/* ============================================================
   Struktogramm-Werkbank · leichtlernbar.de
   Designsprache angelehnt an die SQL-Werkbank
   ============================================================ */

:root {
  --font-ui: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, "Cascadia Code", Consolas, monospace;

  /* Light */
  --bg: #f5f7f6;
  --grid: #e8edeb;
  --panel: #ffffff;
  --panel-2: #f1f4f3;
  --border: #e2e7e5;
  --border-strong: #cdd6d3;
  --text: #12211c;
  --muted: #66756f;
  --accent: #059669;
  --accent-strong: #047857;
  --accent-soft: #d9f3e8;
  --accent-contrast: #ffffff;
  --danger: #dc2626;
  --danger-soft: #fdecec;
  --shadow: 0 1px 2px rgba(15, 40, 30, .05), 0 8px 24px rgba(15, 40, 30, .07);
  --shadow-pop: 0 4px 10px rgba(15, 40, 30, .08), 0 16px 40px rgba(15, 40, 30, .16);

  /* Struktogramm */
  --nsd-line: #22332d;
  --nsd-fill: #ffffff;
  --nsd-head: #eef6f2;
  --nsd-text: #12211c;
  --nsd-muted: #66756f;
  --nsd-ph: #9fb0aa;
  --nsd-tint-rgb: 5, 150, 105;
  --nsd-tint-loop-rgb: 37, 99, 235;
  --nsd-tint-a: 0.07 0.05 0.27;
  --sel: #059669;
  --sel-soft: rgba(5, 150, 105, .10);
}

html[data-theme="dark"] {
  --bg: #0b100f;
  --grid: rgba(52, 211, 153, .055);
  --panel: #131a18;
  --panel-2: #182220;
  --border: #243230;
  --border-strong: #33453f;
  --text: #e7f0ec;
  --muted: #8aa19a;
  --accent: #2ee6a8;
  --accent-strong: #34d399;
  --accent-soft: rgba(46, 230, 168, .12);
  --accent-contrast: #062c1f;
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, .12);
  --shadow: 0 1px 2px rgba(0, 0, 0, .35), 0 8px 24px rgba(0, 0, 0, .35);
  --shadow-pop: 0 4px 10px rgba(0, 0, 0, .4), 0 20px 50px rgba(0, 0, 0, .55);

  --nsd-line: #b9cfc7;
  --nsd-fill: #131a18;
  --nsd-head: #1a2522;
  --nsd-text: #e7f0ec;
  --nsd-muted: #8aa19a;
  --nsd-ph: #4d635c;
  --nsd-tint-rgb: 4, 120, 87;
  --nsd-tint-loop-rgb: 29, 78, 216;
  --nsd-tint-a: 0.30 0.14 0.78;
  --sel: #2ee6a8;
  --sel-soft: rgba(46, 230, 168, .10);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

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

body {
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

button { font-family: inherit; color: inherit; }
svg { display: block; }

/* ---------- Topbar ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  z-index: 30;
}

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-icon svg { width: 38px; height: 38px; }
.brand-name {
  font-size: 19px;
  font-weight: 750;
  letter-spacing: -.02em;
  white-space: nowrap;
}
.brand-name span { color: var(--accent); }
html[data-theme="dark"] .brand-name span { color: var(--accent-strong); }
.brand-sub {
  font-size: 11.5px;
  color: var(--muted);
  font-weight: 550;
  margin-top: -1px;
  white-space: nowrap;
}

.doc-name-wrap { flex: 1; display: flex; justify-content: flex-start; padding-left: 8px; min-width: 0; }
.doc-name {
  font: 600 14.5px var(--font-ui);
  color: var(--text);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 11px;
  padding: 8px 14px;
  max-width: 340px;
  width: 100%;
  transition: border-color .15s, background .15s;
}
.doc-name:hover { border-color: var(--border); }
.doc-name:focus { outline: none; border-color: var(--accent); background: var(--panel); }

