/* =============================================================================
   Lern Buddy — Design System v1
   Eine einzige Quelle der Wahrheit für Tokens, Komponenten, Utilities.
   Wird von allen Seiten via _partials/lb_head.php eingebunden.
============================================================================= */

/* ----- Tokens: dark theme ist Standard, light über data-theme="light" ----- */
:root,
:root[data-theme="dark"] {
    color-scheme: dark;

    /* Hintergründe */
    --lb-bg: radial-gradient(circle at 12% -8%, #14233a 0%, #060c18 55%, #02050b 100%);
    --lb-bg-flat: #060c18;
    --lb-surface: rgba(15, 23, 42, .72);
    --lb-surface-2: rgba(15, 23, 42, .55);
    --lb-surface-strong: rgba(8, 14, 26, .88);
    --lb-glass: rgba(15, 23, 42, .42);
    --lb-overlay: rgba(2, 6, 23, .55);

    /* Text */
    --lb-text: #e7eef9;
    --lb-text-soft: #c2cfe1;
    --lb-text-muted: #8a9bb3;

    /* Lines & dividers */
    --lb-border: rgba(148, 163, 184, .18);
    --lb-border-strong: rgba(148, 163, 184, .32);
    --lb-divider: rgba(148, 163, 184, .12);

    /* Brand & accents */
    --lb-brand: #38bdf8;
    --lb-brand-strong: #0ea5e9;
    --lb-brand-deep: #0c4a6e;
    --lb-brand-soft: rgba(56, 189, 248, .14);
    --lb-brand-ring: rgba(56, 189, 248, .35);
    --lb-brand-grad: linear-gradient(120deg, #0ea5e9 0%, #38bdf8 60%, #7dd3fc 100%);

    /* Avatar farben */
    --lb-avatar-einstein: #fbbf24;
    --lb-avatar-einstein-soft: rgba(251, 191, 36, .14);
    --lb-avatar-bach: #c084fc;
    --lb-avatar-bach-soft: rgba(192, 132, 252, .14);
    --lb-avatar-beraterin: #5eead4;
    --lb-avatar-beraterin-soft: rgba(94, 234, 212, .14);

    /* Status */
    --lb-success: #4ade80;
    --lb-success-soft: rgba(74, 222, 128, .14);
    --lb-warning: #facc15;
    --lb-warning-soft: rgba(250, 204, 21, .14);
    --lb-danger: #fb7185;
    --lb-danger-soft: rgba(251, 113, 133, .14);

    /* Schatten – zweistufig, subtiler als vorher */
    --lb-shadow-sm: 0 1px 0 rgba(255, 255, 255, .04), 0 2px 6px rgba(2, 6, 23, .35);
    --lb-shadow-md: 0 1px 0 rgba(255, 255, 255, .04), 0 8px 24px rgba(2, 6, 23, .35);
    --lb-shadow-lg: 0 1px 0 rgba(255, 255, 255, .04), 0 18px 48px rgba(2, 6, 23, .45);
    --lb-shadow-glow: 0 12px 32px rgba(14, 165, 233, .28);

    /* Radius */
    --lb-radius-xs: .35rem;
    --lb-radius-sm: .55rem;
    --lb-radius-md: .85rem;
    --lb-radius-lg: 1.15rem;
    --lb-radius-xl: 1.5rem;
    --lb-radius-pill: 999px;

    /* Spacing scale */
    --lb-space-1: .25rem;
    --lb-space-2: .5rem;
    --lb-space-3: .75rem;
    --lb-space-4: 1rem;
    --lb-space-5: 1.25rem;
    --lb-space-6: 1.5rem;
    --lb-space-8: 2rem;
    --lb-space-10: 2.5rem;
    --lb-space-12: 3rem;

    /* Typografie */
    --lb-font-display: "Sora", "InterVariable", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --lb-font-text: "InterVariable", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

    /* Transitions */
    --lb-ease: cubic-bezier(.2, .8, .2, 1);
}

:root[data-theme="light"] {
    color-scheme: light;

    --lb-bg: linear-gradient(135deg, #f6f9ff 0%, #fbf5ff 60%, #eef9ff 100%);
    --lb-bg-flat: #f6f9ff;
    --lb-surface: rgba(255, 255, 255, .92);
    --lb-surface-2: rgba(255, 255, 255, .78);
    --lb-surface-strong: #ffffff;
    --lb-glass: rgba(255, 255, 255, .68);
    --lb-overlay: rgba(15, 23, 42, .35);

    --lb-text: #0f172a;
    --lb-text-soft: #2c3a52;
    --lb-text-muted: #5f6c85;

    --lb-border: rgba(15, 23, 42, .1);
    --lb-border-strong: rgba(15, 23, 42, .18);
    --lb-divider: rgba(15, 23, 42, .07);

    --lb-brand: #2563eb;
    --lb-brand-strong: #1d4ed8;
    --lb-brand-deep: #1e3a8a;
    --lb-brand-soft: rgba(37, 99, 235, .1);
    --lb-brand-ring: rgba(37, 99, 235, .25);
    --lb-brand-grad: linear-gradient(120deg, #1d4ed8 0%, #2563eb 55%, #38bdf8 100%);

    --lb-avatar-einstein: #d97706;
    --lb-avatar-einstein-soft: rgba(217, 119, 6, .1);
    --lb-avatar-bach: #7c3aed;
    --lb-avatar-bach-soft: rgba(124, 58, 237, .1);
    --lb-avatar-beraterin: #0d9488;
    --lb-avatar-beraterin-soft: rgba(13, 148, 136, .1);

    --lb-success: #059669;
    --lb-success-soft: rgba(5, 150, 105, .12);
    --lb-warning: #b45309;
    --lb-warning-soft: rgba(180, 83, 9, .12);
    --lb-danger: #dc2626;
    --lb-danger-soft: rgba(220, 38, 38, .1);

    --lb-shadow-sm: 0 1px 0 rgba(255, 255, 255, .8), 0 2px 6px rgba(15, 23, 42, .08);
    --lb-shadow-md: 0 1px 0 rgba(255, 255, 255, .8), 0 8px 24px rgba(15, 23, 42, .08);
    --lb-shadow-lg: 0 1px 0 rgba(255, 255, 255, .8), 0 18px 48px rgba(15, 23, 42, .12);
    --lb-shadow-glow: 0 12px 32px rgba(37, 99, 235, .22);
}

/* ----- Reset & Basis ----- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
    margin: 0;
    min-height: 100vh;
    background: var(--lb-bg);
    color: var(--lb-text);
    font-family: var(--lb-font-text);
    font-size: 15px;
    line-height: 1.55;
    font-feature-settings: "ss01", "cv11";
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg { max-width: 100%; display: block; }

/* [hidden] muss IMMER gewinnen — sonst überstimmt jede Komponente mit
   eigenem display (z. B. .lb-empty { display:flex }) das HTML-Attribut. */
[hidden] { display: none !important; }

h1, h2, h3, h4, h5, h6 {
    font-family: var(--lb-font-display);
    font-weight: 600;
    letter-spacing: -.018em;
    line-height: 1.18;
    margin: 0;
    color: var(--lb-text);
}

h1 { font-size: clamp(1.75rem, 2.6vw, 2.4rem); letter-spacing: -.025em; }
h2 { font-size: clamp(1.15rem, 1.6vw, 1.4rem); }
h3 { font-size: 1.05rem; }
p { margin: 0; }

a { color: var(--lb-brand); text-decoration: none; }
a:hover { text-decoration: underline; }

::selection { background: var(--lb-brand-soft); color: var(--lb-text); }

:focus-visible {
    outline: 2px solid var(--lb-brand);
    outline-offset: 2px;
    border-radius: var(--lb-radius-xs);
}

