/* Sachkunde §34i – Innenseiten, abgestimmt auf das Design der Startseite (landing.css) */
@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:wght@500;600&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@500&display=swap');

:root {
    /* Farben aus landing.css übernommen */
    --navy:       #16213a;
    --navy-2:     #1f2f52;
    --gold:       #b8891f;
    --gold-soft:  #f6ecd2;
    --primary:      var(--navy-2);
    --primary-dark: var(--navy);
    --accent:       var(--gold);
    --bg:    #f4f5f8;
    --card:  #ffffff;
    --text:  #1c2430;
    --muted: #5c6673;
    --border:#dfe3ea;
    --ok:     #2b6e3f;
    --ok-bg:  #e7f2ea;
    --bad:    #a33b32;
    --bad-bg: #f7e9e7;
    --radius: 10px;
    --serif: "Source Serif 4", "Iowan Old Style", Georgia, "Times New Roman", serif;
    --sans:  "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --mono:  "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: var(--sans);
    background: var(--bg); color: var(--text); line-height: 1.55; font-size: 16px;
    display: flex; flex-direction: column; min-height: 100vh;
}
a { color: var(--navy-2); }

h1, h2, h3 { font-family: var(--serif); letter-spacing: -.01em; color: var(--text); }
h1 { font-size: 1.9rem; font-weight: 500; line-height: 1.2; margin: 0 0 1rem; }
h2 { font-size: 1.35rem; font-weight: 500; margin: 0 0 .6rem; }
h3 { font-size: 1.1rem; font-weight: 600; margin: 1.2rem 0 .4rem; }
p { margin: .4rem 0 .8rem; }
.muted { color: var(--muted); }
.small { font-size: .88rem; }
.big { font-size: 1.4rem; font-weight: 600; }
.eyebrow { font-family: var(--mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: .8rem; }

/* ---------- Layout ---------- */
.topbar {
    background: var(--navy); color: #fff;
    display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .5rem;
    padding: 0 1.5rem; min-height: 66px;
}
.topbar .brand {
    color: #fff; text-decoration: none; font-family: var(--serif);
    font-weight: 600; font-size: 1.15rem; display: inline-flex; align-items: center; gap: .6rem;
}
.topbar .brand::before {
    content: "§34i"; border: 2px solid var(--gold); color: var(--gold);
    font-family: var(--serif); font-weight: 700; font-size: 1rem;
    padding: .05rem .45rem; border-radius: 4px; line-height: 1.3;
}
.topbar nav { display: flex; gap: 1.4rem; align-items: center; flex-wrap: wrap; }
.topbar nav a { color: #fff; text-decoration: none; font-weight: 500; font-size: .95rem; }
.topbar nav a:hover { text-decoration: underline; }
.topbar .user-name { opacity: .75; font-size: .85rem; padding-left: .9rem; border-left: 1px solid rgba(255,255,255,.3); }

.container { flex: 1; width: 100%; max-width: 900px; margin: 0 auto; padding: 2rem 1.25rem 3rem; }
.container.wide { max-width: 1080px; }

.footer {
    text-align: center; color: var(--muted); font-size: .85rem;
    padding: 1.5rem 1.25rem; border-top: 1px solid var(--border); background: #fff;
}
.footer span { display: block; max-width: 1080px; margin: 0 auto; }

/* ---------- Karten ---------- */
.card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 1.3rem 1.5rem; margin-bottom: 1.2rem;
}
.card.narrow { max-width: 480px; margin-left: auto; margin-right: auto; box-shadow: 0 8px 28px rgba(22,33,58,.08); }
.card.highlight { border-color: var(--gold); background: #fffdf7; }
.breadcrumb { font-family: var(--mono); font-size: .8rem; color: var(--muted); margin-bottom: .6rem; }

/* ---------- Buttons & Formulare ---------- */
.btn-primary, .btn-secondary, .btn-link, button {
    display: inline-block; font: 500 1rem var(--sans); cursor: pointer; border-radius: 6px;
    text-decoration: none; padding: .6rem 1.2rem; border: 1px solid transparent; line-height: 1.3;
}
.btn-primary { background: var(--gold); color: var(--navy); }
.btn-primary:hover { background: #a67a18; }
.btn-secondary { background: #fff; color: var(--text); border-color: #b9c0cb; }
.btn-secondary:hover { background: #f1f3f6; }
.btn-link { background: none; color: var(--muted); padding: .3rem .4rem; text-decoration: underline; border: 0; }
button.danger { background: var(--bad); color: #fff; }

form label { display: block; margin-bottom: .9rem; font-weight: 500; }
form input[type=text], form input[type=email], form input[type=password], form input[type=number], form select, form textarea {
    display: block; width: 100%; margin-top: .35rem; padding: .6rem .75rem; font: inherit;
    border: 1px solid var(--border); border-radius: 6px; background: #fff; color: var(--text);
}
form input:focus, form select:focus, form textarea:focus { outline: 2px solid var(--navy-2); outline-offset: 1px; border-color: var(--navy-2); }
form textarea { min-height: 120px; font-family: inherit; }
form textarea.code { font-family: var(--mono); font-size: .9rem; min-height: 320px; }
form.inline { display: inline; }
form .row { display: flex; gap: 1rem; flex-wrap: wrap; }
form .row > label { flex: 1 1 200px; }

