/* ════════════════════════════════════════════════════════════════
   Plotoria 2.0 – Gestaltung nach Apples Human Interface Guidelines
   Systemschrift · Systemfarben · Materialien · Federbewegungen
   ════════════════════════════════════════════════════════════════ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* ── Farben (iOS/macOS Systemfarben) ── */
:root {
  color-scheme: light;
  --font: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --bg: #F2F2F7;                    /* systemGroupedBackground */
  --surface: #FFFFFF;               /* secondarySystemGroupedBackground */
  --surface-2: #F2F2F7;
  --fill: rgba(118, 118, 128, 0.12);       /* tertiarySystemFill */
  --fill-strong: rgba(118, 118, 128, 0.2);
  --separator: rgba(60, 60, 67, 0.18);
  --label: #000000;
  --label-2: rgba(60, 60, 67, 0.6);
  --label-3: rgba(60, 60, 67, 0.3);
  --accent: #007AFF;
  --accent-tint: rgba(0, 122, 255, 0.12);
  --red: #FF3B30;
  --green: #34C759;
  --orange: #FF9500;

  --material: rgba(249, 249, 249, 0.78);        /* Leisten */
  --material-glass: rgba(255, 255, 255, 0.72);  /* schwebende Elemente */
  --material-edge: rgba(255, 255, 255, 0.6);
  --scrim: rgba(0, 0, 0, 0.32);

  --shadow-float: 0 8px 32px rgba(0, 0, 0, 0.12), 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-sheet: 0 24px 80px rgba(0, 0, 0, 0.25);

  --r-sm: 8px; --r-md: 10px; --r-lg: 14px; --r-xl: 20px;
  /* Federkurve (kritisch gedämpft, ohne Überschwingen) */
  --spring: cubic-bezier(0.32, 0.72, 0, 1);
  --t-fast: 120ms; --t-med: 380ms;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #000000;
  --surface: #1C1C1E;
  --surface-2: #2C2C2E;
  --fill: rgba(118, 118, 128, 0.24);
  --fill-strong: rgba(118, 118, 128, 0.36);
  --separator: rgba(84, 84, 88, 0.6);
  --label: #FFFFFF;
  --label-2: rgba(235, 235, 245, 0.6);
  --label-3: rgba(235, 235, 245, 0.3);
  --accent: #0A84FF;
  --accent-tint: rgba(10, 132, 255, 0.2);
  --red: #FF453A;
  --green: #30D158;
  --material: rgba(30, 30, 30, 0.75);
  --material-glass: rgba(44, 44, 46, 0.72);
  --material-edge: rgba(255, 255, 255, 0.08);
  --scrim: rgba(0, 0, 0, 0.5);
  --shadow-float: 0 8px 32px rgba(0, 0, 0, 0.5), 0 1px 3px rgba(0, 0, 0, 0.4);
}

html, body {
  height: 100%;
  font: 400 13px/1.45 var(--font);
  letter-spacing: -0.003em;
  color: var(--label);
  background: var(--bg);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 300ms;
}

button, input, select, textarea { font: inherit; color: inherit; letter-spacing: inherit; }
button { cursor: pointer; background: none; border: none; }
button:disabled { opacity: 0.35; cursor: default; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 55%, transparent); outline-offset: 1px; border-radius: 6px; }

.icon { width: 18px; height: 18px; flex: none; display: block; }

#app { height: 100vh; height: 100dvh; display: flex; flex-direction: column; }

/* ── Werkzeugleiste (durchscheinendes Material) ── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  padding-left: max(14px, env(safe-area-inset-left));
  padding-right: max(14px, env(safe-area-inset-right));
  min-height: 52px;
  background: var(--material);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 0.5px solid var(--separator);
  position: relative;
  z-index: 20;
}

.toolbar-brand { display: flex; align-items: center; gap: 8px; flex: none; }
.brand-icon { border-radius: 6px; }
.brand-name { font-size: 15px; font-weight: 650; letter-spacing: -0.015em; }
.brand-version {
  font-size: 10px; font-weight: 600; letter-spacing: 0.02em;
  color: var(--label-2); background: var(--fill); padding: 1px 6px; border-radius: 6px;
}