.doc-switch {
  border: 1px solid transparent;
  background: transparent;
  border-radius: 10px;
  padding: 7px 6px;
  margin-left: -34px;
  cursor: pointer;
  color: var(--muted);
  transition: background .13s, color .13s;
}
.doc-switch:hover { background: var(--panel-2); color: var(--text); }
.doc-switch svg { width: 15px; height: 15px; }
.doc-name { padding-right: 36px; }

#menuDocs { min-width: 250px; max-width: 340px; }
#menuDocs .doc-current { color: var(--accent-strong); }
#menuDocs button span.check { float: right; margin-left: 14px; }

.topbar-actions { display: flex; gap: 10px; align-items: center; }

.btn-group {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: var(--panel);
}
.btn-group .btn { border-radius: 0; border: 0; }
.btn-group .btn + .btn { border-left: 1px solid var(--border); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  font-size: 13.5px;
  font-weight: 600;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  white-space: nowrap;
  transition: background .13s;
}
.btn:hover { background: var(--panel-2); }
.btn:active { transform: translateY(.5px); }
.btn svg { width: 17px; height: 17px; flex: none; }
.btn .caret { width: 13px; height: 13px; margin: 0 -3px 0 -2px; opacity: .55; }
.btn.icon-only { padding: 9px 11px; }
.btn.accent {
  background: var(--accent);
  color: var(--accent-contrast);
  border-color: transparent;
}
.btn.accent:hover { background: var(--accent-strong); }

.ico-sun { display: none; }
html[data-theme="dark"] .ico-sun { display: block; color: #f5a623; }
html[data-theme="dark"] .ico-moon { display: none; }
.ico-moon { color: #2563eb; }

/* ---------- Werkzeugleiste ---------- */

.toolbar-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 12px 16px 2px;
  flex-wrap: wrap;
  z-index: 20;
}

.palette, .edit-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 5px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 15px;
  box-shadow: var(--shadow);
}

.tool {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 620;
  color: var(--text);
  background: transparent;
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  white-space: nowrap;
  transition: background .13s, color .13s;
}
.tool:hover { background: var(--panel-2); }
.tool svg { width: 21px; height: 16px; flex: none; opacity: .9; }
.tool.icon-only svg { width: 17px; height: 17px; }
.tool.primary {
  background: var(--accent);
  color: var(--accent-contrast);
}
.tool.primary:hover { background: var(--accent-strong); }
.tool.danger { color: var(--danger); }
.tool.danger:hover { background: var(--danger-soft); }
.tool:disabled { opacity: .35; cursor: default; }
.tool:disabled:hover { background: transparent; }

.tool-sep {
  width: 1px;
  align-self: stretch;
  margin: 4px 4px;
  background: var(--border);
}

.tool.zoom-reset {
  min-width: 54px;
  justify-content: center;
  padding: 8px 6px;
  font-variant-numeric: tabular-nums;
}

/* ---------- Arbeitsfläche ---------- */

.workspace {
  flex: 1;
  display: flex;
  min-height: 0;
  padding: 12px 16px 16px;
  gap: 14px;
}

.canvas-wrap {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.canvas-scroll {
  flex: 1;
  overflow: auto;
  touch-action: pan-x pan-y;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  border-radius: 16px;
  border: 1px solid var(--border);
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 26px 26px;
  background-color: var(--bg);
}

.canvas-host {
  min-width: 100%;
  min-height: 100%;
  display: flex;
  justify-content: center;
  padding: 44px 40px 80px;
  width: max-content;
}

.canvas-host svg { overflow: visible; }

.nsd-hit { cursor: pointer; }
.nsd-edit-input,
.glossar-bsp,
.glossar-py,
.charbar button {
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0, "calt" 0;
}

.nsd-edit-input {
  position: absolute;
  z-index: 40;
  font: 500 13.5px var(--font-mono);
  color: var(--text);
  background: var(--panel);
  border: 1.6px solid var(--accent);
  border-radius: 6px;
  padding: 3px 8px;
  box-shadow: var(--shadow-pop);
  outline: none;
}