/* Reduzierte Bewegung respektieren */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Skip link — bis zum Fokus komplett unsichtbar (clip statt Offset,
   damit kein Pixelstreifen am oberen Rand durchblitzt). */
.lb-skip {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: .55rem .85rem;
    background: var(--lb-brand);
    color: #fff;
    border-radius: var(--lb-radius-sm);
    z-index: 9999;
    font-weight: 600;
    text-decoration: none;
    clip-path: inset(50%);
    width: 1px;
    height: 1px;
    overflow: hidden;
    white-space: nowrap;
}
.lb-skip:focus {
    clip-path: none;
    width: auto;
    height: auto;
    overflow: visible;
}

/* ----- Layout helpers ----- */
.lb-container { width: min(1180px, 100%); margin-inline: auto; padding-inline: clamp(1rem, 2.5vw, 1.6rem); }
.lb-stack { display: flex; flex-direction: column; gap: var(--lb-space-4); }
.lb-row { display: flex; flex-wrap: wrap; gap: var(--lb-space-3); align-items: center; }
.lb-spread { display: flex; justify-content: space-between; align-items: center; gap: var(--lb-space-3); flex-wrap: wrap; }
.lb-mt-2 { margin-top: var(--lb-space-2); }
.lb-mt-3 { margin-top: var(--lb-space-3); }
.lb-mt-4 { margin-top: var(--lb-space-4); }
.lb-mt-6 { margin-top: var(--lb-space-6); }
.lb-text-muted { color: var(--lb-text-muted); }
.lb-text-soft { color: var(--lb-text-soft); }
.lb-text-sm { font-size: .85rem; }
.lb-text-xs { font-size: .75rem; }
.lb-eyebrow {
    text-transform: uppercase;
    letter-spacing: .14em;
    font-size: .68rem;
    font-weight: 600;
    color: var(--lb-text-muted);
}

/* ----- Header / Topbar ----- */
.lb-header {
    position: sticky;
    top: 0;
    z-index: 30;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--lb-space-4);
    padding: .75rem clamp(1rem, 2vw, 1.4rem);
    background: color-mix(in srgb, var(--lb-bg-flat) 92%, transparent);
    border-bottom: 1px solid var(--lb-border);
    backdrop-filter: saturate(160%) blur(14px);
    -webkit-backdrop-filter: saturate(160%) blur(14px);
}

/* Brand pill */
.brand-pill,
.lb-brand {
    display: inline-flex;
    align-items: center;
    gap: .65rem;
    padding: .35rem .95rem .35rem .45rem;
    border-radius: var(--lb-radius-pill);
    border: 1px solid var(--lb-border);
    background: linear-gradient(130deg, color-mix(in srgb, var(--lb-brand) 18%, transparent), color-mix(in srgb, var(--lb-avatar-bach) 14%, transparent));
    box-shadow: var(--lb-shadow-sm);
    color: var(--lb-text);
    text-decoration: none;
    min-height: 44px;
    transition: transform .2s var(--lb-ease), box-shadow .2s var(--lb-ease);
}
.brand-pill:hover,
.lb-brand:hover { transform: translateY(-1px); box-shadow: var(--lb-shadow-md); text-decoration: none; }

.brand-pill img,
.lb-brand img,
.lb-brand .lb-brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    object-fit: contain;
    /* Helles Plättchen, damit das dunkle Vivato-Logo in beiden Themes klar zu sehen ist. */
    background: #ffffff;
    padding: 3px;
    flex-shrink: 0;
    box-shadow: 0 1px 0 rgba(255, 255, 255, .15) inset, 0 4px 10px rgba(2, 6, 23, .25);
}
:root[data-theme="light"] .brand-pill img,
:root[data-theme="light"] .lb-brand img,
:root[data-theme="light"] .lb-brand .lb-brand-mark {
    background: #ffffff;
    box-shadow: 0 1px 0 rgba(255, 255, 255, .8) inset, 0 4px 10px rgba(15, 23, 42, .12);
}

.brand-pill-text,
.lb-brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.05;
    font-family: var(--lb-font-display);
    min-width: 0;
}
.brand-pill-text strong,
.lb-brand-text strong {
    font-size: .95rem;
    font-weight: 600;
    letter-spacing: -.012em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.brand-pill-text span,
.lb-brand-text span {
    font-size: .6rem;
    letter-spacing: .26em;
    text-transform: uppercase;
    color: var(--lb-text-muted);
    margin-top: 2px;
}

.lb-header-actions,
.header-actions,
.top-actions {
    display: flex;
    align-items: center;
    gap: var(--lb-space-2);
    flex-wrap: wrap;
    justify-content: flex-end;
}

.user-pill,
.pill {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    background: var(--lb-glass);
    border: 1px solid var(--lb-border);
    border-radius: var(--lb-radius-pill);
    padding: .35rem .8rem;
    font-size: .78rem;
    color: var(--lb-text-soft);
    line-height: 1;
    min-height: 32px;
}

.theme-toggle {
    border: 1px solid var(--lb-border);
    background: var(--lb-glass);
    color: var(--lb-text);
    border-radius: var(--lb-radius-pill);
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform .2s var(--lb-ease), border-color .2s var(--lb-ease);
}
.theme-toggle:hover { border-color: var(--lb-brand-ring); }
.theme-toggle svg { width: 18px; height: 18px; stroke-width: 2; }
.theme-toggle .lb-icon-sun { display: none; }
.theme-toggle[data-mode="light"] .lb-icon-moon { display: none; }
.theme-toggle[data-mode="light"] .lb-icon-sun { display: inline; }

.logout,
.top-link {
    color: var(--lb-text-muted);
    text-decoration: none;
    font-size: .8rem;
    padding: .35rem .55rem;
    border-radius: var(--lb-radius-sm);
}
.logout:hover,
.top-link:hover { color: var(--lb-text); text-decoration: none; background: var(--lb-glass); }

/* Back button */
.back-button,
.lb-back {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .42rem .9rem;
    border-radius: var(--lb-radius-md);
    border: 1px solid var(--lb-border);
    color: var(--lb-text);
    text-decoration: none;
    font-size: .85rem;
    background: var(--lb-glass);
    transition: border-color .2s var(--lb-ease), color .2s var(--lb-ease), transform .2s var(--lb-ease);
}
.back-button:hover,
.lb-back:hover { border-color: var(--lb-brand); color: var(--lb-brand); text-decoration: none; transform: translateX(-1px); }
.back-button svg,
.lb-back svg { width: 14px; height: 14px; }

/* ----- Buttons -----
   Hinweis: alle Selektoren sind reine Klassen-Selektoren (nicht `button.lb-btn`),
   damit Modifier wie `.lb-btn--primary` nicht durch höhere Element-Spezifität
   überstimmt werden. Ohne diese Disziplin bekam der Anmelden-Button das
   dunkle Glass-Background statt des Markenfarb-Verlaufs. */
.lb-btn,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    padding: .58rem 1.05rem;
    border-radius: var(--lb-radius-md);
    border: 1px solid var(--lb-border);
    background: var(--lb-glass);
    color: var(--lb-text);
    font-family: inherit;
    font-size: .9rem;
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
    transition: transform .15s var(--lb-ease), box-shadow .2s var(--lb-ease), border-color .2s var(--lb-ease), background .2s var(--lb-ease);
    white-space: nowrap;
}
.lb-btn:hover,
.btn:hover { transform: translateY(-1px); box-shadow: var(--lb-shadow-sm); text-decoration: none; }
.lb-btn:active { transform: translateY(0); }
.lb-btn[disabled],
.lb-btn:disabled,
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; box-shadow: none; }

