:root {
  color-scheme: light;
  --ink: #1c1917;
  --muted: #78716c;
  --line: #a8a29e;
  --paper: #f6f3ee;
  --panel: #fffdf8;
  --accent: #0f766e;
  --accent-soft: #ccfbf1;
  --danger: #9f1239;
  --shadow: 0 10px 30px rgba(28, 25, 23, 0.08);
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
}

* {
  box-sizing: border-box;
}

/* hidden-Attribut hat Vorrang vor späteren display-Regeln
   (Chat-Panel, Dialoge, Banner, Start-Ansicht). */
[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at 20% 0%, rgba(15, 118, 110, 0.08), transparent 36%),
    var(--paper);
  color: var(--ink);
}

.bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 16px;
  padding: 12px 18px;
  border-bottom: 1px solid rgba(28, 25, 23, 0.08);
  background: rgba(255, 253, 248, 0.9);
  backdrop-filter: blur(8px);
}

.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.actions,
.styles {
  display: flex;
  align-items: center;
  gap: 8px;
}

.styles label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.88rem;
}

.styles label[hidden] {
  display: none;
}

.styles select {
  font: inherit;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid rgba(28, 25, 23, 0.14);
  border-radius: 999px;
  padding: 6px 10px;
  cursor: pointer;
}

button {
  border: 1px solid rgba(28, 25, 23, 0.14);
  background: var(--panel);
  color: var(--ink);
  border-radius: 999px;
  padding: 8px 14px;
  font: inherit;
  cursor: pointer;
}

button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

#delete-node:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.hint {
  margin: 0 0 0 auto;
  color: var(--muted);
  font-size: 0.92rem;
}

#viewport {
  position: relative;
  flex: 1;
  overflow: hidden;
  cursor: grab;
  background-image: radial-gradient(rgba(28, 25, 23, 0.08) 1px, transparent 1px);
  background-size: 22px 22px;
}

#viewport.panning {
  cursor: grabbing;
}

#world {
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 0;
  transform-origin: 0 0;
}

#edges {
  position: absolute;
  overflow: visible;
  pointer-events: none;
}

#nodes {
  position: absolute;
  left: 0;
  top: 0;
}

.node {
  position: absolute;
  width: max-content;
  max-width: none;
  transform: translate(-50%, -50%);
  padding: 5px 10px;
  border-radius: 7px;
  border: 1px solid transparent;
  background: transparent;
  cursor: grab;
  user-select: none;
  text-align: center;
  line-height: 1.25;
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  font-size: 13px;
  white-space: nowrap;
}

.node.branch {
  font-weight: 600;
}

.node.leaf {
  padding: 1px 2px;
  font-weight: 500;
}

.node.selected {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.node.editing {
  cursor: text;
  user-select: text;
}

.node-text {
  outline: none;
  white-space: nowrap;
}

/* ---------- Chat-Panel ---------- */

#chat {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 10;
  display: flex;
  flex-direction: column;
  width: min(360px, calc(100vw - 36px));
  height: min(460px, calc(100vh - 120px));
  border: 1px solid rgba(28, 25, 23, 0.14);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.chat-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid rgba(28, 25, 23, 0.08);
  background: rgba(255, 253, 248, 0.9);
}

.chat-title {
  font-weight: 700;
}

.chat-model {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#chat-auth {
  padding: 4px 10px;
  font-size: 0.8rem;
}

#chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chat-message {
  max-width: 92%;
  padding: 7px 11px;
  border-radius: 10px;
  font-size: 0.92rem;
  line-height: 1.35;
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

.chat-message.user {
  align-self: flex-end;
  background: var(--accent-soft);
  color: #134e4a;
}

.chat-message.assistant {
  align-self: flex-start;
  background: rgba(28, 25, 23, 0.05);
}

.chat-message.pending {
  color: var(--muted);
  font-style: italic;
}

.chat-message.error {
  align-self: flex-start;
  background: rgba(159, 18, 57, 0.08);
  color: var(--danger);
}

#chat-form {
  display: flex;
  gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid rgba(28, 25, 23, 0.08);
  background: rgba(255, 253, 248, 0.9);
}

