/* ============================================================
   panel.css — Umiem Liczyć! / Panel ucznia
   Spójny z paletą głównej strony (--primary-color: #2A5C82)
   ============================================================ */

/* ── Reset + base ─────────────────────────────────────────── */
:root {
    --primary:      #2A5C82;
    --secondary:    #3D8B9E;
    --accent:       #FFD166;
    --accent-coral: #FF6F61;
    --light-bg:     #F5F5F5;
    --white:        #FFFFFF;
    --gray-100:     #F1F1F1;
    --gray-200:     #E2E2E2;
    --gray-400:     #A0A0A0;
    --gray-600:     #707070;
    --gray-900:     #222222;
    --success-bg:   #D4EDDA;
    --success-text: #155724;
    --warning-bg:   #FFF3CD;
    --warning-text: #856404;
    --error-bg:     #F8D7DA;
    --error-text:   #721C24;
    --info-bg:      #D1ECF1;
    --info-text:    #0C5460;
    --border:       #E0E0E0;
    --radius:       10px;
    --radius-sm:    6px;
    --topbar-h:     56px;
    --sidebar-w:    220px;
    --shadow:       0 1px 4px rgba(0,0,0,.08);
}

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

html { -webkit-text-size-adjust: 100%; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.55;
    color: var(--gray-900);
    background: var(--light-bg);
    min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }


/* ============================================================
   STRONA LOGOWANIA
   ============================================================ */

.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--light-bg);
    padding: 20px;
}

.login-wrap {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px 36px;
}

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

.login-logo img {
    margin: 0 auto 12px;
    border-radius: 50%;
    border: 3px solid var(--accent);
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: .04em;
}

.login-subtitle {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-top: 4px;
}

/* Alerty ─────────────────────────────────────────────────── */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    margin-bottom: 18px;
    line-height: 1.5;
}

.alert i { flex-shrink: 0; margin-top: 2px; }

.alert-error   { background: var(--error-bg);   color: var(--error-text); }
.alert-info    { background: var(--info-bg);    color: var(--info-text); }
.alert-warning { background: var(--warning-bg); color: var(--warning-text); }

/* Formularz ──────────────────────────────────────────────── */
.form-group { margin-bottom: 18px; }

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 6px;
}

.input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 12px;
    color: var(--gray-400);
    font-size: 14px;
    pointer-events: none;
}

.input-wrap input {
    width: 100%;
    padding: 10px 12px 10px 36px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    background: var(--white);
    color: var(--gray-900);
    transition: border-color .2s, box-shadow .2s;
    appearance: none;
}

.input-wrap input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(42,92,130,.12);
}

.toggle-pw {
    position: absolute;
    right: 10px;
    background: none;
    border: none;
    color: var(--gray-400);
    font-size: 14px;
    padding: 4px;
    line-height: 1;
}

.toggle-pw:hover { color: var(--gray-600); }

/* Przycisk logowania ─────────────────────────────────────── */
.btn-login {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 11px 20px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    margin-top: 6px;
    transition: background .2s;
}

.btn-login:hover { background: var(--secondary); }

.login-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.login-footer a { color: var(--primary); }
.login-footer a:hover { text-decoration: underline; }


/* ============================================================
   LAYOUT PANELU (topbar + sidebar + main)
   ============================================================ */

.panel-body { background: var(--light-bg); }

.panel-shell {
    display: flex;
    min-height: 100vh;
}

/* ── Topbar ───────────────────────────────────────────────── */
.topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--topbar-h);
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 300;
    box-shadow: 0 2px 8px rgba(0,0,0,.15);
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: .04em;
}

.topbar-brand img { border-radius: 50%; }

.topbar-user {
    display: flex;
    align-items: center;
    gap: 10px;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255,255,255,.2);
    border: 2px solid rgba(255,255,255,.35);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.topbar-name {
    font-size: 0.9rem;
    max-width: 160px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.topbar-logout {
    color: rgba(255,255,255,.75);
    font-size: 1rem;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: color .2s, background .2s;
}

.topbar-logout:hover {
    color: var(--white);
    background: rgba(255,255,255,.12);
    text-decoration: none;
}

/* ── Sidebar ──────────────────────────────────────────────── */
.sidebar {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    width: var(--sidebar-w);
    height: calc(100vh - var(--topbar-h));
    background: var(--white);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    z-index: 200;
    transition: transform .25s ease;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    font-size: 0.9rem;
    color: var(--gray-600);
    border-radius: 0;
    transition: background .15s, color .15s;
    text-decoration: none;
    position: relative;
}

.nav-item:hover {
    background: var(--gray-100);
    color: var(--primary);
    text-decoration: none;
}

.nav-item.active {
    background: #EBF4FB;
    color: var(--primary);
    font-weight: 600;
    border-right: 3px solid var(--primary);
}

.nav-icon {
    width: 16px;
    text-align: center;
    flex-shrink: 0;
    color: inherit;
}

.nav-badge {
    margin-left: auto;
    background: var(--primary);
    color: var(--white);
    font-size: 10px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 20px;
    min-width: 18px;
    text-align: center;
}

.nav-badge-warn { background: var(--accent-coral); }

.sidebar-bottom {
    padding: 12px 0;
    border-top: 1px solid var(--border);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 190;
}

