/* Schlichtes, ruhiges Design. Systemschriften, keine externen Ressourcen. */
:root {
  --bg: #f6f5f2;
  --surface: #ffffff;
  --text: #22262a;
  --muted: #6b7178;
  --border: #e2dfd8;
  --accent: #3d6b5c;      /* gedämpftes Grün */
  --accent-text: #ffffff;
  --alert-bg: #fbeceb;
  --alert-text: #8a2f28;
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #181a1c;
    --surface: #222527;
    --text: #e6e4df;
    --muted: #9aa0a6;
    --border: #34383b;
    --accent: #7fb3a0;
    --accent-text: #10201a;
    --alert-bg: #3a2220;
    --alert-text: #f2b8b2;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 var(--font);
}
a { color: var(--accent); }
h1 { font-size: 1.5rem; font-weight: 600; margin: 0 0 .75rem; }

/* Kopfzeile */
.topbar {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  padding: .75rem 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 600; color: var(--text); text-decoration: none; }
.mainnav { display: flex; gap: .75rem; flex: 1; }
.mainnav a { color: var(--muted); text-decoration: none; padding: .25rem .5rem; border-radius: 6px; }
.mainnav a[aria-current="page"] { color: var(--text); background: var(--bg); }
.logout { display: flex; align-items: center; gap: .5rem; margin: 0; }
.whoami { color: var(--muted); font-size: .9rem; }

/* Seiteninhalt */
.page { max-width: 1100px; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
.auth { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.auth-card { width: 100%; max-width: 360px; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }

/* Formulare */
label { display: block; font-size: .9rem; margin: .75rem 0 .25rem; }
input, select, textarea {
  width: 100%;
  padding: .6rem .7rem;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}
input:focus, select:focus, textarea:focus, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.code-input { font-size: 1.4rem; letter-spacing: .3em; text-align: center; }
.btn {
  display: inline-block; width: 100%;
  margin-top: 1.1rem; padding: .65rem 1rem;
  font: inherit; font-weight: 600;
  color: var(--accent-text); background: var(--accent);
  border: 0; border-radius: 8px; cursor: pointer;
}
.btn:hover { filter: brightness(1.05); }
.btn-link { background: none; border: 0; padding: 0; font: inherit; color: var(--accent); cursor: pointer; }
.alert {
  background: var(--alert-bg); color: var(--alert-text);
  padding: .6rem .75rem; border-radius: 8px; font-size: .9rem;
}

@media (max-width: 520px) {
  .whoami { display: none; }
  .topbar { gap: .4rem; justify-content: space-between; padding-bottom: .4rem; }
  /* Navigation in eigene Zeile, seitlich wischbar */
  .mainnav { order: 3; flex: 1 0 100%; gap: .2rem; margin: 0 -.5rem; padding: 0 .5rem; }
  h1 { font-size: 1.3rem; }
}

/* ---------- Etappe 2: Projekte, Aufgaben, Board ---------- */
[hidden] { display: none !important; }
h2 { font-size: 1.1rem; font-weight: 600; margin: 0 0 .6rem; }
h3 { font-size: .95rem; font-weight: 600; margin: 0; }
.page-wide { max-width: 1300px; }
.page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.page-head h1 { margin-bottom: .2rem; }
.section-head { margin-top: 2rem; }
.actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.crumbs { margin: 0 0 .25rem; color: var(--muted); }
.crumbs a { color: var(--muted); }
.count { color: var(--muted); font-weight: 400; font-size: .85em; margin-left: .25rem; }
.hint { font-size: .8rem; color: var(--muted); margin: .3rem 0 0; }
.prewrap { white-space: pre-wrap; overflow-wrap: anywhere; }

.btn-inline { width: auto; margin-top: 0; padding: .5rem .9rem; text-decoration: none; font-size: .95rem; }
.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: #a3443b; color: #fff; }
.danger { color: #a3443b; }
@media (prefers-color-scheme: dark) { .btn-danger { background: #c4685e; color: #1b0f0d; } .danger { color: #e39a91; } }
.form-card { max-width: 720px; }
.form-actions { display: flex; align-items: center; gap: 1rem; margin-top: 1.2rem; }
.delete-form { margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--border); }
textarea { resize: vertical; }
.grid-2, .grid-3 { display: grid; gap: 0 1rem; grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }

/* Projektliste */
.group { margin-bottom: 1.5rem; }
.project-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; }
.project-row { display: grid; grid-template-columns: 1fr auto auto; gap: 1rem; align-items: center;
  text-decoration: none; color: var(--text); padding: .8rem 1rem; }
.project-row:hover { border-color: var(--accent); }
.project-name { font-weight: 600; }
.badge { display: inline-block; font-size: .8rem; padding: .1rem .5rem; border-radius: 99px;
  background: var(--bg); border: 1px solid var(--border); color: var(--text); margin-right: .3rem; }
.badge-aktiv { border-color: var(--accent); color: var(--accent); }

/* Projektseite */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.contact { display: flex; justify-content: space-between; gap: 1rem; padding: .6rem 0; border-bottom: 1px solid var(--border); }
.contact-actions { display: flex; gap: .75rem; align-items: flex-start; white-space: nowrap; }
.contact-actions form { margin: 0; }
.add-contact { margin-top: .8rem; }
.add-contact summary { cursor: pointer; color: var(--accent); }
.add-contact .btn-inline { margin-top: .8rem; }

/* Filter-Reiter */
.tabs { display: flex; gap: .4rem; flex-wrap: wrap; margin-bottom: 1rem; }
.tabs a { padding: .35rem .8rem; border-radius: 99px; border: 1px solid var(--border);
  color: var(--muted); text-decoration: none; font-size: .9rem; background: var(--surface); }
.tabs a[aria-current="page"] { color: var(--accent-text); background: var(--accent); border-color: var(--accent); }

/* Kanban */
.board { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; align-items: start; }
.column { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: .75rem; min-height: 8rem; }
.column.drop-target { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.column-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: .6rem; }
.column-head .add { text-decoration: none; font-size: 1.3rem; line-height: 1; padding: 0 .4rem; border-radius: 6px; }
.column-head .add:hover { background: var(--bg); }
.cards { display: grid; gap: .5rem; }
.task { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: .6rem .7rem; cursor: grab; }
.task.dragging { opacity: .5; }
.task.overdue { border-left: 3px solid #b5523f; }
.task-title { display: block; color: var(--text); text-decoration: none; font-weight: 500; overflow-wrap: anywhere; }
.task-title:hover { text-decoration: underline; }
.task-meta { display: flex; flex-wrap: wrap; gap: .3rem .6rem; font-size: .8rem; color: var(--muted); margin-top: .3rem; }
.task.overdue .due { color: #b5523f; font-weight: 600; }
.tag { color: var(--accent); text-decoration: none; }
.move { display: flex; flex-wrap: wrap; gap: .3rem; margin: .5rem 0 0; }
.chip { font: inherit; font-size: .75rem; padding: .15rem .5rem; border-radius: 99px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--muted); }
.chip:hover { color: var(--text); border-color: var(--accent); }
.empty { margin: .25rem 0; }

@media (max-width: 860px) {
  .board, .split { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .project-row { grid-template-columns: 1fr; gap: .2rem; }
}

/* ---------- Etappe 3: Dashboard und Verlauf ---------- */
.dash { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; align-items: start; }
.card-warn { border-color: #d9a59c; }
.tasklist, .statuslist, .activity { list-style: none; margin: 0; padding: 0; }
.tasklist li, .activity li { padding: .45rem 0; border-bottom: 1px solid var(--border); }
.tasklist li:last-child, .activity li:last-child, .statuslist li:last-child { border-bottom: 0; }
.tasklist li > a { display: block; color: var(--text); text-decoration: none; font-weight: 500; overflow-wrap: anywhere; }
.tasklist li > a:hover { text-decoration: underline; }
.due-late { color: #b5523f; font-weight: 600; }
.statuslist li { display: grid; gap: .2rem; padding: .45rem 0; border-bottom: 1px solid var(--border); }
.statuslabel { font-weight: 600; }
.activity li { display: grid; grid-template-columns: 7.5rem 1fr; gap: .5rem; font-size: .92rem; }
.activity a { color: var(--text); }
.big { font-size: 1.6rem; font-weight: 600; margin: .2rem 0 .5rem; }
progress.meter { width: 100%; height: .6rem; appearance: none; -webkit-appearance: none; border: 0;
  border-radius: 99px; background: var(--bg); overflow: hidden; }
progress.meter::-webkit-progress-bar { background: var(--bg); border-radius: 99px; }
progress.meter::-webkit-progress-value { background: var(--accent); border-radius: 99px; }
progress.meter::-moz-progress-bar { background: var(--accent); border-radius: 99px; }
progress.meter-warn::-webkit-progress-value { background: #b5523f; }
progress.meter-warn::-moz-progress-bar { background: #b5523f; }
code { font-size: .9em; background: var(--bg); padding: .05rem .3rem; border-radius: 4px; }