.alert { padding: .75rem 1rem; border-radius: 6px; margin-bottom: 1rem; }
.alert-error { background: var(--bad-bg); color: var(--bad); border: 1px solid #e3c3bf; }
.alert-success { background: var(--ok-bg); color: var(--ok); border: 1px solid #bcdcc5; }

/* ---------- Hero / Login ---------- */
.hero { display: grid; grid-template-columns: 1.3fr 1fr; gap: 2rem; align-items: start; margin-top: 1rem; }
.hero h1 { font-size: 2.2rem; }
.feature-list { padding-left: 1.2rem; }
.feature-list li { margin-bottom: .4rem; }
@media (max-width: 760px) { .hero { grid-template-columns: 1fr; } }

/* ---------- Fortschritt ---------- */
.progress-bar { background: #e2e5eb; border-radius: 999px; height: 12px; overflow: hidden; margin: .4rem 0; }
.progress-bar > div { background: var(--ok); height: 100%; transition: width .3s; }
.progress-bar.slim { height: 6px; }
.inline-bar { display: inline-block; width: 120px; vertical-align: middle; margin: 0 .4rem 0 0; }
.result-summary.passed .progress-bar > div { background: var(--ok); }
.result-summary.failed .progress-bar > div { background: var(--bad); }

/* ---------- Dashboard ---------- */
.module h2 { border-bottom: 2px solid var(--navy); padding-bottom: .4rem; }
.topic-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: .9rem; }
.topic { border: 1px solid var(--border); border-radius: 8px; padding: .9rem 1rem; background: #fafbfc; display: flex; flex-direction: column; }
.topic-head { display: flex; gap: .5rem; align-items: baseline; flex-wrap: wrap; margin-bottom: .4rem; }
.topic-code { font-family: var(--mono); background: var(--navy); color: #fff; font-size: .75rem; padding: .1rem .45rem; border-radius: 4px; }
.lesson-list { list-style: none; padding: 0; margin: 0 0 .6rem; flex: 1; }
.lesson-list li { padding: .2rem 0; }
.lesson-list a { text-decoration: none; }
.lesson-list a:hover { text-decoration: underline; }
.topic-actions { display: flex; gap: .7rem; align-items: center; flex-wrap: wrap; }
.topic-actions .btn-secondary { padding: .35rem .8rem; font-size: .9rem; }

.learn-stats { display: flex; gap: .6rem; flex-wrap: wrap; margin: .8rem 0 1rem; }
.learn-stat { background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: .6rem .9rem; min-width: 118px; }
.learn-stat b { display: block; font-family: var(--serif); font-size: 1.5rem; color: var(--navy); line-height: 1.15; }
.learn-stat span { font-size: .82rem; color: var(--muted); }
.learn-stat.weak b { color: var(--bad); }
.learn-stat.strong b { color: var(--ok); }
.weak-topics { list-style: none; padding: 0; margin: 0; }
.weak-topics li { display: flex; justify-content: space-between; gap: 1rem; padding: .6rem 0; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.weak-topics li:last-child { border-bottom: 0; }

/* ---------- Lektion ---------- */
.lesson-content { font-size: 1.02rem; }
.lesson-content p { margin: 0 0 .9rem; }
.lesson-content ul { margin: 0 0 1rem 1.2rem; }
.lesson-content li { margin-bottom: .25rem; }
.lesson-content .keywords { margin-top: 1.5rem; padding: 1rem 1.2rem; background: var(--gold-soft); border-left: 4px solid var(--gold); border-radius: 6px; font-size: .95rem; }
.lesson-actions { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.lesson-nav { display: flex; justify-content: space-between; }