/* ── Main ─────────────────────────────────────────────────── */
.panel-main {
    flex: 1;
    margin-left: var(--sidebar-w);
    margin-top: var(--topbar-h);
    padding: 28px 28px 40px;
    min-height: calc(100vh - var(--topbar-h));
    max-width: 900px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    color: var(--gray-600);
    font-size: 1rem;
    margin-bottom: 16px;
}

/* ── Nagłówek strony ──────────────────────────────────────── */
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.page-sub {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-top: 3px;
}

/* ── Przyciski ────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid var(--border);
    background: var(--white);
    color: var(--gray-900);
    transition: background .15s, border-color .15s;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
}

.btn:hover { background: var(--gray-100); text-decoration: none; }

.btn-primary {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.btn-primary:hover { background: var(--secondary); border-color: var(--secondary); }

.btn-copy {
    padding: 6px 12px;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.btn-copied {
    background: var(--success-bg);
    color: var(--success-text);
    border-color: #c3e6cb;
}

/* ── Metryki ──────────────────────────────────────────────── */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.metric-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow);
}

.metric-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.metric-icon-blue { background: #EBF4FB; color: var(--primary); }
.metric-icon-teal { background: #E6F5F5; color: var(--secondary); }
.metric-icon-warn { background: #FFF3CD; color: #b07a00; }

.metric-label {
    font-size: 0.78rem;
    color: var(--gray-600);
    font-weight: 500;
    margin-bottom: 3px;
}

.metric-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.1;
}

.value-warn { color: #b07a00; }

/* ── Karty ────────────────────────────────────────────────── */
.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 8px;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
}

.card-link {
    font-size: 0.83rem;
    color: var(--primary);
    font-weight: 500;
}

.card-link:hover { text-decoration: underline; }

/* ── Lista zajęć ─────────────────────────────────────────── */
.session-list { margin: 0; }

.session-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
    gap: 12px;
    flex-wrap: wrap;
}

.session-row:last-child { border-bottom: none; padding-bottom: 0; }

.session-info {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
}

.session-date {
    font-size: 0.875rem;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: 6px;
}

.session-date i { color: var(--primary); }

.session-dur {
    font-size: 0.82rem;
    color: var(--gray-600);
    display: flex;
    align-items: center;
    gap: 5px;
}

.session-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.session-note {
    font-size: 0.8rem;
    color: var(--gray-600);
    font-style: italic;
    max-width: 200px;
}

/* ── Badges ───────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.badge-success { background: var(--success-bg); color: var(--success-text); }
.badge-warning { background: var(--warning-bg); color: var(--warning-text); }
.badge-error   { background: var(--error-bg);   color: var(--error-text); }
.badge-info    { background: var(--info-bg);     color: var(--info-text); }
.badge-gray    { background: var(--gray-200);    color: var(--gray-600); }

/* ── Pusta lista ──────────────────────────────────────────── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px 20px;
    text-align: center;
    color: var(--gray-600);
    font-size: 0.9rem;
    gap: 6px;
}

.empty-icon {
    font-size: 2rem;
    color: var(--gray-400);
    margin-bottom: 8px;
}

/* ── Faktura ─────────────────────────────────────────────── */
.invoice-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.invoice-num {
    font-weight: 700;
    color: var(--primary);
    font-size: 1rem;
}

.invoice-date {
    font-size: 0.83rem;
    color: var(--gray-600);
    margin-top: 3px;
}

.invoice-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.invoice-amount {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-900);
}

/* ── iCal ────────────────────────────────────────────────── */
.card-ical { border-color: #B5D4F4; }

.ical-desc {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 14px;
}

.ical-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.ical-url {
    flex: 1;
    font-family: 'SFMono-Regular', Consolas, 'Courier New', monospace;
    font-size: 0.78rem;
    background: var(--gray-100);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    color: var(--primary);
    word-break: break-all;
    min-width: 0;
}

/* ── Tabele ───────────────────────────────────────────────── */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table th {
    text-align: left;
    font-weight: 600;
    font-size: 0.78rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: .04em;
    padding: 8px 12px;
    border-bottom: 2px solid var(--border);
    background: var(--gray-100);
}

.data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
    color: var(--gray-900);
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover td { background: var(--gray-100); }


/* ============================================================
   RESPONSYWNOŚĆ
   ============================================================ */

@media (max-width: 900px) {
    .metrics-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 700px) {
    .sidebar {
        transform: translateX(-100%);
        z-index: 250;
    }

    .sidebar.sidebar-open {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0,0,0,.15);
    }

    .sidebar-overlay.overlay-open {
        display: block;
    }

    .panel-main {
        margin-left: 0;
        padding: 16px 16px 32px;
    }

    .mobile-menu-btn { display: flex; }

    .topbar-name { display: none; }

    .metrics-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .session-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .ical-row { flex-direction: column; align-items: stretch; }

    .ical-url { font-size: 0.72rem; }

    .card { padding: 16px; }

    .login-card { padding: 28px 20px; }
}

@media (max-width: 400px) {
    .metrics-grid { grid-template-columns: 1fr; }
    .metric-value { font-size: 1.35rem; }
}