#chat-input {
  flex: 1;
  resize: none;
  font: inherit;
  font-size: 0.92rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid rgba(28, 25, 23, 0.14);
  border-radius: 8px;
  padding: 7px 10px;
}

#chat-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

#chat-send {
  align-self: flex-end;
}

#chat-send:disabled {
  opacity: 0.5;
  cursor: default;
}

/* ---------- Kopie-Banner (lokal bearbeitbare Kopie einer Galerie-Karte) ---------- */

#view-banner {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 9;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: calc(100vw - 32px);
  padding: 10px 16px;
  border: 1px solid rgba(28, 25, 23, 0.14);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: var(--shadow);
  font-size: 0.92rem;
}

.view-title-label,
.view-note {
  color: var(--muted);
  white-space: nowrap;
}

#view-title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 34vw;
}

/* ---------- Start-Ansicht ---------- */

#start {
  position: fixed;
  inset: 0;
  z-index: 5;
  overflow-y: auto;
  background:
    radial-gradient(circle at 20% 0%, rgba(15, 118, 110, 0.08), transparent 36%),
    var(--paper);
}

.start-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 8vh 24px 48px;
}

.start-brand {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: 0.01em;
}

.start-sub {
  margin: 10px 0 32px;
  color: var(--muted);
  font-size: 1.05rem;
}

.start-new {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  width: 100%;
  padding: 26px 32px;
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  font-weight: 700;
  border: 2px solid var(--accent);
  border-radius: 16px;
  background: var(--accent-soft);
  color: #134e4a;
}

.start-new:hover {
  background: #b5f2e7;
  border-color: #0b5f57;
  color: #0b4f48;
}

.start-plus {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6em;
  height: 1.6em;
  border: 2px solid currentColor;
  border-radius: 50%;
  font-size: 1.15em;
  line-height: 1;
}

.start-continue {
  display: block;
  width: 100%;
  margin-top: 12px;
  padding: 14px 20px;
  font-size: 1.02rem;
  border-style: dashed;
}

.gallery {
  margin-top: 48px;
}

.gallery-title {
  margin: 0 0 6px;
  font-size: 1.3rem;
}

.gallery-sub {
  margin: 0 0 18px;
  color: var(--muted);
}

.gallery-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.gallery-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: 16px 18px;
  text-align: left;
  border-radius: 12px;
}

.gallery-card-title {
  font-weight: 700;
  font-size: 1.02rem;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.gallery-card-meta {
  color: var(--muted);
  font-size: 0.85rem;
}

#gallery-empty,
#gallery-error {
  color: var(--muted);
  font-style: italic;
}

#gallery-error {
  color: var(--danger);
  font-style: normal;
}

/* ---------- Veröffentlichungs-Dialog ---------- */

#publish-dialog {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(28, 25, 23, 0.4);
  backdrop-filter: blur(4px);
}

.publish-card {
  width: min(480px, 100%);
  padding: 24px 26px;
  border: 1px solid rgba(28, 25, 23, 0.14);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.publish-card h3 {
  margin: 0 0 10px;
}

.publish-warn {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(159, 18, 57, 0.06);
  color: var(--danger);
  font-size: 0.92rem;
}

.publish-card label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  color: var(--muted);
}

#publish-title {
  flex: 1;
  font: inherit;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid rgba(28, 25, 23, 0.14);
  border-radius: 8px;
  padding: 7px 10px;
}

.publish-confirm-hint {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 0.92rem;
}

#publish-confirm {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid rgba(28, 25, 23, 0.14);
  border-radius: 8px;
  padding: 8px 10px;
}

#publish-confirm:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

.publish-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 16px;
}

/* ---------- Toast ---------- */

#toast {
  position: fixed;
  left: 50%;
  bottom: 74px;
  transform: translateX(-50%);
  z-index: 30;
  max-width: min(480px, calc(100vw - 32px));
  padding: 10px 16px;
  border: 1px solid var(--accent);
  border-radius: 10px;
  background: var(--panel);
  box-shadow: var(--shadow);
  color: #134e4a;
  font-size: 0.95rem;
}