.edit-hint {
  position: absolute;
  z-index: 41;
  font: 500 11.5px var(--font-ui);
  color: var(--muted);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 4px 9px;
  box-shadow: var(--shadow);
  pointer-events: none;
  white-space: nowrap;
}

.charbar {
  position: absolute;
  z-index: 41;
  display: flex;
  gap: 2px;
  padding: 4px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow-pop);
}
.charbar button {
  font: 600 14px var(--font-mono);
  border: 0;
  background: transparent;
  border-radius: 7px;
  padding: 3px 9px;
  cursor: pointer;
}
.charbar button:hover { background: var(--accent-soft); color: var(--accent-strong); }

.drop-indicator {
  position: absolute;
  z-index: 35;
  pointer-events: none;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 0 1.5px var(--panel);
}
.drop-indicator.fill {
  background: var(--accent-soft);
  border: 1.6px dashed var(--accent);
  border-radius: 6px;
  box-shadow: none;
}

.drag-ghost {
  position: fixed;
  z-index: 80;
  pointer-events: none;
  font: 500 12.5px var(--font-mono);
  font-variant-ligatures: none;
  color: var(--text);
  background: var(--panel);
  border: 1.4px solid var(--accent);
  border-radius: 8px;
  padding: 5px 10px;
  box-shadow: var(--shadow-pop);
  opacity: .95;
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

body.dragging, body.dragging * { cursor: grabbing !important; }

.statusbar {
  margin-top: 10px;
  padding: 10px 16px;
  font-size: 13px;
  color: var(--muted);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 13px;
}

/* ---------- Glossar ---------- */

.glossar {
  width: 330px;
  flex: none;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.glossar[hidden] { display: none; }

.glossar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px 10px;
}
.glossar-title { font-size: 15px; font-weight: 700; }
.glossar-sub { font-size: 11.5px; color: var(--muted); margin-top: 2px; }

.glossar-search {
  margin: 0 14px 10px;
  padding: 8px 12px;
  font: 500 13px var(--font-ui);
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
}
.glossar-search:focus { border-color: var(--accent); }

.glossar-list { overflow-y: auto; padding: 0 14px 14px; }

.glossar-cat {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--accent-strong);
  margin: 16px 2px 6px;
}
.glossar-item {
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 11px;
  margin-bottom: 7px;
  background: var(--panel);
}
.glossar-op {
  font: 600 12.5px var(--font-mono);
  color: var(--text);
}
.glossar-desc { font-size: 12.5px; color: var(--muted); margin-top: 3px; line-height: 1.45; }
.glossar-bsp {
  font: 500 12px var(--font-mono);
  color: var(--accent-strong);
  background: var(--accent-soft);
  border-radius: 7px;
  padding: 4px 8px;
  margin-top: 6px;
  white-space: pre-wrap;
  word-break: break-word;
}
.glossar-py {
  display: flex;
  align-items: center;
  gap: 7px;
  font: 500 12px var(--font-mono);
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 4px 8px;
  margin-top: 5px;
  white-space: pre-wrap;
  word-break: break-word;
}
.glossar-py span {
  font: 700 9.5px var(--font-ui);
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
  flex: none;
}
.glossar-hint {
  font-size: 11.5px;
  color: var(--muted);
  line-height: 1.45;
  margin-top: 6px;
}
.glossar-note {
  font-size: 11.5px;
  color: var(--muted);
  padding: 10px 2px 2px;
  line-height: 1.5;
}

/* ---------- Menüs ---------- */

.menu {
  position: fixed;
  z-index: 60;
  min-width: 210px;
  padding: 6px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 13px;
  box-shadow: var(--shadow-pop);
}
.menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 9px 12px;
  font-size: 13.5px;
  font-weight: 550;
  border: 0;
  background: transparent;
  border-radius: 8px;
  cursor: pointer;
}
.menu button:hover { background: var(--accent-soft); color: var(--accent-strong); }
.menu hr { border: 0; border-top: 1px solid var(--border); margin: 5px 8px; }
.menu button:disabled { opacity: .4; cursor: default; }
.menu button:disabled:hover { background: transparent; color: inherit; }
.menu button.danger:hover { background: var(--danger-soft); color: var(--danger); }
.menu button kbd {
  float: right;
  font: 500 11px var(--font-ui);
  color: var(--muted);
  margin-left: 18px;
}