.title-field {
  flex: 0 1 260px;
  min-width: 90px;
  height: 30px;
  padding: 0 10px;
  border: none;
  border-radius: var(--r-sm);
  background: var(--fill);
  font-size: 13px;
  font-weight: 500;
  outline: none;
  transition: background var(--t-fast);
}
.title-field:focus { background: var(--surface); box-shadow: 0 0 0 3px var(--accent-tint), 0 0 0 1px var(--accent); }

.toolbar-spacer { flex: 1; }
.toolbar-group { display: flex; gap: 2px; }

.tb-btn {
  display: inline-flex; align-items: center; gap: 5px;
  height: 30px; min-width: 32px; padding: 0 7px;
  border-radius: var(--r-sm);
  color: var(--label-2);
  font-size: 13px; font-weight: 500;
  transition: background var(--t-fast), transform var(--t-fast) ease-out;
}
.tb-btn:hover { background: var(--fill); color: var(--label); }
.tb-btn:active { transform: scale(0.94); background: var(--fill-strong); }
.tb-btn .icon { width: 19px; height: 19px; }

/* ── Schaltflächen ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 32px; padding: 0 14px;
  border-radius: var(--r-sm);
  font-size: 13px; font-weight: 590;
  white-space: nowrap;
  transition: transform var(--t-fast) ease-out, filter var(--t-fast), background var(--t-fast);
}
.btn:active { transform: scale(0.97); }
.btn .icon { width: 16px; height: 16px; }
.btn-filled { background: var(--accent); color: #fff; }
.btn-filled:hover { filter: brightness(1.08); }
.btn-tinted { background: var(--accent-tint); color: var(--accent); }
.btn-tinted:hover { filter: brightness(0.97); }
.btn-gray { background: var(--fill); color: var(--label); }
.btn-gray:hover { background: var(--fill-strong); }
.btn-sm { height: 28px; padding: 0 10px; font-size: 12px; }

.btn-round {
  width: 32px; height: 32px; flex: none;
  border-radius: 50%;
  background: var(--accent); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform var(--t-fast) ease-out;
}
.btn-round:active { transform: scale(0.92); }

.link-btn { color: var(--accent); font-size: 13px; font-weight: 500; padding: 2px 0; }
.link-btn:active { opacity: 0.5; }
.link-strong { font-weight: 650; }

.btn-row { display: flex; gap: 6px; align-items: center; }
.btn-row-wrap { flex-wrap: wrap; margin: 10px 0 16px; }

.badge {
  min-width: 18px; height: 18px; padding: 0 5px; border-radius: 9px;
  background: var(--accent); color: #fff; font-size: 11px; font-weight: 600;
  display: inline-flex; align-items: center; justify-content: center;
}
.badge:empty { display: none; }

/* ── Segmented Control ── */
.segmented {
  display: flex;
  padding: 2px;
  border-radius: 9px;
  background: var(--fill);
  position: relative;
  flex: none;
}
.segmented > button {
  flex: 1;
  min-height: 28px;
  padding: 0 12px;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 500;
  color: var(--label);
  display: inline-flex; align-items: center; justify-content: center;
  transition: background var(--t-fast), box-shadow var(--t-fast), transform var(--t-fast) ease-out;
}
.segmented > button:active { transform: scale(0.96); }
.segmented > button.active {
  background: var(--surface);
  font-weight: 600;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12), 0 3px 1px rgba(0, 0, 0, 0.04);
}
:root[data-theme="dark"] .segmented > button.active { background: #636366; }
.segmented > button { white-space: nowrap; }
.segmented-sm > button { min-height: 24px; padding: 0 9px; font-size: 11px; font-weight: 600; letter-spacing: 0.01em; }

/* ── Layout ── */
main { flex: 1; display: flex; min-height: 0; }

#graph-panel { flex: 1; position: relative; min-width: 0; background: var(--surface); }
#graph-container { display: block; width: 100%; height: 100%; cursor: grab; touch-action: none; user-select: none; -webkit-user-select: none; }
#graph-container:active { cursor: grabbing; }
#graph-container.mode-cross, #graph-container.mode-cross:active { cursor: crosshair; }
#graph-container.mode-text, #graph-container.mode-text:active { cursor: text; }