.lb-btn--primary,
.btn-primary,
.btn.primary,
.lb-btn.primary {
    border-color: transparent;
    background: var(--lb-brand-grad);
    color: #ffffff;
    box-shadow: var(--lb-shadow-glow);
    text-shadow: 0 1px 0 rgba(2, 6, 23, .25);
}
.lb-btn--primary:hover,
.btn-primary:hover,
.btn.primary:hover,
.lb-btn.primary:hover {
    box-shadow: 0 16px 40px color-mix(in srgb, var(--lb-brand) 50%, transparent);
    color: #ffffff;
}

.lb-btn--secondary,
.btn-secondary {
    background: var(--lb-surface-2);
    color: var(--lb-text);
    border-color: var(--lb-border);
}

.lb-btn--ghost {
    background: transparent;
    border-color: transparent;
    color: var(--lb-text-soft);
}
.lb-btn--ghost:hover { background: var(--lb-glass); color: var(--lb-text); }

.lb-btn--sm { padding: .4rem .75rem; font-size: .82rem; }
.lb-btn--lg { padding: .8rem 1.4rem; font-size: 1rem; }
.lb-btn svg, .btn svg { width: 16px; height: 16px; stroke-width: 2; }

/* Icon-only button */
.lb-iconbtn {
    width: 38px; height: 38px; padding: 0;
    border-radius: var(--lb-radius-pill);
    border: 1px solid var(--lb-border);
    background: var(--lb-glass);
    display: inline-flex; align-items: center; justify-content: center;
    color: var(--lb-text);
    cursor: pointer;
    transition: border-color .2s var(--lb-ease), transform .15s var(--lb-ease);
}
.lb-iconbtn:hover { border-color: var(--lb-brand); transform: translateY(-1px); }
.lb-iconbtn svg { width: 18px; height: 18px; }

/* ----- Surfaces / Cards ----- */
.lb-card,
.card,
.panel,
.action-card,
.summary-card,
.focus-card,
.module {
    background: var(--lb-surface);
    border: 1px solid var(--lb-border);
    border-radius: var(--lb-radius-lg);
    padding: clamp(1rem, 2vw, 1.25rem);
    box-shadow: var(--lb-shadow-md);
    color: var(--lb-text);
}

.lb-card--soft { background: var(--lb-glass); box-shadow: var(--lb-shadow-sm); }
.lb-card--strong { background: var(--lb-surface-strong); box-shadow: var(--lb-shadow-lg); }
.lb-card--accent {
    background: linear-gradient(135deg, var(--lb-brand-soft), color-mix(in srgb, var(--lb-avatar-bach) 8%, transparent));
    border-color: var(--lb-brand-ring);
}
.lb-card--success { background: var(--lb-success-soft); border-color: color-mix(in srgb, var(--lb-success) 35%, transparent); }
.lb-card--warning { background: var(--lb-warning-soft); border-color: color-mix(in srgb, var(--lb-warning) 35%, transparent); }
.lb-card--danger  { background: var(--lb-danger-soft);  border-color: color-mix(in srgb, var(--lb-danger) 35%, transparent); }

.summary-card {
    padding: .85rem 1rem;
    border-radius: var(--lb-radius-md);
    box-shadow: var(--lb-shadow-sm);
}
.summary-card small {
    color: var(--lb-text-muted);
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .12em;
    font-weight: 600;
}
.summary-card strong {
    display: block;
    margin-top: .35rem;
    font-size: 1.55rem;
    font-family: var(--lb-font-display);
    font-weight: 600;
    letter-spacing: -.018em;
}

/* ----- Hero ----- */
.lb-hero,
.hero {
    position: relative;
    overflow: hidden;
    padding: clamp(1.4rem, 3vw, 2rem);
    border-radius: var(--lb-radius-xl);
    background: var(--lb-surface);
    border: 1px solid var(--lb-border);
    box-shadow: var(--lb-shadow-md);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--lb-space-5);
    align-items: center;
}
.lb-hero::before {
    content: "";
    position: absolute;
    inset: -120px auto auto -100px;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, color-mix(in srgb, var(--lb-brand) 28%, transparent) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}
.lb-hero::after {
    content: "";
    position: absolute;
    inset: auto -120px -150px auto;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, color-mix(in srgb, var(--lb-avatar-bach) 22%, transparent) 0%, transparent 72%);
    pointer-events: none;
    z-index: 0;
}
.lb-hero > * { position: relative; z-index: 1; }
.lb-hero h1 { letter-spacing: -.028em; }
.lb-hero p { color: var(--lb-text-soft); margin-top: .35rem; max-width: 56ch; font-size: 1rem; }

@media (max-width: 760px) {
    .lb-hero, .hero { grid-template-columns: 1fr; }
}

/* Hero pills */
.hero-pills, .lb-hero-pills {
    display: flex;
    gap: .4rem;
    flex-wrap: wrap;
}
.hero-pill {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    border: 1px solid var(--lb-border);
    background: var(--lb-glass);
    border-radius: var(--lb-radius-pill);
    padding: .32rem .8rem;
    font-size: .76rem;
    color: var(--lb-text-soft);
}

/* ----- Pills, Chips, Badges ----- */
.chip,
.lb-chip {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    border: 1px solid var(--lb-border);
    background: var(--lb-glass);
    border-radius: var(--lb-radius-pill);
    padding: .3rem .75rem;
    font-size: .78rem;
    color: var(--lb-text-soft);
    line-height: 1;
    min-height: 28px;
    transition: border-color .15s var(--lb-ease), background .15s var(--lb-ease);
}
.chip:hover, .lb-chip:hover { border-color: var(--lb-brand-ring); }

.badge,
.lb-badge {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    border: 1px solid var(--lb-brand-ring);
    background: var(--lb-brand-soft);
    color: var(--lb-text);
    border-radius: var(--lb-radius-pill);
    padding: .28rem .72rem;
    font-size: .76rem;
    font-weight: 500;
}
.badge.ok, .lb-badge--ok { border-color: color-mix(in srgb, var(--lb-success) 45%, transparent); background: var(--lb-success-soft); color: var(--lb-success); }
.badge.warn, .lb-badge--warn { border-color: color-mix(in srgb, var(--lb-warning) 45%, transparent); background: var(--lb-warning-soft); color: var(--lb-warning); }
.badge.bad, .lb-badge--bad, .badge.danger { border-color: color-mix(in srgb, var(--lb-danger) 45%, transparent); background: var(--lb-danger-soft); color: var(--lb-danger); }
.badge small { color: var(--lb-text-muted); font-weight: 500; font-size: .7rem; }

.badge-wrap, .lb-badge-wrap { display: flex; flex-wrap: wrap; gap: .4rem; }

/* Ampel */
.ampel-dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    display: inline-block;
    flex-shrink: 0;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--lb-glass) 40%, transparent);
}
.ampel-dot.level-0 { background: var(--lb-danger); }
.ampel-dot.level-1 { background: var(--lb-warning); }
.ampel-dot.level-2 { background: var(--lb-success); }

/* ----- Forms ----- */
label { display: block; font-size: .8rem; font-weight: 500; color: var(--lb-text-soft); margin-bottom: .35rem; }

.lb-input,
.input,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="number"],
input[type="tel"],
input[type="url"],
textarea,
select {
    width: 100%;
    background: var(--lb-glass);
    border: 1px solid var(--lb-border);
    border-radius: var(--lb-radius-md);
    padding: .58rem .8rem;
    font: inherit;
    color: var(--lb-text);
    transition: border-color .15s var(--lb-ease), box-shadow .15s var(--lb-ease), background .15s var(--lb-ease);
    outline: none;
}
.lb-input:hover,
input:hover,
textarea:hover,
select:hover { border-color: var(--lb-border-strong); }