.menu-settings { min-width: 280px; }
.menu-sec {
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--muted);
  padding: 8px 12px 3px;
}
.menu-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 550;
}
.menu-row:hover { background: var(--panel-2); }
.menu-row input { margin-top: 3px; accent-color: var(--accent); }
.menu-row small {
  display: block;
  font-size: 11.5px;
  font-weight: 450;
  color: var(--muted);
  margin-top: 2px;
  line-height: 1.35;
}

/* ---------- Dialoge ---------- */

.dlg {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--panel);
  color: var(--text);
  padding: 0;
  width: min(480px, calc(100vw - 48px));
  box-shadow: var(--shadow-pop);
}
.dlg::backdrop { background: rgba(8, 14, 12, .45); backdrop-filter: blur(2px); }

.dlg-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px 8px;
}
.dlg-title { font-size: 16px; font-weight: 700; }
.dlg-body { padding: 8px 18px 18px; }
.dlg-footer { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }

.dlg-input {
  width: 100%;
  padding: 10px 13px;
  font: 550 14px var(--font-ui);
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 11px;
  outline: none;
}
.dlg-input:focus { border-color: var(--accent); }

.file-list { display: flex; flex-direction: column; gap: 7px; max-height: 320px; overflow-y: auto; }
.file-empty { color: var(--muted); font-size: 13.5px; padding: 18px 4px; text-align: center; }
.file-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: border-color .13s, background .13s;
}
.file-row:hover { border-color: var(--accent); background: var(--accent-soft); }
.file-row-name { font-weight: 650; font-size: 13.5px; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-row-date { font-size: 11.5px; color: var(--muted); flex: none; }
.file-row-del {
  border: 0; background: transparent; color: var(--muted);
  border-radius: 8px; padding: 5px; cursor: pointer; flex: none;
}
.file-row-del:hover { color: var(--danger); background: var(--danger-soft); }
.file-row-del svg { width: 15px; height: 15px; }

/* ---------- Druck ---------- */

#printArea { display: none; }

@media print {
  body > *:not(#printArea) { display: none !important; }
  body { overflow: visible; background: #fff; display: block; }
  #printArea { display: block; padding: 2mm 4mm 14mm; color: #000; }
  .print-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding-bottom: 5mm;
    margin-bottom: 7mm;
    border-bottom: 1px solid #c9cfcc;
  }
  .print-brand { display: flex; align-items: center; gap: 8px; }
  .print-brand svg { width: 30px; height: 30px; }
  .print-brand-name { font-size: 13px; font-weight: 700; color: #a8b2ae; letter-spacing: -.01em; }
  .print-brand-sub { font-size: 10px; font-weight: 550; color: #a8b2ae; margin-top: -1px; }
  .print-notiz { font-size: 12px; color: #000; white-space: nowrap; }
  .print-svg svg { max-width: 100%; height: auto; }
  .print-foot {
    position: fixed;
    bottom: 0;
    left: 4mm;
    right: 4mm;
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    color: #8a938f;
    padding-top: 2mm;
  }
}

/* ---------- Responsive (iPad quer u. kleiner) ---------- */

@media (max-width: 1280px) {
  .tool span { display: none; }
  .tool { padding: 8px 10px; }
  .brand-sub { display: none; }
}

@media (max-width: 1000px) {
  .btn span { display: none; }
  .btn { padding: 9px 11px; }
  .btn .caret { display: none; }
  .doc-name { max-width: 200px; }
  .glossar { position: fixed; right: 12px; top: 66px; bottom: 12px; width: min(330px, calc(100vw - 24px)); z-index: 50; }
}