/* ── Seitenleiste ── */
#sidebar {
  width: 360px;
  min-width: 300px;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  border-left: 0.5px solid var(--separator);
  min-height: 0;
}
.sidebar-head { padding: 10px 14px 8px; }
.sidebar-head .segmented { width: 100%; }
.sidebar-scroll { flex: 1; overflow-y: auto; padding: 4px 14px 24px; overscroll-behavior: contain; }
.pane { display: none; }
.pane.active { display: block; animation: fade-in var(--t-med) var(--spring); }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

/* ── Gruppierte Listen (wie iOS-Einstellungen) ── */
.group { margin-top: 18px; }
.group-head {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 0 4px 6px;
}
.group-head h3 {
  font-size: 12px; font-weight: 600; letter-spacing: 0.01em;
  color: var(--label-2); text-transform: uppercase;
}
.group-body { background: var(--surface); border-radius: var(--r-md); }
.group-body:empty { display: none; }
.group-body.form { padding: 4px 12px; display: flex; flex-direction: column; }
.group-body.form > .segmented { margin: 8px 0; }

.row {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  min-height: 40px;
  padding: 4px 0;
  border-bottom: 0.5px solid var(--separator);
}
.row:last-child { border-bottom: none; }
.row > label { flex: 1; font-size: 13px; color: var(--label); }
[hidden] { display: none !important; }
.row .field { max-width: 170px; }
.row input[type="range"] { width: 150px; }

.pair { display: flex; align-items: center; gap: 6px; }
.pair .field { width: 70px; }
.pair span, .unit span { color: var(--label-2); font-size: 12px; }
.unit { display: flex; align-items: center; gap: 6px; }
.unit .field { width: 78px; text-align: right; }

.hint { font-size: 11.5px; line-height: 1.4; color: var(--label-2); margin: 6px 4px; }

/* ── Eingabefelder ── */
.field {
  width: 100%;
  height: 30px;
  padding: 0 9px;
  border: none;
  border-radius: 7px;
  background-color: var(--fill);
  font-size: 13px;
  outline: none;
  transition: box-shadow var(--t-fast), background-color var(--t-fast);
}
textarea.field { height: auto; padding: 8px 9px; resize: vertical; line-height: 1.4; }
select.field {
  appearance: none; -webkit-appearance: none; padding-right: 26px; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238E8E93' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m7 10 5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 6px center; background-size: 14px;
}
.field:focus { background-color: var(--surface); box-shadow: 0 0 0 1px var(--accent), 0 0 0 4px var(--accent-tint); }
.field-mono { font-family: var(--mono); font-size: 12.5px; }
.field::placeholder { color: var(--label-3); }

input.swatch { width: 44px; height: 26px; padding: 2px; border: none; border-radius: 7px; background: var(--fill); cursor: pointer; }
input.swatch::-webkit-color-swatch-wrapper { padding: 0; }
input.swatch::-webkit-color-swatch { border: none; border-radius: 5px; }

input[type="range"] { -webkit-appearance: none; appearance: none; height: 4px; border-radius: 2px; background: var(--fill-strong); outline: none; cursor: pointer; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; border-radius: 50%; background: #fff; box-shadow: 0 0.5px 4px rgba(0, 0, 0, 0.12), 0 6px 13px rgba(0, 0, 0, 0.12); transition: transform var(--t-fast) ease-out; }
input[type="range"]:active::-webkit-slider-thumb { transform: scale(1.08); }
input[type="range"]::-moz-range-thumb { width: 22px; height: 22px; border: none; border-radius: 50%; background: #fff; box-shadow: 0 0.5px 4px rgba(0, 0, 0, 0.12), 0 6px 13px rgba(0, 0, 0, 0.12); }

/* iOS-Schalter */
.switch {
  -webkit-appearance: none; appearance: none;
  width: 42px; height: 26px; flex: none;
  border-radius: 13px;
  background: var(--fill-strong);
  position: relative;
  cursor: pointer;
  transition: background 220ms var(--spring);
}
.switch::after {
  content: '';
  position: absolute; top: 2px; left: 2px;
  width: 22px; height: 22px; border-radius: 50%;
  background: #fff;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15), 0 1px 1px rgba(0, 0, 0, 0.16);
  transition: transform 260ms var(--spring);
}
.switch:checked { background: var(--green); }
.switch:checked::after { transform: translateX(16px); }
.switch-label { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; color: var(--label-2); cursor: pointer; }

