/* PDF→Hörtext — ruhiges Lesegrün + warmes Sandbeige */
:root {
  --green: #1f7a5a;
  --green-deep: #155c43;
  --green-soft: #2f9670;
  --sand: #f5edde;
  --sand-deep: #ece0c8;
  --bg: #faf6ec;
  --surface: #ffffff;
  --surface-2: #fbf7ee;
  --text: #243029;
  --text-soft: #5a685f;
  --border: #e3dac6;
  --highlight: #ffe9a8;
  --highlight-edge: #f1c84a;
  --shadow: 0 6px 22px rgba(31, 122, 90, 0.10);
  --radius: 14px;
  --radius-sm: 10px;
  --focus: #1f7a5a;
  --danger: #b4452e;
}

[data-theme="dark"] {
  --green: #4fbf94;
  --green-deep: #3aa57d;
  --green-soft: #58cfa0;
  --sand: #2a2f2b;
  --sand-deep: #232723;
  --bg: #161a17;
  --surface: #1e231f;
  --surface-2: #232a24;
  --text: #e7efe9;
  --text-soft: #a3b3a8;
  --border: #313a33;
  --highlight: #6b5a1f;
  --highlight-edge: #c7a23f;
  --shadow: 0 6px 22px rgba(0, 0, 0, 0.35);
  --focus: #7fe0bb;
  --danger: #e98a72;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100dvh;
  padding-bottom: env(safe-area-inset-bottom);
  -webkit-text-size-adjust: 100%;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--green);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 60;
}
.skip-link:focus { left: 0; }

/* Header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: calc(env(safe-area-inset-top) + 14px) 18px 14px;
  background: linear-gradient(135deg, var(--green) 0%, var(--green-deep) 100%);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 40;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  background: rgba(255,255,255,0.16);
  border-radius: 12px;
  color: #fff;
  flex-shrink: 0;
}
.brand-text { min-width: 0; }
.brand-text h1 { margin: 0; font-size: 1.25rem; letter-spacing: 0.2px; }
.tagline { margin: 0; font-size: 0.78rem; opacity: 0.9; }
.header-actions { display: flex; align-items: center; gap: 8px; }

/* Buttons */
.btn {
  font: inherit;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  transition: transform .08s ease, background .2s ease, box-shadow .2s ease, border-color .2s ease;
  color: var(--text);
  background: var(--surface);
  line-height: 1.2;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--green); color: #fff; border-color: var(--green); }
.btn-primary:hover:not(:disabled) { background: var(--green-deep); }
.btn-secondary { background: var(--sand-deep); color: var(--text); border-color: var(--border); }
.btn-secondary:hover:not(:disabled) { background: var(--sand); }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover:not(:disabled) { background: var(--surface-2); }
.btn-lg { padding: 13px 20px; font-size: 1rem; }
.btn-icon { padding: 9px 12px; background: rgba(255,255,255,0.16); color: #fff; border-color: transparent; }
.btn-icon:hover { background: rgba(255,255,255,0.28); }
.app-header .btn-ghost { color: #fff; border-color: rgba(255,255,255,0.5); }
.app-header .btn-ghost:hover { background: rgba(255,255,255,0.16); }
.theme-icon { font-size: 1.1rem; }
.ctrl-icon { font-size: 0.95em; }

/* Layout */
.layout {
  max-width: 880px;
  margin: 0 auto;
  padding: 18px 16px 32px;
  display: grid;
  gap: 18px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.card-title {
  margin: 0 0 14px;
  font-size: 1.05rem;
  color: var(--green-deep);
  letter-spacing: 0.2px;
}
[data-theme="dark"] .card-title { color: var(--green); }

/* Tabs */
.tabs {
  display: flex;
  gap: 6px;
  background: var(--surface-2);
  padding: 5px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.tab {
  flex: 1 1 80px;
  font: inherit;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--text-soft);
  padding: 9px 10px;
  border-radius: 8px;
  cursor: pointer;
  transition: background .2s ease, color .2s ease;
}
.tab:hover { color: var(--text); }
.tab.is-active { background: var(--green); color: #fff; }
.tab:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.panel { display: block; }

