.14);
    border-color: rgba(56, 189, 248, 0.45);
    transform: translateY(-1px);
}

.footer-pulse-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    box-shadow: 0 0 8px #22c55e;
    animation: footerPulse 2s infinite ease-in-out;
}

@keyframes footerPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.35; transform: scale(0.85); }
}

[data-theme="light"] .footer-dev-badge,
body.theme-light .footer-dev-badge {
    background: rgba(2, 132, 199, 0.08);
    border-color: rgba(2, 132, 199, 0.25);
    color: #0284c7;
}

/* ---- Reset hasła: metoda zastępcza w <details> ---- */
.recover-alt {
    margin-top: 18px;
    border-top: 1px dashed var(--border-color, #d1d5db);
    padding-top: 14px;
}
.recover-alt > summary {
    cursor: pointer;
    list-style: none;
    color: var(--text-muted, #6b7280);
    font-size: 0.92rem;
    font-weight: 600;
    user-select: none;
}
.recover-alt > summary::-webkit-details-marker { display: none; }
.recover-alt > summary::before { content: "▸ "; }
.recover-alt[open] > summary::before { content: "▾ "; }
.recover-alt > summary:hover { color: var(--primary, #4f46e5); }

/* ===== Siła hasła i zgodność haseł (PasswordUX w js/auth.js) ===== */
.pw-meter { margin-top: 8px; }
.pw-meter.is-empty { display: none; }
.pw-meter-bars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; }
.pw-meter-bars span { height: 5px; border-radius: 3px; background: var(--border-color, rgba(148, 163, 184, 0.35)); transition: background 0.2s; }
.pw-meter-text { margin-top: 5px; font-size: 0.78rem; font-weight: 600; line-height: 1.4; }
.pw-weak .pw-meter-bars span.on { background: var(--danger); }
.pw-weak .pw-meter-text { color: var(--danger); }
.pw-fair .pw-meter-bars span.on { background: var(--warning); }
.pw-fair .pw-meter-text { color: var(--warning); }
.pw-good .pw-meter-bars span.on { background: #0ea5e9; }
.pw-good .pw-meter-text { color: #0284c7; }
.pw-strong .pw-meter-bars span.on { background: var(--success); }
.pw-strong .pw-meter-text { color: var(--success); }
.pw-match { margin-top: 6px; font-size: 0.8rem; font-weight: 700; min-height: 0; }
.pw-match.is-ok { color: var(--success); }
.pw-match.is-bad { color: var(--danger); }
.code-status { display: block; margin-top: 6px; font-size: 0.8rem; font-weight: 600; }
.code-status.is-ok { color: var(--success); }
.code-status.is-bad { color: var(--danger); }
.form-hint { display: block; margin-top: 5px; font-size: 0.76rem; color: var(--text-dim, var(--text-muted)); line-height: 1.45; }

/* Przycisk wylogowania: pełny kontrast w obu motywach (tekst biały na czerwieni,
   ramka dla odróżnienia od tła jasnego nagłówka). */
.navbar .btn-danger { color: #ffffff; font-weight: 700; border: 1px solid rgba(0, 0, 0, 0.08); }
.navbar .btn-danger:focus-visible { outline: 3px solid rgba(239, 68, 68, 0.45); outline-offset: 2px; }

/* Maskowanie loginów uczniów podczas prezentacji ekranu klasie */
.student-login-box {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 3px;
}
.student-login-text {
    font-family: var(--font-mono);
    font-size: 0.92rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    user-select: none;
    transition: all 0.2s ease;
}
.student-login-text.is-visible {
    color: var(--primary);
    letter-spacing: normal;
    user-select: auto;
}
.btn-toggle-single-login {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 2px 7px;
    font-size: 0.72rem;
    cursor: pointer;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: all 0.2s ease;
}
.btn-toggle-single-login:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(56, 189, 248, 0.1);
}
[data-theme="light"] .btn-toggle-single-login,
body.theme-light .btn-toggle-single-login {
    background: #f1f5f9;
    border-color: #cbd5e1;
    color: #475569;
}
[data-theme="light"] .btn-toggle-single-login:hover,
body.theme-light .btn-toggle-single-login:hover {
    background: #e0f2fe;
    border-color: #0284c7;
    color: #0284c7;
}