/* ── Eingabekarte ── */
.input-card { background: var(--surface); border-radius: var(--r-md); padding: 10px; margin-top: 6px; }
.input-row { display: flex; gap: 8px; align-items: center; }
.input-row .field { height: 34px; font-size: 13.5px; }
.input-error { color: var(--red); font-size: 12px; margin: 6px 2px 0; }
.input-error:empty, .input-preview:empty { display: none; }
.input-preview { margin: 8px 2px 0; font-size: 14px; color: var(--label-2); overflow-x: auto; }

/* ── Parameter ── */
#param-group .group-body { padding: 0 12px; }
.param-item { display: grid; grid-template-columns: auto 1fr 64px auto auto; align-items: center; gap: 8px; padding: 8px 0; border-bottom: 0.5px solid var(--separator); }
.param-item:last-child { border-bottom: none; }
.param-name { font: 600 13px var(--mono); color: var(--accent); }
.param-item .field { height: 26px; text-align: center; padding: 0 4px; }
.param-range { grid-column: 2 / -1; display: flex; gap: 6px; align-items: center; font-size: 11px; color: var(--label-2); }
.param-range .field { width: 56px; height: 22px; font-size: 11px; }
.param-add-row { display: grid; grid-template-columns: 48px 1fr auto; gap: 8px; padding: 10px 0; }
.icon-btn {
  width: 28px; height: 28px; border-radius: 50%; flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--label-2);
  transition: background var(--t-fast), transform var(--t-fast) ease-out, color var(--t-fast);
}
.icon-btn:hover { background: var(--fill); color: var(--label); }
.icon-btn:active { transform: scale(0.9); }
.icon-btn.accent { color: var(--accent); }
.icon-btn.danger:hover { color: var(--red); }
.icon-btn .icon { width: 16px; height: 16px; }
.icon-btn.txt-btn { font: 600 12px var(--mono); width: auto; min-width: 28px; padding: 0 4px; border-radius: 14px; }

/* ── Listen (Funktionen, Objekte, Messreihen) ── */
.list { overflow: hidden; }
.item { border-bottom: 0.5px solid var(--separator); }
.item:last-child { border-bottom: none; }
.item-row { display: flex; align-items: center; gap: 8px; min-height: 44px; padding: 6px 6px 6px 12px; }
.item.has-error .item-row { box-shadow: inset 3px 0 0 var(--red); }
.item.selected .item-row { background: var(--accent-tint); }
.color-dot {
  width: 14px; height: 14px; border-radius: 50%; flex: none;
  box-shadow: inset 0 0 0 0.5px rgba(0, 0, 0, 0.15);
  transition: opacity var(--t-fast);
  position: relative; overflow: hidden; cursor: pointer;
}
.color-dot input { position: absolute; inset: -6px; opacity: 0; cursor: pointer; }
.color-dot.off { opacity: 0.3; }
.item-main { flex: 1; min-width: 0; cursor: text; overflow: hidden; }
.item-main .katex { font-size: 1.08em; }
.item-title { font-size: 13px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item-sub { font-size: 11.5px; color: var(--label-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item-error { font-size: 11.5px; color: var(--red); white-space: normal; }
.item-sub { font-size: 11.5px; color: var(--label-2, #8E8E93); white-space: pre-line; margin-top: 1px; }
.item-actions { display: flex; align-items: center; flex: none; }
.item-edit { height: 28px; }

.item-detail { display: none; padding: 2px 12px 12px 34px; }
.item.open .item-detail { display: block; animation: fade-in var(--t-med) var(--spring); }
.disclose .icon { transition: transform 260ms var(--spring); }
.item.open .disclose .icon { transform: rotate(90deg); }
.detail-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 34px; font-size: 12.5px; }
.detail-row > span:first-child { color: var(--label-2); flex: none; }
.detail-row .field { height: 26px; font-size: 12px; }
.detail-row .pair .field { width: 62px; }
.detail-row input[type="range"] { width: 110px; }
.detail-row .segmented > button { padding: 0 8px; }
.detail-row .check { display: inline-flex; align-items: center; gap: 4px; font-size: 11.5px; color: var(--label-2); }
.detail-actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }

.empty-state { text-align: center; padding: 26px 16px; color: var(--label-2); background: var(--surface); border-radius: var(--r-md); }
.empty-state .icon { width: 34px; height: 34px; margin: 0 auto 8px; color: var(--label-3); }
.empty-state p { font-size: 15px; font-weight: 600; color: var(--label); letter-spacing: -0.01em; }
.empty-state small { font-size: 12px; }

/* ── Wertetabelle ── */
.value-table { margin-top: 12px; overflow-x: auto; background: var(--surface); border-radius: var(--r-md); }
.value-table:empty { display: none; }
.value-table table { border-collapse: collapse; font: 12px var(--mono); width: 100%; }
.value-table th, .value-table td { padding: 6px 10px; text-align: center; border: 0.5px solid var(--separator); white-space: nowrap; }
.value-table th { font-weight: 600; background: var(--surface-2); }
.value-table td.cell { cursor: pointer; transition: background var(--t-fast); }
.value-table td.cell:hover { background: var(--accent-tint); }
.value-table td.blank { color: transparent; background: repeating-linear-gradient(-45deg, transparent 0 4px, var(--fill) 4px 6px); }
.value-table td.blank:hover { color: var(--label-3); }

/* ── HUD und schwebende Werkzeugleiste (Glas) ── */
.hud {
  position: absolute;
  background: var(--material-glass);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border: 0.5px solid var(--material-edge);
  box-shadow: var(--shadow-float);
  border-radius: 999px;
}
.coord-display {
  top: 12px; left: 12px;
  padding: 5px 12px;
  font: 500 12px var(--mono);
  pointer-events: none;
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 200ms, transform 300ms var(--spring);
}
.coord-display.visible { opacity: 1; transform: none; }
.tool-hint {
  top: 12px; left: 50%;
  transform: translateX(-50%);
  display: flex; align-items: center; gap: 8px;
  padding: 5px 6px 5px 14px;
  font-size: 12.5px; font-weight: 500;
  max-width: calc(100% - 24px);
  white-space: nowrap;
  animation: hint-in var(--t-med) var(--spring);
}
@keyframes hint-in { from { opacity: 0; transform: translate(-50%, -8px) scale(0.96); } to { opacity: 1; transform: translateX(-50%); } }
.integral-ctl { display: inline-flex; align-items: center; gap: 8px; }
.integral-ctl[hidden] { display: none; }
.int-n { display: inline-flex; align-items: center; gap: 2px; }
.int-n[hidden] { display: none; }
.int-n input { width: 46px; height: 24px; padding: 0 4px; text-align: center; font-size: 12px; }
.int-n input::-webkit-outer-spin-button, .int-n input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.int-n input { -moz-appearance: textfield; appearance: textfield; }
.hud-step { width: 24px; height: 24px; border-radius: 50%; background: var(--fill); font-size: 15px; line-height: 1; color: var(--label); }
.hud-step:active { transform: scale(0.94); }
@media (max-width: 760px) { .tool-hint { white-space: normal; flex-wrap: wrap; border-radius: 16px; } }
.hud-close { width: 24px; height: 24px; border-radius: 50%; background: var(--fill); display: inline-flex; align-items: center; justify-content: center; color: var(--label-2); flex: none; }
.hud-close .icon { width: 13px; height: 13px; }

.tool-capsule {
  position: absolute;
  left: 50%; bottom: max(16px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  display: flex; align-items: center; gap: 4px;
  padding: 5px;
  border-radius: 18px;
  background: var(--material-glass);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border: 0.5px solid var(--material-edge);
  box-shadow: var(--shadow-float);
  max-width: calc(100% - 24px);
  overflow-x: auto;
  scrollbar-width: none;
}
.segmented-tools { background: transparent; padding: 0; gap: 2px; }
.segmented-tools > button { flex: none; min-height: 34px; width: 36px; padding: 0; border-radius: 12px; color: var(--label-2); }
.segmented-tools > button.active, :root[data-theme="dark"] .segmented-tools > button.active { background: var(--accent); color: #fff; box-shadow: none; }
.capsule-sep { width: 0.5px; align-self: stretch; margin: 6px 3px; background: var(--separator); flex: none; }
.cap-btn {
  width: 36px; height: 34px; flex: none; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--label-2);
  transition: background var(--t-fast), transform var(--t-fast) ease-out;
}
.cap-btn:hover { background: var(--fill); color: var(--label); }
.cap-btn:active, .segmented-tools > button:active { transform: scale(0.9); }