.lb-input:focus,
input:focus,
textarea:focus,
select:focus {
    border-color: var(--lb-brand);
    box-shadow: 0 0 0 3px var(--lb-brand-ring);
    background: var(--lb-surface-2);
}

textarea { min-height: 96px; resize: vertical; line-height: 1.5; }

/* Native dropdowns: solid surface + dropdown caret. The trigger gets a
   predictable opaque background so it never picks up the page gradient.
   The open option list is rendered natively by the OS — we set what we
   can; color-scheme (inherited from :root) drives the widget chrome. */
select {
    appearance: none;
    -webkit-appearance: none;
    background-color: var(--lb-surface-strong);
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='none' stroke='%238a9bb3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' d='M1 1l5 5 5-5'/></svg>");
    background-repeat: no-repeat;
    background-position: right .85rem center;
    padding-right: 2.2rem;
    color: var(--lb-text);
}
select:hover  { background-color: var(--lb-surface-strong); }
select:focus  { background-color: var(--lb-surface-strong); }
select:disabled {
    color: var(--lb-text-muted);
    background-color: var(--lb-surface-2);
    cursor: not-allowed;
    opacity: .7;
}
select option,
select optgroup {
    background-color: var(--lb-bg-flat);
    color: var(--lb-text);
    padding: .35rem .5rem;
}
select option:checked,
select option:hover {
    background-color: var(--lb-brand-soft);
    color: var(--lb-text);
}

.field { margin-bottom: 1rem; }

/* Inline error / helper */
.lb-error,
.error {
    background: var(--lb-danger-soft);
    border: 1px solid color-mix(in srgb, var(--lb-danger) 35%, transparent);
    border-radius: var(--lb-radius-sm);
    padding: .55rem .75rem;
    color: var(--lb-danger);
    font-size: .82rem;
    display: flex;
    align-items: center;
    gap: .5rem;
}
.lb-helper { color: var(--lb-text-muted); font-size: .78rem; margin-top: .35rem; }

/* ----- Progress / streak ----- */
.lb-progress,
.progressbar,
.progress {
    height: 10px;
    border-radius: var(--lb-radius-pill);
    background: color-mix(in srgb, var(--lb-text-muted) 22%, transparent);
    overflow: hidden;
    border: 1px solid var(--lb-border);
}
.lb-progress > span,
.progressbar > span,
.progress > span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--lb-success) 0%, var(--lb-brand) 100%);
    transition: width .6s var(--lb-ease);
}

.lb-streak {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    border: 1px solid color-mix(in srgb, var(--lb-warning) 40%, transparent);
    background: var(--lb-warning-soft);
    color: var(--lb-warning);
    border-radius: var(--lb-radius-pill);
    padding: .35rem .9rem;
    font-weight: 600;
    font-size: .85rem;
}
.lb-streak svg { width: 14px; height: 14px; }

/* ----- Avatar Call cards ----- */
.avatar-call-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: var(--lb-space-3);
}
.avatar-call-card {
    --lb-avatar-color: var(--lb-brand);
    --lb-avatar-color-soft: var(--lb-brand-soft);
    text-decoration: none;
    border-radius: var(--lb-radius-lg);
    border: 1px solid var(--lb-border);
    background:
        radial-gradient(circle at 20% 0%, var(--lb-avatar-color-soft) 0%, transparent 60%),
        var(--lb-surface);
    padding: 1rem .85rem .9rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .5rem;
    color: var(--lb-text);
    box-shadow: var(--lb-shadow-md);
    transition: transform .2s var(--lb-ease), box-shadow .2s var(--lb-ease), border-color .2s var(--lb-ease);
    position: relative;
    overflow: hidden;
}
.avatar-call-card:hover {
    transform: translateY(-3px);
    border-color: var(--lb-avatar-color);
    box-shadow: 0 22px 44px color-mix(in srgb, var(--lb-avatar-color) 22%, transparent);
    text-decoration: none;
}
.avatar-call-card[data-avatar="einstein"] { --lb-avatar-color: var(--lb-avatar-einstein); --lb-avatar-color-soft: var(--lb-avatar-einstein-soft); }
.avatar-call-card[data-avatar="bach"] { --lb-avatar-color: var(--lb-avatar-bach); --lb-avatar-color-soft: var(--lb-avatar-bach-soft); }
.avatar-call-card[data-avatar="beraterin"],
.avatar-call-card[data-avatar="brunette"] { --lb-avatar-color: var(--lb-avatar-beraterin); --lb-avatar-color-soft: var(--lb-avatar-beraterin-soft); }

.avatar-call-image {
    width: 92px;
    height: 92px;
    border-radius: 999px;
    object-fit: cover;
    border: 3px solid color-mix(in srgb, var(--lb-avatar-color) 35%, var(--lb-border));
    background: var(--lb-glass);
    box-shadow: 0 10px 24px color-mix(in srgb, var(--lb-avatar-color) 25%, transparent);
}
.avatar-call-name { font-weight: 700; font-size: .92rem; text-align: center; line-height: 1.25; font-family: var(--lb-font-display); }
.avatar-call-subtitle { font-size: .76rem; color: var(--lb-text-muted); text-align: center; }

/* "Call"-Indicator */
.avatar-call-card .lb-call-dot {
    position: absolute;
    top: .85rem;
    right: .9rem;
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: var(--lb-success);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--lb-success) 22%, transparent);
}

/* ===== Avatar-Studio — Premium Persona-Auswahl (Admin-Sprechstunde) ===== */
.lb-avatar-studio {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--lb-border);
    background:
        radial-gradient(125% 110% at 0% 0%, color-mix(in srgb, var(--lb-avatar-einstein) 11%, transparent) 0%, transparent 46%),
        radial-gradient(125% 110% at 100% 0%, color-mix(in srgb, var(--lb-avatar-bach) 11%, transparent) 0%, transparent 46%),
        radial-gradient(140% 130% at 50% 130%, color-mix(in srgb, var(--lb-avatar-beraterin) 13%, transparent) 0%, transparent 52%),
        var(--lb-surface);
}
.lb-avatar-studio__head { margin-bottom: 1.1rem; }
.lb-avatar-studio__title {
    margin: .5rem 0 .25rem;
    font-size: 1.35rem;
    font-family: var(--lb-font-display);
    letter-spacing: -.01em;
}
.lb-avatar-studio__sub {
    margin: 0;
    max-width: 56ch;
    font-size: .9rem;
    color: var(--lb-text-muted);
    line-height: 1.5;
}
.lb-avatar-studio__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: var(--lb-space-4);
}

.lb-avatar-pick {
    --lb-av: var(--lb-brand);
    --lb-av-soft: var(--lb-brand-soft);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: .45rem;
    padding: 1.5rem 1.1rem 1.15rem;
    border-radius: var(--lb-radius-lg);
    border: 1px solid var(--lb-border);
    background:
        radial-gradient(120% 80% at 50% -10%, var(--lb-av-soft) 0%, transparent 60%),
        var(--lb-glass);
    color: var(--lb-text);
    text-decoration: none;
    box-shadow: var(--lb-shadow-md);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: transform .25s var(--lb-ease), box-shadow .25s var(--lb-ease), border-color .25s var(--lb-ease);
    overflow: hidden;
    isolation: isolate;
}
.lb-avatar-pick::before {
    /* farbiger Lichtsaum am oberen Rand */
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--lb-av), transparent);
    opacity: .8;
}
.lb-avatar-pick:hover {
    transform: translateY(-5px);
    border-color: color-mix(in srgb, var(--lb-av) 55%, var(--lb-border));
    box-shadow: 0 26px 52px color-mix(in srgb, var(--lb-av) 24%, transparent);
    text-decoration: none;
    color: var(--lb-text);
}
.lb-avatar-pick[data-avatar="einstein"] { --lb-av: var(--lb-avatar-einstein); --lb-av-soft: var(--lb-avatar-einstein-soft); }
.lb-avatar-pick[data-avatar="bach"]     { --lb-av: var(--lb-avatar-bach);     --lb-av-soft: var(--lb-avatar-bach-soft); }
.lb-avatar-pick[data-avatar="beraterin"],
.lb-avatar-pick[data-avatar="brunette"] { --lb-av: var(--lb-avatar-beraterin); --lb-av-soft: var(--lb-avatar-beraterin-soft); }