.field-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-soft);
}
.val { font-weight: 700; color: var(--green); }
[data-theme="dark"] .val { color: var(--green-soft); }

.text-area {
  width: 100%;
  resize: vertical;
  font: inherit;
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  min-height: 120px;
}
.text-area:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; border-color: var(--green); }

.row-actions { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.hint { font-size: 0.85rem; color: var(--text-soft); margin: 0 0 12px; }
.note { font-size: 0.85rem; margin: 12px 0 0; word-break: break-word; overflow-wrap: anywhere; }
.note.is-error { color: var(--danger); font-weight: 600; }
.note.is-ok { color: var(--green); font-weight: 600; }
[data-theme="dark"] .note.is-ok { color: var(--green-soft); }

/* File drop */
.file-drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  padding: 26px 16px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  cursor: pointer;
  transition: border-color .2s ease, background .2s ease;
}
.file-drop:hover, .file-drop.is-drag {
  border-color: var(--green);
  background: var(--sand);
}
.file-drop-icon { font-size: 1.8rem; }
.file-drop-text { font-weight: 600; color: var(--text); }
.file-drop:focus-within { outline: 3px solid var(--focus); outline-offset: 2px; }
.visually-hidden-input {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

/* Transport */
.transport {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.transport .btn { flex: 1 1 auto; }

.controls-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 16px;
}
@media (min-width: 560px) {
  .controls-grid { grid-template-columns: 1fr 1fr 1fr; }
}
.control { min-width: 0; }

.select {
  width: 100%;
  font: inherit;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
}
.select:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; }

.range {
  width: 100%;
  accent-color: var(--green);
  height: 28px;
}
.range:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; border-radius: 4px; }

.bookmark-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 10px;
}
.progress-text {
  font-size: 0.85rem;
  color: var(--text-soft);
  margin-left: auto;
  word-break: break-word;
}

.progress-bar {
  height: 8px;
  background: var(--sand-deep);
  border-radius: 99px;
  overflow: hidden;
}
.progress-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--green-soft), var(--green));
  transition: width .2s ease;
}

/* Reader */
.reading-card { }
.reader {
  font-size: 1.15rem;
  line-height: 1.9;
  max-height: 46vh;
  overflow-y: auto;
  padding: 14px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--border);
  word-break: break-word;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}
.reader:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.reader:empty::before {
  content: "Der geladene Text erscheint hier.";
  color: var(--text-soft);
  font-size: 0.95rem;
}
.word { border-radius: 4px; padding: 0 1px; transition: background .12s ease; }
.word.is-active {
  background: var(--highlight);
  box-shadow: 0 0 0 2px var(--highlight-edge) inset;
  color: #2a2412;
}
[data-theme="dark"] .word.is-active { color: #fdf4d6; }
.sentence.is-active-sentence { background: rgba(31,122,90,0.08); border-radius: 6px; }
[data-theme="dark"] .sentence.is-active-sentence { background: rgba(127,224,187,0.10); }
.bookmark-marker {
  border-bottom: 2px solid var(--green);
}

/* Footer */
.app-footer {
  text-align: center;
  padding: 16px;
  font-size: 0.8rem;
  color: var(--text-soft);
}

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom));
  transform: translateX(-50%) translateY(10px);
  background: var(--green-deep);
  color: #fff;
  padding: 12px 18px;
  border-radius: 99px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  z-index: 80;
  opacity: 0;
  transition: opacity .25s ease, transform .25s ease;
  max-width: 90vw;
  text-align: center;
  font-weight: 600;
}
.toast.is-show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 30, 24, 0.55);
  display: grid;
  place-items: center;
  z-index: 90;
  padding: 18px;
}
.modal {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 22px;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
  border: 1px solid var(--border);
}
.modal-title { margin: 0 0 10px; color: var(--green-deep); font-size: 1.15rem; }
[data-theme="dark"] .modal-title { color: var(--green); }
.modal-body { margin: 0 0 20px; color: var(--text); word-break: break-word; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}