:root {
    --akzent: #6d28d9;
    --akzent-dunkel: #5b21b6;
    --hintergrund: #f7f6fb;
    --text: #1f2430;
    --grau: #6b7280;
    --rand: #e3e1ee;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background: var(--hintergrund);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main { flex: 1; max-width: 1100px; margin: 0 auto; padding: 24px 16px; width: 100%; }

.topbar { background: #fff; border-bottom: 1px solid var(--rand); }
.topbar-inner {
    max-width: 1100px; margin: 0 auto; padding: 12px 16px;
    display: flex; justify-content: space-between; align-items: center;
}
.logo { font-weight: 700; font-size: 1.2rem; color: var(--text); text-decoration: none; }
.logo span { color: var(--akzent); }
.topbar nav { display: flex; align-items: center; gap: 12px; }
.user-name { color: var(--grau); font-size: 0.9rem; }

footer { text-align: center; padding: 16px; color: var(--grau); font-size: 0.8rem; }
footer a { color: var(--grau); }

.btn {
    display: inline-block; padding: 8px 14px; border-radius: 8px;
    border: 1px solid var(--rand); background: #fff; color: var(--text);
    text-decoration: none; font-size: 0.9rem; cursor: pointer;
}
.btn:hover { border-color: var(--akzent); color: var(--akzent); }
.btn-primaer { background: var(--akzent); border-color: var(--akzent); color: #fff; }
.btn-primaer:hover { background: var(--akzent-dunkel); color: #fff; }
.btn-klein { padding: 5px 10px; font-size: 0.85rem; }

/* Login */
.login-box {
    max-width: 380px; margin: 48px auto; background: #fff;
    border: 1px solid var(--rand); border-radius: 12px; padding: 32px;
}
.login-box h1 { margin-top: 0; }
.login-box form { display: flex; flex-direction: column; gap: 8px; }
.login-box label { font-size: 0.85rem; color: var(--grau); margin-top: 8px; }
.login-box input {
    padding: 10px; border: 1px solid var(--rand); border-radius: 8px;
    font-size: 1rem;
}
.login-box button { margin-top: 16px; }
.hinweis { color: var(--grau); font-size: 0.9rem; }
.hinweis.klein { font-size: 0.8rem; text-align: center; margin-top: 16px; }
.fehler {
    background: #fdecec; color: #b42318; border: 1px solid #f5c6c6;
    border-radius: 8px; padding: 10px; font-size: 0.9rem; margin-bottom: 8px;
}

/* Bibliothek */
.grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px; margin-top: 16px;
}
.kachel {
    background: #fff; border: 1px solid var(--rand); border-radius: 12px;
    overflow: hidden; display: flex; flex-direction: column;
}
.kachel img { width: 100%; aspect-ratio: 3/4; object-fit: cover; display: block; }
.cover-platzhalter {
    aspect-ratio: 3/4; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--akzent), #9333ea);
    color: #fff; font-weight: 600; padding: 12px; text-align: center;
}
.kachel-info { padding: 12px; }
.kachel-info h2 { font-size: 1rem; margin: 0 0 8px; }
.badge {
    display: inline-block; background: var(--rand); color: var(--grau);
    font-size: 0.7rem; padding: 2px 8px; border-radius: 999px; margin-bottom: 8px;
}
.aktionen { display: flex; gap: 8px; flex-wrap: wrap; }

/* Viewer */
.viewer-kopf {
    display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
    margin-bottom: 12px;
}
.viewer-kopf h1 { font-size: 1.1rem; margin: 0; flex: 1; }
.viewer-steuerung { display: flex; align-items: center; gap: 6px; }
#seitenanzeige { font-size: 0.9rem; color: var(--grau); min-width: 60px; text-align: center; }
#viewer-container {
    display: flex; justify-content: safe center; align-items: flex-start; background: #2a2733;
    border-radius: 12px; padding: 16px; overflow: auto; max-height: 82vh;
}
#pdf-canvas { box-shadow: 0 4px 24px rgba(0,0,0,0.4); }

#seiten-eingabe {
    width: 56px; padding: 5px 6px; border: 1px solid var(--rand);
    border-radius: 8px; font-size: 0.85rem; text-align: center;
}
#seiten-gesamt { font-size: 0.9rem; color: var(--grau); }
#seiten-eingabe { width: 56px; padding: 5px 6px; border: 1px solid var(--rand); border-radius: 8px; font-size: 0.85rem; text-align: center; }
#seiten-gesamt { font-size: 0.9rem; color: var(--grau); }