@media (max-width: 1000px) { .dash { grid-template-columns: 1fr 1fr; } }
@media (max-width: 680px) {
  .dash { grid-template-columns: 1fr; }
  .activity li { grid-template-columns: 1fr; gap: 0; }
}

/* ---------- Etappe 4: Chat, Dokumente, Einstellungen ---------- */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.notice { background: var(--bg); border: 1px solid var(--accent); color: var(--accent); padding: .5rem .75rem; border-radius: 8px; }
.section-gap { margin-top: 1rem; }
.form-wide { max-width: 980px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9rem; line-height: 1.45; }
label.check { display: flex; gap: .5rem; align-items: flex-start; font-size: .9rem; margin-top: .9rem; }
label.check input { width: auto; margin-top: .2rem; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: .4rem 1rem; margin: 0; font-size: .92rem; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; overflow-wrap: anywhere; }
.chip-on { color: var(--accent); border-color: var(--accent); }
.doc-row { display: grid; grid-template-columns: 1fr auto auto; gap: 1rem; align-items: center; padding: .7rem 1rem; }
.doc-row form { margin: 0; }
.doc-row .project-name { color: var(--text); text-decoration: none; }
.doc-body { padding: 1.5rem; }

/* Navigation: auf schmalen Bildschirmen seitlich wischbar */
.mainnav { overflow-x: auto; scrollbar-width: none; }
.mainnav::-webkit-scrollbar { display: none; }
.mainnav a { white-space: nowrap; }

/* Markdown-Inhalte */
.md > :first-child { margin-top: 0; }
.md > :last-child { margin-bottom: 0; }
.md h1, .md h2, .md h3 { margin: 1.2em 0 .5em; }
.md h1 { font-size: 1.35rem; } .md h2 { font-size: 1.15rem; } .md h3 { font-size: 1rem; }
.md p, .md ul, .md ol { margin: .6em 0; }
.md ul, .md ol { padding-left: 1.4em; }
.md pre { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: .7rem; overflow-x: auto; }
.md pre code { background: none; padding: 0; }
.md table { border-collapse: collapse; display: block; overflow-x: auto; margin: .8em 0; }
.md th, .md td { border: 1px solid var(--border); padding: .35rem .6rem; text-align: left; vertical-align: top; }
.md blockquote { margin: .8em 0; padding-left: .9rem; border-left: 3px solid var(--border); color: var(--muted); }
.md a { overflow-wrap: anywhere; }

/* Chat */
.page-chat { max-width: 1200px; }
.chat-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 1.25rem; align-items: start; }
.chat-side { position: sticky; top: 1rem; }
.chat-side summary { cursor: pointer; }
.chat-side .btn-inline { margin-top: 1rem; }
.chat-head h1 { margin-bottom: .1rem; }
.messages { display: grid; gap: .75rem; margin: 1rem 0; }
.msg { border-radius: var(--radius); padding: .75rem 1rem; border: 1px solid var(--border); background: var(--surface); }
.msg-assistant { background: var(--bg); border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); }
.msg-error { border-color: #d9a59c; }
.msg-head { display: flex; flex-wrap: wrap; gap: .25rem .6rem; align-items: baseline; margin-bottom: .3rem; }
.msg-body { overflow-wrap: anywhere; }
.typing { color: var(--accent); animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .35; } }
@media (prefers-reduced-motion: reduce) { .typing { animation: none; } }
.composer { position: sticky; bottom: 0; background: var(--bg); padding: .75rem 0 1rem; border-top: 1px solid var(--border); }
.composer textarea { background: var(--surface); }
.composer-actions { display: flex; flex-wrap: wrap; gap: .5rem 1rem; align-items: center; margin-top: .5rem; }
.composer-actions .btn-link { margin-left: auto; }
button:disabled { opacity: .5; cursor: not-allowed; }

@media (max-width: 900px) {
  .chat-layout { grid-template-columns: 1fr; }
  .chat-side { position: static; order: -1; }
  .composer-actions .btn-link { margin-left: 0; }
}
@media (max-width: 520px) {
  .doc-row { grid-template-columns: 1fr auto; }
  .doc-row > span { display: none; }
  .facts { grid-template-columns: 1fr; }
  .facts dd { margin-bottom: .5rem; }
}