/* ── Sheets (Dialoge mit Scrim, Federbewegung) ── */
dialog.sheet {
  margin: auto;
  width: min(560px, calc(100vw - 32px));
  max-width: none;
  max-height: min(88vh, 900px);
  border: none;
  border-radius: var(--r-xl);
  background: var(--bg);
  color: var(--label);
  box-shadow: var(--shadow-sheet);
  padding: 0;
  flex-direction: column;
  opacity: 0;
  transform: translateY(24px) scale(0.98);
  transition: opacity 260ms, transform var(--t-med) var(--spring), overlay var(--t-med) allow-discrete, display var(--t-med) allow-discrete;
}
dialog.sheet[open] { display: flex; opacity: 1; transform: none; }
@starting-style { dialog.sheet[open] { opacity: 0; transform: translateY(24px) scale(0.98); } }
dialog.sheet::backdrop { background: var(--scrim); opacity: 0; transition: opacity 260ms, overlay var(--t-med) allow-discrete, display var(--t-med) allow-discrete; }
dialog.sheet[open]::backdrop { opacity: 1; }
@starting-style { dialog.sheet[open]::backdrop { opacity: 0; } }
dialog.sheet-wide { width: min(1040px, calc(100vw - 32px)); }

.sheet-head {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  padding: 14px 18px 10px;
  border-bottom: 0.5px solid var(--separator);
  background: var(--material);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  flex: none;
}
.sheet-head > :first-child { justify-self: start; }
.sheet-head > :last-child { justify-self: end; }
.sheet-head h2 { font-size: 15px; font-weight: 650; letter-spacing: -0.012em; }
.sheet-body { padding: 4px 18px 20px; overflow-y: auto; min-height: 0; }

/* Export */
.export-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 20px; padding-top: 16px; }
.export-preview { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 300px; background: var(--fill); border-radius: var(--r-lg); padding: 20px; min-width: 0; }
.preview-paper { background: #fff; box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15); border-radius: 2px; max-width: 100%; line-height: 0; overflow: hidden; }
.preview-paper svg { display: block; max-width: 100%; height: auto; max-height: 56vh; }
.preview-paper pre { line-height: 1.4; font: 11px var(--mono); padding: 12px; color: #1d1d1f; max-height: 56vh; max-width: 100%; overflow: auto; white-space: pre; }
.preview-caption { margin-top: 10px; font-size: 12px; color: var(--label-2); font-variant-numeric: tabular-nums; text-align: center; }
.export-options > .segmented { width: 100%; }
.disclosure { margin-top: 8px; }
.disclosure summary { cursor: pointer; color: var(--accent); font-size: 13px; padding: 6px 2px; list-style: none; }
.disclosure summary::-webkit-details-marker { display: none; }
.disclosure textarea { margin: 6px 0; }

/* Druckbogen */
.print-layout { display: grid; grid-template-columns: 320px minmax(0, 1fr); gap: 20px; padding-top: 12px; }
.print-options .list { margin-top: 14px; }
.print-preview-wrap { background: var(--fill); border-radius: var(--r-lg); padding: 20px; overflow: auto; max-height: 72vh; }
.a4-scale { transform-origin: top left; }
.a4 { width: 210mm; background: #fff; color: #000; box-shadow: 0 2px 16px rgba(0, 0, 0, 0.2); }
.print-thumb { width: 52px; height: 38px; border-radius: 4px; background: #fff; box-shadow: inset 0 0 0 0.5px var(--separator); display: flex; align-items: center; justify-content: center; overflow: hidden; flex: none; color: #8e8e93; }
.print-thumb svg { max-width: 100%; max-height: 100%; width: auto; height: auto; }