/* ---------- Fragen ---------- */
.question .q-head { font-family: var(--serif); font-size: 1.1rem; font-weight: 600; margin: 0 0 .5rem; }
.question .q-meta { margin: 0 0 .2rem; }
.hint { color: var(--muted); font-size: .88rem; margin: 0 0 .6rem; }
.options { list-style: none; padding: 0; margin: 0; }
.option { padding: .55rem .8rem; border: 1px solid var(--border); border-radius: 6px; margin-bottom: .5rem; background: #fff; }
.option label { display: flex; gap: .6rem; align-items: flex-start; font-weight: 400; margin: 0; cursor: pointer; }
.option label input { margin-top: .3rem; }
.option .letter { font-weight: 600; color: var(--navy-2); min-width: 1rem; }
.option.opt-correct { background: var(--ok-bg); border-color: #bcdcc5; }
.option.opt-wrong { background: var(--bad-bg); border-color: #e3c3bf; }
.q-correct { border-left: 5px solid var(--ok); }
.q-wrong { border-left: 5px solid var(--bad); }
.tag { display: inline-block; font-size: .78rem; padding: .05rem .5rem; border-radius: 999px; margin-left: .4rem; vertical-align: middle; }
.tag-correct { background: var(--ok-bg); color: var(--ok); }
.tag-wrong { background: var(--bad-bg); color: var(--bad); }
.feedback { margin: .8rem 0; padding: .75rem 1rem; border-radius: 6px; }
.feedback.ok { background: var(--ok-bg); color: var(--ok); }
.feedback.wrong { background: var(--bad-bg); color: var(--bad); }
.feedback p { color: var(--text); margin: .4rem 0 0; }
.explanation { background: #eff1f5; padding: .7rem 1rem; border-radius: 6px; margin-top: .6rem; font-size: .95rem; }
.calc-input input { max-width: 260px; }
.calc-review { padding: .7rem .9rem; border-radius: 6px; }
.calc-review.ok { background: var(--ok-bg); }
.calc-review.wrong { background: var(--bad-bg); }

/* ---------- Prüfung ---------- */
.exam-bar {
    position: sticky; top: 0; z-index: 10; background: var(--navy); color: #fff;
    padding: .7rem 1.1rem; border-radius: 8px; margin-bottom: 1.2rem;
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: .5rem;
}
.timer { font-family: var(--mono); font-variant-numeric: tabular-nums; font-weight: 600; }
.timer.warning { color: #f0c674; }
.exam-submit { text-align: center; }

/* ---------- Tabellen ---------- */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: .6rem .7rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.table th { background: #eef0f4; font-weight: 600; font-size: .9rem; }
.table.compact td, .table.compact th { padding: .4rem .5rem; font-size: .92rem; }
.actions a { margin-right: .5rem; }

/* ---------- Admin ---------- */
.admin-nav { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 1.4rem; }
.admin-nav a { background: #fff; border: 1px solid var(--border); border-radius: 6px; padding: .45rem .9rem; text-decoration: none; color: var(--text); font-size: .95rem; }
.admin-nav a:hover { background: #f1f3f6; }
.admin-nav a.active { background: var(--navy); color: #fff; border-color: var(--navy); }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: .8rem; }
.stat-card { background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: .9rem; }
.stat-label { display: block; color: var(--muted); font-size: .85rem; }
.stat-value { display: block; font-family: var(--serif); font-size: 1.8rem; font-weight: 600; color: var(--navy); }
.filter-bar { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; margin-bottom: 1rem; }
.filter-bar select { padding: .4rem; }

/* ---------- Zertifikat ---------- */
.print-page .container { max-width: 900px; }
.certificate { text-align: center; }
.cert-inner { background: #fff; border: 10px double var(--navy); padding: 3rem 2.5rem; margin: 1rem auto; max-width: 780px; }
.cert-app { font-family: var(--mono); text-transform: uppercase; letter-spacing: .2em; color: var(--muted); font-size: .8rem; }
.certificate h1 { font-family: var(--serif); font-size: 2.6rem; color: var(--navy); margin: .5rem 0 1.5rem; letter-spacing: .02em; }
.cert-name { font-family: var(--serif); font-size: 2rem; font-weight: 600; margin: .5rem 0 1rem; border-bottom: 2px solid var(--gold); display: inline-block; padding: 0 1rem .2rem; }
.cert-lead { font-size: 1.05rem; }
.cert-result { font-size: 1.15rem; font-weight: 600; margin: 1.5rem 0; }
.cert-meta { color: var(--muted); font-family: var(--mono); font-size: .85rem; }
.cert-note { color: var(--muted); margin-top: 2rem; }
.cert-actions { margin-top: 1rem; }

@media print {
    .no-print, .topbar, .footer { display: none !important; }
    body { background: #fff; }
    .container { padding: 0; }
    .cert-inner { border-width: 8px; margin: 0; }
}

/* ---------- Mobil ---------- */
@media (max-width: 820px) {
    .topbar { padding: .8rem 1rem; }
    .topbar nav { gap: 1rem; font-size: .95rem; }
    .container { padding: 1.5rem 1rem 2.5rem; }
    h1 { font-size: 1.6rem; }
}