.lb-avatar-pick__status {
    position: absolute;
    top: .9rem;
    right: 1rem;
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    font-size: .68rem;
    font-weight: 600;
    letter-spacing: .02em;
    text-transform: uppercase;
    color: var(--lb-success);
}
.lb-avatar-pick__status-dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: var(--lb-success);
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--lb-success) 60%, transparent);
    animation: lb-av-pulse 1.8s var(--lb-ease) infinite;
}

.lb-avatar-pick__portrait {
    position: relative;
    width: 116px;
    height: 116px;
    border-radius: 999px;
    display: grid;
    place-items: center;
    margin-bottom: .35rem;
}
.lb-avatar-pick__portrait::before {
    /* rotierender Farbring */
    content: "";
    position: absolute;
    inset: -5px;
    border-radius: 999px;
    background: conic-gradient(from 0deg, var(--lb-av), transparent 40%, var(--lb-av) 75%, transparent);
    opacity: .55;
    z-index: 0;
    animation: lb-av-spin 7s linear infinite;
}
.lb-avatar-pick:hover .lb-avatar-pick__portrait::before { opacity: .95; }
.lb-avatar-pick__portrait img {
    position: relative;
    z-index: 1;
    width: 104px;
    height: 104px;
    border-radius: 999px;
    object-fit: cover;
    border: 3px solid var(--lb-surface);
    background: var(--lb-surface-strong);
    box-shadow: 0 12px 28px color-mix(in srgb, var(--lb-av) 30%, transparent);
}
.lb-avatar-pick__name {
    font-family: var(--lb-font-display);
    font-weight: 700;
    font-size: 1.08rem;
    letter-spacing: -.01em;
}
.lb-avatar-pick__role {
    display: inline-block;
    padding: .12rem .6rem;
    border-radius: 999px;
    font-size: .72rem;
    font-weight: 600;
    color: var(--lb-av);
    background: var(--lb-av-soft);
    border: 1px solid color-mix(in srgb, var(--lb-av) 30%, transparent);
}
.lb-avatar-pick__tagline {
    font-size: .8rem;
    line-height: 1.45;
    color: var(--lb-text-muted);
    max-width: 30ch;
    margin: .15rem 0 .2rem;
}
.lb-avatar-pick__cta {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .5rem 1.05rem;
    border-radius: 999px;
    font-size: .82rem;
    font-weight: 700;
    color: var(--lb-av);
    background: transparent;
    border: 1.5px solid color-mix(in srgb, var(--lb-av) 45%, transparent);
    transition: background .2s var(--lb-ease), color .2s var(--lb-ease), transform .2s var(--lb-ease);
}
.lb-avatar-pick:hover .lb-avatar-pick__cta {
    background: var(--lb-av);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 10px 22px color-mix(in srgb, var(--lb-av) 38%, transparent);
}

@keyframes lb-av-spin { to { transform: rotate(360deg); } }
@keyframes lb-av-pulse {
    0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--lb-success) 60%, transparent); }
    70%  { box-shadow: 0 0 0 7px color-mix(in srgb, var(--lb-success) 0%, transparent); }
    100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--lb-success) 0%, transparent); }
}
@media (prefers-reduced-motion: reduce) {
    .lb-avatar-pick__portrait::before { animation: none; }
    .lb-avatar-pick__status-dot { animation: none; }
    .lb-avatar-pick { transition: none; }
}

/* ----- Lists ----- */
.class-list {
    list-style: none;
    margin: .6rem 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}
.class-list li {
    border: 1px solid var(--lb-border);
    border-radius: var(--lb-radius-md);
    background: var(--lb-glass);
    padding: .6rem .8rem;
    font-size: .85rem;
    display: flex;
    justify-content: space-between;
    gap: .7rem;
    align-items: center;
    transition: border-color .15s var(--lb-ease), background .15s var(--lb-ease);
}
.class-list li:hover { border-color: var(--lb-brand-ring); }
.class-list small { color: var(--lb-text-muted); }
.class-link, .subject-link {
    color: var(--lb-text);
    text-decoration: none;
    font-weight: 600;
}
.class-link:hover, .subject-link:hover { color: var(--lb-brand); text-decoration: none; }

.chip-wrap, .lb-chip-wrap { display: flex; flex-wrap: wrap; gap: .4rem; }

/* ----- Empty states ----- */
.lb-empty {
    text-align: center;
    padding: 2rem 1rem;
    border: 1px dashed var(--lb-border);
    border-radius: var(--lb-radius-lg);
    background: var(--lb-glass);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .5rem;
}
.lb-empty svg, .lb-empty .lb-empty-art {
    width: 56px;
    height: 56px;
    color: var(--lb-text-muted);
    opacity: .8;
}
.lb-empty h3 { font-size: 1rem; }
.lb-empty p { color: var(--lb-text-muted); max-width: 38ch; font-size: .88rem; }

/* ----- Skeleton loader ----- */
.lb-skeleton {
    background: linear-gradient(
        90deg,
        color-mix(in srgb, var(--lb-text-muted) 12%, transparent) 0%,
        color-mix(in srgb, var(--lb-text-muted) 22%, transparent) 50%,
        color-mix(in srgb, var(--lb-text-muted) 12%, transparent) 100%);
    background-size: 200% 100%;
    border-radius: var(--lb-radius-sm);
    animation: lb-shimmer 1.4s linear infinite;
}
@keyframes lb-shimmer {
    0% { background-position: 0% 0%; }
    100% { background-position: -200% 0%; }
}

/* ----- Toasts/alerts ----- */
.lb-alert {
    display: flex;
    align-items: flex-start;
    gap: .65rem;
    padding: .7rem .85rem;
    border-radius: var(--lb-radius-md);
    border: 1px solid var(--lb-border);
    background: var(--lb-glass);
    color: var(--lb-text);
    font-size: .88rem;
}
.lb-alert--info { border-color: var(--lb-brand-ring); background: var(--lb-brand-soft); }
.lb-alert--success { border-color: color-mix(in srgb, var(--lb-success) 35%, transparent); background: var(--lb-success-soft); }
.lb-alert--warning { border-color: color-mix(in srgb, var(--lb-warning) 35%, transparent); background: var(--lb-warning-soft); }
.lb-alert--danger { border-color: color-mix(in srgb, var(--lb-danger) 35%, transparent); background: var(--lb-danger-soft); }
.lb-alert svg { flex-shrink: 0; width: 18px; height: 18px; margin-top: 2px; }

/* ----- Onboarding-Checklist ----- */
.lb-checklist {
    display: grid;
    gap: .6rem;
    margin: 0;
    padding: 0;
    list-style: none;
}
.lb-checklist li {
    display: flex;
    align-items: center;
    gap: .65rem;
    padding: .65rem .85rem;
    border: 1px solid var(--lb-border);
    border-radius: var(--lb-radius-md);
    background: var(--lb-glass);
    color: var(--lb-text-soft);
}
.lb-checklist li.done {
    color: var(--lb-text-muted);
    background: var(--lb-success-soft);
    border-color: color-mix(in srgb, var(--lb-success) 35%, transparent);
    text-decoration: line-through;
}
.lb-checklist .lb-check-icon {
    width: 22px; height: 22px; flex-shrink: 0;
    border-radius: 999px;
    border: 2px solid var(--lb-border);
    display: inline-flex; align-items: center; justify-content: center;
    color: var(--lb-success);
}
.lb-checklist li.done .lb-check-icon { background: var(--lb-success); color: #fff; border-color: var(--lb-success); }
.lb-checklist svg { width: 14px; height: 14px; }
/* Regel-Variante: „erfüllt" heißt nicht „erledigt & durchgestrichen" —
   z. B. für Passwort-Anforderungen, die beim Tippen abhaken. */
.lb-checklist--rules li.done { text-decoration: none; color: var(--lb-text-soft); }