/* Seite (Bildschirmvorschau und Druck) */
.page { width: 210mm; min-height: 297mm; padding: 16mm 18mm; font: 11pt/1.4 var(--font); color: #000; background: #fff; }
.page + .page { border-top: 1px dashed #c7c7cc; }
.page-header { display: flex; gap: 8mm; font-size: 11pt; margin-bottom: 7mm; }
.page-header span { flex: 1; border-bottom: 0.3mm solid #000; padding-bottom: 1mm; }
.page-header span:last-child { flex: 0 0 42mm; }
.page h1 { font-size: 15pt; font-weight: 650; margin-bottom: 5mm; letter-spacing: -0.01em; }
.page-item { break-inside: avoid; page-break-inside: avoid; margin-bottom: 7mm; }
.page-item figure { display: inline-block; }
.page-item figcaption { font-size: 10pt; margin-top: 1.5mm; color: #333; }
.page-item svg { display: block; }
.page-row { display: flex; gap: 6mm; align-items: flex-start; }
.page-row > .page-item { flex: none; }
.row-note { display: block; font-size: 11.5px; color: var(--label-2); font-weight: 400; margin-top: 1px; }
.icon-btn.on { color: var(--accent); background: var(--accent-tint); }
.page-text { font-size: 11pt; }
.page-text-title { font-weight: 650; margin-bottom: 1.5mm; }
.page-text p { margin: 0 0 1mm; }
.page-item table { border-collapse: collapse; font: 11pt var(--font); }
.page-item th, .page-item td { border: 0.3mm solid #000; padding: 1.4mm 3mm; text-align: center; min-width: 12mm; height: 8mm; }
.page-item th { font-weight: 600; background: #f2f2f2; }

/* Vorlagen */
.template-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; margin-top: 12px; }
.template-card {
  text-align: left; background: var(--surface); border-radius: var(--r-lg);
  padding: 10px; display: flex; flex-direction: column; gap: 6px;
  transition: transform var(--t-fast) ease-out, box-shadow 200ms;
}
.template-card:hover { box-shadow: 0 4px 18px rgba(0, 0, 0, 0.1); }
.template-card:active { transform: scale(0.97); }
.own-templates .row { gap: 8px; }
.own-templates .row .field { flex: 1; min-width: 0; max-width: none; }
.section-title { font-size: 13px; font-weight: 600; color: var(--label-2); margin: 18px 0 0; }
.template-card.own { position: relative; cursor: pointer; }
.template-card.own .icon-btn { position: absolute; top: 4px; right: 4px; background: var(--surface); box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15); }
.template-card img { width: 100%; aspect-ratio: 8 / 5; border-radius: 8px; background: #fff; display: block; object-fit: contain; }
.thumb-empty { width: 100%; aspect-ratio: 8 / 5; border-radius: 8px; background: var(--fill); }
.template-card svg { width: 100%; height: auto; border-radius: 8px; background: #fff; display: block; }
.template-card strong { font-size: 13px; font-weight: 600; letter-spacing: -0.005em; }
.template-card span { font-size: 11.5px; color: var(--label-2); line-height: 1.35; }

/* Karopapier: Einstellung untereinander, mit Skizze */
.row-stack { flex-direction: column; align-items: stretch; gap: 6px; padding: 8px 0; }
.row-stack .field { max-width: none; }
.karo-sketch svg { display: block; width: 100%; height: auto; }

/* Hinweis zur Speicherung */
/* Kurvendiskussion */
.disc-layout { display: grid; grid-template-columns: 320px 1fr; gap: 18px; align-items: start; }
.disc-options .pair input { width: 64px; }
.disc-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 8px; }
.disc-out { background: var(--surface); border-radius: 12px; padding: 14px 18px; min-height: 200px; font-size: 14px; border: 0.5px solid var(--separator); }
.disc-sec { margin-bottom: 10px; }
.disc-sec h4 { font-size: 12px; font-weight: 650; color: var(--label-2); text-transform: uppercase; letter-spacing: 0.02em; margin: 0 0 3px; }
.disc-line { margin: 2px 0 2px 2px; overflow-x: auto; }
@media (max-width: 760px) { .disc-layout { grid-template-columns: 1fr; } }
dialog.consent-sheet { width: min(440px, calc(100vw - 32px)); }
.consent-body { padding: 26px 26px 22px; text-align: left; }
.consent-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--accent-tint); color: var(--accent); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.consent-icon .icon { width: 26px; height: 26px; }
.consent-body h2 { font-size: 19px; font-weight: 650; letter-spacing: -0.02em; line-height: 1.25; margin-bottom: 10px; }
.consent-body p { font-size: 13.5px; line-height: 1.45; margin-bottom: 8px; }
.consent-body ul { margin: 0 0 10px 20px; font-size: 13.5px; line-height: 1.5; }
.consent-body .hint { margin: 10px 0 0; }
/* Beide Möglichkeiten gleichwertig gestaltet */
.consent-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 18px; }
.consent-btn { height: 40px; font-size: 14px; }

/* Hilfe */
.help-body h3 { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.01em; color: var(--label-2); margin: 16px 4px 6px; }
.help-body table { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: var(--r-md); overflow: hidden; font-size: 12.5px; }
.help-body td { padding: 8px 12px; border-bottom: 0.5px solid var(--separator); vertical-align: top; }
.help-body tr:last-child td { border-bottom: none; }
.help-body td:first-child { white-space: nowrap; }
.help-body code { font: 11.5px var(--mono); background: var(--fill); padding: 1px 5px; border-radius: 5px; }
kbd { font: 600 11px var(--font); border-radius: 5px; padding: 1px 6px; background: var(--surface-2); box-shadow: inset 0 -1px 0 var(--separator), 0 0 0 0.5px var(--separator); }

/* ── Mitteilung (Toast) ── */
.toast {
  position: fixed; left: 50%; bottom: 88px;
  transform: translate(-50%, 12px) scale(0.96);
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--material-glass);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border: 0.5px solid var(--material-edge);
  box-shadow: var(--shadow-float);
  font-size: 13px; font-weight: 500;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms, transform var(--t-med) var(--spring);
  max-width: calc(100vw - 32px);
  text-align: center;
}
.toast.visible { opacity: 1; transform: translate(-50%, 0); }

@keyframes shake { 0%, 100% { transform: translateX(0); } 20% { transform: translateX(-5px); } 40% { transform: translateX(5px); } 60% { transform: translateX(-3px); } 80% { transform: translateX(3px); } }

.drop-overlay {
  position: fixed; inset: 0; z-index: 900;
  display: flex; align-items: center; justify-content: center;
  background: var(--scrim);
  font-size: 17px; font-weight: 600; color: #fff;
  pointer-events: none;
}

/* Inline-Texteditor im Graphen */
.svg-text-editor {
  position: absolute; z-index: 5;
  min-width: 120px;
  padding: 4px 8px;
  border-radius: 8px;
  border: none;
  background: var(--surface);
  box-shadow: 0 0 0 1px var(--accent), 0 0 0 4px var(--accent-tint), var(--shadow-float);
  font: 15px var(--font);
  outline: none;
}

#print-root { display: none; }

/* ── Kleine Bildschirme ── */
@media (max-width: 900px) {
  .tb-label, .brand-version { display: none; }
  .export-layout, .print-layout { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .toolbar { flex-wrap: wrap; gap: 6px; }
  .toolbar-spacer { display: none; }
  .title-field { flex: 1 1 120px; }
  #export-open span { display: none; }
  main { flex-direction: column; }
  #graph-panel { flex: none; height: 52vh; }
  #sidebar { width: 100%; min-width: 0; flex: 1; border-left: none; border-top: 0.5px solid var(--separator); }
  .cap-btn, .segmented-tools > button { width: 32px; }
}

/* ── Barrierefreiheit ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; transition-duration: 1ms !important; }
  dialog.sheet { transform: none !important; transition: opacity 200ms !important; }
  .btn:active, .tb-btn:active, .cap-btn:active, .btn-round:active, .template-card:active, .icon-btn:active { transform: none; }
}
@media (prefers-reduced-transparency: reduce) {
  .toolbar, .hud, .tool-capsule, .toast, .sheet-head { background: var(--surface); backdrop-filter: none; -webkit-backdrop-filter: none; }
}
@media (prefers-contrast: more) {
  :root { --separator: rgba(0, 0, 0, 0.5); --label-2: rgba(0, 0, 0, 0.8); }
  :root[data-theme="dark"] { --separator: rgba(255, 255, 255, 0.5); --label-2: rgba(255, 255, 255, 0.85); }
  .hud, .tool-capsule, .toolbar { background: var(--surface); border: 1px solid var(--separator); }
}

/* ── Druck: nur den Druckbogen ausgeben ── */
@page { size: A4; margin: 0; }
@media print {
  html, body { overflow: visible; height: auto; background: #fff; }
  #app, dialog, .toast { display: none !important; }
  #print-root { display: block !important; }
  #print-root .page { break-after: page; border: none; }
  #print-root .page:last-child { break-after: auto; }
}