/* ----- Sub-Nav für Lehrkraft-Bereiche ----- */
.lb-subnav {
    position: sticky;
    top: 0;
    z-index: 25;
    display: flex;
    align-items: center;
    gap: var(--lb-space-2);
    padding: .5rem clamp(1rem, 2vw, 1.4rem);
    background: color-mix(in srgb, var(--lb-bg-flat) 92%, transparent);
    backdrop-filter: saturate(160%) blur(14px);
    -webkit-backdrop-filter: saturate(160%) blur(14px);
    border-bottom: 1px solid var(--lb-border);
    overflow-x: auto;
    scrollbar-width: thin;
}
.lb-subnav::-webkit-scrollbar { height: 4px; }
.lb-subnav__inner {
    display: flex;
    align-items: center;
    gap: var(--lb-space-2);
    width: min(1180px, 100%);
    margin-inline: auto;
    flex-wrap: wrap;
}
.lb-subnav__title {
    font-family: var(--lb-font-display);
    font-size: .72rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--lb-text-muted);
    font-weight: 600;
    padding: 0 .5rem;
    white-space: nowrap;
}
.lb-subnav a {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .45rem .85rem;
    border-radius: var(--lb-radius-pill);
    border: 1px solid transparent;
    color: var(--lb-text-soft);
    text-decoration: none;
    font-size: .85rem;
    font-weight: 500;
    line-height: 1.1;
    white-space: nowrap;
    transition: color .15s var(--lb-ease), background .15s var(--lb-ease), border-color .15s var(--lb-ease);
}
.lb-subnav a svg {
    width: 15px;
    height: 15px;
    stroke-width: 2;
}
.lb-subnav a:hover {
    color: var(--lb-text);
    background: var(--lb-glass);
    text-decoration: none;
}
.lb-subnav a[aria-current="page"],
.lb-subnav a.is-active {
    color: var(--lb-text);
    background: var(--lb-brand-soft);
    border-color: var(--lb-brand-ring);
    font-weight: 600;
}

/* ----- Stat-/KPI-Karten ----- */
.lb-stat-card {
    background: var(--lb-surface);
    border: 1px solid var(--lb-border);
    border-radius: var(--lb-radius-lg);
    padding: 1rem 1.1rem;
    box-shadow: var(--lb-shadow-sm);
    display: flex;
    flex-direction: column;
    gap: .35rem;
    position: relative;
    overflow: hidden;
}
.lb-stat-card__label {
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--lb-text-muted);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: .35rem;
}
.lb-stat-card__value {
    font-family: var(--lb-font-display);
    font-size: 1.85rem;
    font-weight: 600;
    letter-spacing: -.024em;
    color: var(--lb-text);
    line-height: 1.05;
}
.lb-stat-card__sub {
    color: var(--lb-text-muted);
    font-size: .78rem;
}
.lb-stat-card--success { border-color: color-mix(in srgb, var(--lb-success) 35%, transparent); }
.lb-stat-card--success .lb-stat-card__value { color: var(--lb-success); }
.lb-stat-card--warning { border-color: color-mix(in srgb, var(--lb-warning) 35%, transparent); }
.lb-stat-card--warning .lb-stat-card__value { color: var(--lb-warning); }
.lb-stat-card--danger  { border-color: color-mix(in srgb, var(--lb-danger) 35%, transparent); }
.lb-stat-card--danger .lb-stat-card__value { color: var(--lb-danger); }

/* ----- Tabs -----
   Funktioniert für <button> (JS-Tabs) und <a> (Seiten-Tabs, z. B. Mediathek). */
.lb-tabs {
    display: flex;
    gap: .25rem;
    border-bottom: 1px solid var(--lb-border);
    margin-bottom: 1rem;
    flex-wrap: wrap;
}
.lb-tabs button,
.lb-tabs a {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    background: transparent;
    border: none;
    color: var(--lb-text-muted);
    font: inherit;
    font-weight: 600;
    padding: .55rem .9rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    text-decoration: none;
    transition: color .15s, border-color .15s;
}
.lb-tabs button:hover,
.lb-tabs a:hover { color: var(--lb-text); text-decoration: none; }
.lb-tabs button[aria-selected="true"],
.lb-tabs button.is-active,
.lb-tabs a[aria-current="page"],
.lb-tabs a.is-active {
    color: var(--lb-brand);
    border-bottom-color: var(--lb-brand);
}
.lb-tab-panel { display: none; }
.lb-tab-panel.is-active { display: block; }

/* ----- Schüler-Dashboard: Komponenten ----- */

/* Today-Grid: Today-Karte + Avatar-Kachel nebeneinander */
.lb-today-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(220px, .85fr);
    gap: var(--lb-space-4);
    align-items: stretch;
}
.lb-today-grid > .lb-today-card { min-width: 0; }
@media (max-width: 880px) {
    .lb-today-grid { grid-template-columns: 1fr; }
}

/* Großes Avatar-Hero-Tile (Einstein-Anruf) */
.lb-avatar-hero {
    --lb-ah-color: var(--lb-avatar-einstein);
    --lb-ah-color-soft: var(--lb-avatar-einstein-soft);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    text-decoration: none;
    color: var(--lb-text);
    border-radius: var(--lb-radius-xl);
    border: 1px solid color-mix(in srgb, var(--lb-ah-color) 40%, var(--lb-border));
    background:
        radial-gradient(circle at 50% -10%, var(--lb-ah-color-soft) 0%, transparent 65%),
        linear-gradient(180deg, var(--lb-surface), var(--lb-surface-2));
    overflow: hidden;
    box-shadow: var(--lb-shadow-md);
    transition: transform .2s var(--lb-ease), box-shadow .2s var(--lb-ease), border-color .2s var(--lb-ease);
    min-height: 340px;
    padding: 1.1rem 1.1rem 1.2rem;
    text-align: center;
}
.lb-avatar-hero[data-avatar="einstein"]    { --lb-ah-color: var(--lb-avatar-einstein);    --lb-ah-color-soft: var(--lb-avatar-einstein-soft); }
.lb-avatar-hero[data-avatar="bach"]        { --lb-ah-color: var(--lb-avatar-bach);        --lb-ah-color-soft: var(--lb-avatar-bach-soft); }
.lb-avatar-hero[data-avatar="brunette"]    { --lb-ah-color: var(--lb-avatar-beraterin);   --lb-ah-color-soft: var(--lb-avatar-beraterin-soft); }
.lb-avatar-hero[data-avatar="beraterin"]   { --lb-ah-color: var(--lb-avatar-beraterin);   --lb-ah-color-soft: var(--lb-avatar-beraterin-soft); }

.lb-avatar-hero:hover {
    transform: translateY(-3px);
    border-color: var(--lb-ah-color);
    box-shadow: 0 24px 48px color-mix(in srgb, var(--lb-ah-color) 25%, transparent);
    text-decoration: none;
}

.lb-avatar-hero__live {
    position: absolute;
    top: .85rem;
    right: .9rem;
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .2rem .55rem .2rem .4rem;
    border-radius: var(--lb-radius-pill);
    background: var(--lb-surface-strong);
    border: 1px solid color-mix(in srgb, var(--lb-success) 40%, transparent);
    font-size: .65rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--lb-success);
    z-index: 2;
}
.lb-avatar-hero__live-dot {
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: var(--lb-success);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--lb-success) 25%, transparent);
    animation: lb-pulse-ring 1.6s var(--lb-ease) infinite;
}

.lb-avatar-hero__img {
    width: 168px;
    height: 168px;
    border-radius: 999px;
    object-fit: cover;
    border: 4px solid color-mix(in srgb, var(--lb-ah-color) 35%, var(--lb-surface));
    box-shadow: 0 12px 28px color-mix(in srgb, var(--lb-ah-color) 22%, transparent);
    background: var(--lb-surface);
    margin: .5rem 0 1rem;
}
.lb-avatar-hero__name {
    font-family: var(--lb-font-display);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -.012em;
    line-height: 1.15;
}
.lb-avatar-hero__sub {
    margin-top: .25rem;
    color: var(--lb-text-muted);
    font-size: .82rem;
    line-height: 1.3;
    max-width: 22ch;
}
.lb-avatar-hero__cta {
    margin-top: 1rem;
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    padding: .6rem 1.1rem;
    border-radius: var(--lb-radius-pill);
    background: linear-gradient(135deg, var(--lb-ah-color), color-mix(in srgb, var(--lb-ah-color) 70%, #ffffff));
    color: #0f172a;
    font-weight: 700;
    font-size: .9rem;
    box-shadow: 0 8px 20px color-mix(in srgb, var(--lb-ah-color) 30%, transparent);
    transition: transform .15s var(--lb-ease);
}
.lb-avatar-hero:hover .lb-avatar-hero__cta { transform: translateY(-1px); }
.lb-avatar-hero__cta svg { width: 16px; height: 16px; }

@media (max-width: 880px) {
    .lb-avatar-hero { min-height: auto; }
    .lb-avatar-hero__img { width: 140px; height: 140px; margin-top: .25rem; }
}


/* Ausklapp-Karte (Advance Organizer) – nutzt natives <details> */
.lb-organizer-card {
    margin-top: var(--lb-space-4);
    border: 1px solid color-mix(in srgb, var(--lb-warning) 35%, var(--lb-border));
    border-radius: var(--lb-radius-md);
    background: color-mix(in srgb, var(--lb-warning) 6%, var(--lb-glass));
    overflow: hidden;
}
.lb-organizer-card > summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: .55rem;
    padding: .65rem .85rem;
    font-family: var(--lb-font-display);
    font-weight: 600;
    font-size: .9rem;
    color: var(--lb-text);
}
.lb-organizer-card > summary::-webkit-details-marker { display: none; }
.lb-organizer-card > summary > i[data-lucide]:first-child {
    color: var(--lb-warning);
    width: 16px;
    height: 16px;
}
.lb-organizer-card > summary .lb-organizer-chev {
    margin-left: auto;
    width: 16px;
    height: 16px;
    color: var(--lb-text-muted);
    transition: transform .2s var(--lb-ease);
}
.lb-organizer-card[open] > summary .lb-organizer-chev { transform: rotate(180deg); }
.lb-organizer-card > .lb-organizer-list {
    margin: 0;
    padding: .25rem 1.1rem .85rem 2.6rem;
    list-style: none;
    display: grid;
    gap: .35rem;
}
.lb-organizer-card > .lb-organizer-list li {
    position: relative;
    color: var(--lb-text);
    font-size: .88rem;
    line-height: 1.45;
    padding-left: .25rem;
}
.lb-organizer-card > .lb-organizer-list li::before {
    content: "";
    position: absolute;
    left: -1.25rem;
    top: .55em;
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: var(--lb-warning);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--lb-warning) 18%, transparent);
}

/* Phasen-Pill (Lernen / Üben / Quiz) – kompakte Status-Chips */
.lb-phase-pill {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    border: 1px solid var(--lb-border);
    background: var(--lb-glass);
    color: var(--lb-text-muted);
    border-radius: var(--lb-radius-pill);
    padding: .35rem .85rem;
    font-size: .8rem;
    font-weight: 600;
    line-height: 1;
}
.lb-phase-pill svg { width: 14px; height: 14px; }
.lb-phase-pill.is-done {
    border-color: color-mix(in srgb, var(--lb-success) 40%, transparent);
    background: var(--lb-success-soft);
    color: var(--lb-success);
}

/* Fach-Kachel (Subject-Tile) – im "Deine Fächer"-Block */
.lb-subject-tile {
    display: flex;
    flex-direction: column;
    gap: .25rem;
    padding: .8rem .9rem;
    border: 1px solid var(--lb-border);
    border-radius: var(--lb-radius-md);
    background: var(--lb-glass);
    text-decoration: none;
    color: var(--lb-text);
    transition: transform .15s var(--lb-ease), border-color .15s var(--lb-ease), background .15s var(--lb-ease);
    position: relative;
    overflow: hidden;
}
.lb-subject-tile:hover {
    transform: translateY(-1px);
    border-color: var(--lb-brand-ring);
    background: var(--lb-brand-soft);
    text-decoration: none;
}
.lb-subject-tile.is-current {
    border-color: var(--lb-brand);
    background: var(--lb-brand-soft);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--lb-brand) 12%, transparent);
}
.lb-subject-tile__name {
    font-family: var(--lb-font-display);
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: -.01em;
}
.lb-subject-tile__class {
    font-size: .76rem;
    color: var(--lb-text-muted);
}
.lb-subject-tile__badge {
    position: absolute;
    top: .55rem;
    right: .65rem;
    font-size: .6rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--lb-brand);
    background: var(--lb-surface-strong);
    border-radius: var(--lb-radius-pill);
    padding: .15rem .55rem;
    border: 1px solid var(--lb-brand-ring);
}

/* ----- Iframe-Frame (apps.php) ----- */
.frame-wrap {
    flex: 1 1 auto;
    border: 1px solid var(--lb-border);
    border-radius: var(--lb-radius-lg);
    overflow: hidden;
    background: var(--lb-surface-strong);
    box-shadow: var(--lb-shadow-md);
    min-height: 0;
    position: relative;
}
.frame-wrap.loading::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, var(--lb-glass), var(--lb-overlay));
    z-index: 2;
}
.frame-wrap.loading::after {
    content: "";
    position: absolute;
    width: 52px;
    height: 52px;
    border-radius: 999px;
    border: 4px solid var(--lb-border-strong);
    border-top-color: var(--lb-brand);
    animation: lb-spin .9s linear infinite;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    box-shadow: var(--lb-shadow-md);
}
.frame-wrap iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}
@keyframes lb-spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ----- Decorative orbs (für minimalistische Seiten) ----- */
.lb-orb {
    position: fixed;
    border-radius: 999px;
    filter: blur(60px);
    opacity: .35;
    pointer-events: none;
    z-index: 0;
}
.lb-orb--one { width: 320px; height: 320px; background: var(--lb-brand); top: -80px; right: -40px; }
.lb-orb--two { width: 280px; height: 280px; background: var(--lb-avatar-bach); bottom: -90px; left: -40px; opacity: .25; }

/* ----- Confetti / Celebration ----- */
@keyframes lb-pulse-ring {
    0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--lb-success) 50%, transparent); }
    70% { box-shadow: 0 0 0 14px color-mix(in srgb, var(--lb-success) 0%, transparent); }
    100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--lb-success) 0%, transparent); }
}
.lb-pulse { animation: lb-pulse-ring 1.6s var(--lb-ease) infinite; }

/* ----- Responsive Helpers ----- */
.lb-only-mobile { display: none; }
@media (max-width: 720px) {
    .lb-only-mobile { display: initial; }
    .lb-only-desktop { display: none; }
    .lb-header { padding-inline: 1rem; flex-wrap: nowrap; }
    .brand-pill, .lb-brand { padding: .3rem .8rem .3rem .35rem; min-width: 0; flex-shrink: 1; }
    .brand-pill img, .lb-brand img, .lb-brand .lb-brand-mark { width: 28px; height: 28px; }
    .brand-pill-text strong, .lb-brand-text strong { font-size: .85rem; }
    /* Unterzeile („Powered by …") kostet auf schmalen Screens nur Platz */
    .brand-pill-text span, .lb-brand-text span { display: none; }
    .lb-header-actions, .header-actions, .top-actions { flex-wrap: nowrap; gap: .35rem; }
    /* Logout/Zurück werden zu reinen Icons (Label ist ein Textknoten →
       über font-size:0 ausblenden), User-Pill kürzt sich per Ellipsis */
    .logout, .lb-back, .back-button { font-size: 0; gap: 0; }
    .logout { padding: .4rem .5rem; }
    .logout svg { width: 18px; height: 18px; }
    .lb-back, .back-button { padding: .42rem .6rem; }
    .lb-back svg, .back-button svg { width: 16px; height: 16px; }
    .user-pill { max-width: 34vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}

/* Print styles minimal */
@media print {
    .lb-header, .theme-toggle, .lb-iconbtn, .logout, .back-button { display: none !important; }
    body { background: white !important; color: #000 !important; }
    .lb-card, .card, .panel { box-shadow: none; border: 1px solid #ccc; }
}

/* =============================================================================
   Klassenstufen-Layer — body[data-band]
   Vier UI-Bänder (1-4, 5-7, 8-10, 11-13) skalieren Schrift, Trefferflächen
   und Tonalität. Wird serverseitig aus der Klassenstufe gesetzt; ohne
   Attribut gilt das bisherige Standard-Layout (entspricht 8-10).
============================================================================= */
body[data-band="1-4"] {
    font-size: 17.5px;
}
body[data-band="1-4"] .lb-btn,
body[data-band="1-4"] .btn {
    padding: .75rem 1.3rem;
    font-size: 1rem;
    min-height: 48px;
}
body[data-band="1-4"] .lb-btn--sm { padding: .6rem 1rem; font-size: .95rem; min-height: 44px; }
body[data-band="1-4"] .lb-input,
body[data-band="1-4"] input[type="text"],
body[data-band="1-4"] input[type="password"],
body[data-band="1-4"] select,
body[data-band="1-4"] textarea {
    padding: .75rem 1rem;
    font-size: 1.05rem;
}
/* Versalien erschweren Leseanfängern die Worterkennung → normale Schreibung */
body[data-band="1-4"] .lb-eyebrow,
body[data-band="1-4"] .summary-card small,
body[data-band="1-4"] .lb-stat-card__label,
body[data-band="1-4"] .lb-subnav__title {
    text-transform: none;
    letter-spacing: .02em;
    font-size: .85rem;
}
body[data-band="1-4"] .lb-text-sm { font-size: .95rem; }
body[data-band="1-4"] .lb-text-xs { font-size: .85rem; }
body[data-band="1-4"] .chip,
body[data-band="1-4"] .lb-chip,
body[data-band="1-4"] .lb-phase-pill {
    font-size: .9rem;
    min-height: 40px;
    padding: .45rem 1rem;
}

body[data-band="5-7"] {
    font-size: 16px;
}
body[data-band="5-7"] .lb-btn,
body[data-band="5-7"] .btn {
    min-height: 44px;
}

/* 11-13: etwas dichter, nüchterner — Erwachsenen-Register */
body[data-band="11-13"] .lb-hero p { font-size: .95rem; }

/* =============================================================================
   Tabelle — für Lehrkraft-Listen (Klassenüberblick, Audits)
============================================================================= */
.lb-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--lb-border);
    border-radius: var(--lb-radius-lg);
    background: var(--lb-surface);
    box-shadow: var(--lb-shadow-sm);
}
.lb-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .88rem;
}
.lb-table th {
    text-align: left;
    font-size: .68rem;
    text-transform: uppercase;
    letter-spacing: .1em;
    font-weight: 600;
    color: var(--lb-text-muted);
    padding: .65rem .9rem;
    border-bottom: 1px solid var(--lb-border);
    white-space: nowrap;
}
.lb-table td {
    padding: .6rem .9rem;
    border-bottom: 1px solid var(--lb-divider);
    color: var(--lb-text-soft);
    vertical-align: middle;
    font-variant-numeric: tabular-nums;
}
.lb-table tbody tr:last-child td { border-bottom: none; }
.lb-table tbody tr {
    transition: background .12s var(--lb-ease);
}
.lb-table tbody tr:hover { background: var(--lb-brand-soft); }
.lb-table tbody tr.is-selected {
    background: var(--lb-brand-soft);
    box-shadow: inset 3px 0 0 var(--lb-brand);
}
.lb-table .lb-table-name {
    font-weight: 600;
    color: var(--lb-text);
    white-space: nowrap;
}
.lb-table .lb-table-sub {
    display: block;
    font-size: .72rem;
    color: var(--lb-text-muted);
    font-weight: 400;
}
.lb-table td.is-num { text-align: right; }
.lb-table th.is-num { text-align: right; }

/* =============================================================================
   Toast — unaufdringliches Feedback statt alert()
   JS-API: LernBuddy.toast('Gespeichert.', 'success' | 'error' | 'info')
============================================================================= */
.lb-toast-region {
    position: fixed;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9998;
    display: flex;
    flex-direction: column;
    gap: .5rem;
    align-items: center;
    pointer-events: none;
    width: min(480px, calc(100vw - 2rem));
}
.lb-toast {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    padding: .65rem 1rem;
    border-radius: var(--lb-radius-md);
    border: 1px solid var(--lb-border);
    background: var(--lb-surface-strong);
    color: var(--lb-text);
    font-size: .9rem;
    box-shadow: var(--lb-shadow-lg);
    pointer-events: auto;
    animation: lb-toast-in .25s var(--lb-ease);
    max-width: 100%;
}
.lb-toast--success { border-color: color-mix(in srgb, var(--lb-success) 45%, transparent); }
.lb-toast--success .lb-toast-dot { background: var(--lb-success); }
.lb-toast--error { border-color: color-mix(in srgb, var(--lb-danger) 45%, transparent); }
.lb-toast--error .lb-toast-dot { background: var(--lb-danger); }
.lb-toast--info .lb-toast-dot { background: var(--lb-brand); }
.lb-toast-dot {
    width: 8px; height: 8px; border-radius: 999px; flex-shrink: 0;
    background: var(--lb-brand);
}
.lb-toast.is-leaving { opacity: 0; transform: translateY(6px); transition: opacity .25s, transform .25s; }
@keyframes lb-toast-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* =============================================================================
   Ampel — echte Drei-Punkt-Ampel statt Badge-Text „Ampel 0"
   Markup: <span class="lb-ampel" data-level="0|1|2" role="img" aria-label="…">
             <i></i><i></i><i></i>
           </span>
   Level: 0 = rot (noch unsicher), 1 = gelb (auf dem Weg), 2 = grün (sicher)
============================================================================= */
.lb-ampel {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: .3rem .5rem;
    border-radius: var(--lb-radius-pill);
    border: 1px solid var(--lb-border);
    background: var(--lb-glass);
    line-height: 0;
}
.lb-ampel i {
    width: 9px;
    height: 9px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--lb-text-muted) 25%, transparent);
    transition: background .2s var(--lb-ease), box-shadow .2s var(--lb-ease);
}
.lb-ampel[data-level="0"] i:nth-child(1) {
    background: var(--lb-danger);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--lb-danger) 22%, transparent);
}
.lb-ampel[data-level="1"] i:nth-child(2) {
    background: var(--lb-warning);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--lb-warning) 22%, transparent);
}
.lb-ampel[data-level="2"] i:nth-child(3) {
    background: var(--lb-success);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--lb-success) 22%, transparent);
}

/* Neutrale Zustands-Badge — für „noch keine Daten" (nie rot ohne Befund) */
.lb-badge--neutral {
    border-color: var(--lb-border);
    background: var(--lb-glass);
    color: var(--lb-text-muted);
}