/* =========================================================
   Tauchumgebungen – Layout & Stil
   Baut auf /style.css (pf-tool-main, pf-tool-frame) auf.
   Farben wie unresponsive-diver.
   ========================================================= */

.dv-tool {
  --dv-purple: #3b22a3;
  --dv-purple-ink: #2a1878;
  --dv-purple-soft: rgba(59, 34, 163, 0.08);
  --dv-yellow: #f4c542;
  --dv-yellow-soft: #fdf4d3;
  --dv-text: #333;
  --dv-muted: #5e5a70;
  --dv-hard: #c62828;
  --dv-hard-soft: #fdf1f0;
  --dv-hard-line: #e8908a;
  --dv-hard-glow: rgba(214, 86, 78, 0.55);
  --dv-rec: #1e7d6a;
  --dv-rec-soft: #e3f4ef;
  --dv-bg: #f6f5fb;
}

.pf-tool-frame.dv-tool {
  max-width: 1100px;
  padding: 24px 28px 28px;
  color: var(--dv-text);
  line-height: 1.55;
}

.dv-tool button:focus-visible,
.dv-tool .dv-hot:focus-visible {
  outline: 3px solid var(--dv-yellow);
  outline-offset: 2px;
}

.dv-head h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 10px; color: var(--dv-purple); }
.dv-intro { margin: 0 0 10px; font-size: 1.05rem; max-width: 75ch; }
.dv-scope {
  margin: 0 0 18px; padding: 10px 14px; border-radius: 10px;
  background: var(--dv-purple-soft); color: var(--dv-purple-ink); max-width: 75ch;
}

/* ---------- Umschalter ---------- */
.dv-toolbar { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: flex-start; margin-bottom: 12px; }
.dv-seg { display: inline-flex; flex: none; border-radius: 999px; overflow: hidden; border: 2px solid var(--dv-purple); }
.dv-seg button {
  border: 0; background: #fff; color: var(--dv-purple); font: inherit; font-weight: 600;
  padding: 7px 16px; cursor: pointer;
}
.dv-seg button[data-mode="training"][aria-pressed="true"] { background: var(--dv-purple); color: #fff; box-shadow: inset 0 0 0 2px var(--dv-hard-line); }
.dv-seg button[data-mode="cert"][aria-pressed="true"] { background: var(--dv-rec); color: #fff; }


/* ---------- Layout ---------- */
.dv-layout { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 18px; align-items: start; }
@media (max-width: 980px) { .dv-layout { grid-template-columns: 1fr; } }

.dv-scene { border-radius: 16px; overflow: hidden; box-shadow: 0 4px 18px rgba(42, 24, 120, 0.12); background: #fff; }
.dv-scene svg { display: block; width: 100%; height: auto; font-family: "Segoe UI", "Trebuchet MS", system-ui, sans-serif; }

/* ---------- Szene: Texte ---------- */
.dv-zt { font-size: 14px; font-weight: 700; fill: var(--dv-purple-ink); }
.dv-zs { font-size: 11.5px; fill: var(--dv-purple-ink); }
.dv-light { fill: #fff; }
.dv-strong { font-weight: 700; }
.dv-icon-t { font-size: 11px; font-weight: 600; fill: var(--dv-purple-ink); }

/* ---------- Szene: klickbar ---------- */
.dv-hot { cursor: pointer; }
.dv-hot:focus { outline: none; }
.dv-zone { fill: var(--dv-yellow); fill-opacity: 0; transition: fill-opacity .2s; }
.dv-hot:hover .dv-zone, .dv-hot.dv-active .dv-zone { fill-opacity: .3; }
.dv-hot:focus-visible .dv-zone, .dv-hot:focus-visible .dv-chip-bg, .dv-hot:focus-visible .dv-icon-bg { stroke: var(--dv-yellow); stroke-width: 4; }

.dv-label .dv-chip-bg { fill: #fff; stroke: var(--dv-purple); stroke-width: 2; }
.dv-label.dv-dashed .dv-chip-bg { fill-opacity: .88; stroke-width: 1.5; stroke-dasharray: 4 3; }
.dv-label .dv-chip-t { fill: var(--dv-purple); font-size: 12.5px; }
.dv-label .dv-chip-t.dv-b { font-size: 15px; font-weight: 700; }
.dv-label:hover .dv-chip-bg, .dv-label.dv-active .dv-chip-bg { fill: var(--dv-yellow); fill-opacity: 1; }

.dv-icon-bg { fill: #fff; stroke: var(--dv-purple); stroke-width: 2; }
.dv-icon:hover .dv-icon-bg, .dv-icon.dv-active .dv-icon-bg { fill: var(--dv-yellow); }

/* Tiefenmarken: Farbe wird nach unten dunkler (env-data.js, tone/ink).
   Im Kurs: sanfter roter Rahmen mit Schein. Danach: grüner gestrichelter Rahmen. */
.dv-depthline { stroke-width: 2; }
.dv-mark .dv-depth { font-size: 14px; font-weight: 800; }
.dv-mark .dv-sub { font-size: 11.5px; }
.dv-lock { font-size: 12px; }

.dv-mode-training .dv-depthline { stroke: #ffc9c4; stroke-opacity: .85; }
.dv-mode-training .dv-mark .dv-chip-bg { stroke: var(--dv-hard-line); stroke-width: 2; filter: drop-shadow(0 0 3px var(--dv-hard-glow)); }

.dv-mode-cert .dv-depthline { stroke: #b9f3e4; stroke-dasharray: 7 6; }
.dv-mode-cert .dv-mark .dv-chip-bg { stroke: #7fd8bf; stroke-width: 2; stroke-dasharray: 5 4; }
.dv-mode-cert .dv-lock { display: none; }
.dv-mode-cert .dv-mark .dv-depth, .dv-mode-cert .dv-mark .dv-sub { transform: translateX(-20px); }
.dv-mode-cert .dv-mark[data-cert="0"] { display: none; }

.dv-mark:hover .dv-depthline, .dv-mark.dv-active .dv-depthline { stroke: var(--dv-yellow); stroke-opacity: 1; stroke-width: 4; stroke-dasharray: none; }
.dv-mark:hover .dv-chip-bg, .dv-mark.dv-active .dv-chip-bg { fill: var(--dv-yellow); }
.dv-mark:hover .dv-chip-t, .dv-mark.dv-active .dv-chip-t { fill: var(--dv-purple-ink); }

/* Kleine Bewegung, abschaltbar */
@keyframes dv-bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }
@keyframes dv-bubble { 0% { transform: translateY(0); opacity: .9; } 100% { transform: translateY(-60px); opacity: 0; } }
@keyframes dv-fish { 0% { transform: translateX(0); } 100% { transform: translateX(-30px); } }
.dv-bob { animation: dv-bob 3.5s ease-in-out infinite; }
.dv-bubbles circle { animation: dv-bubble 3s linear infinite; }
.dv-bubbles circle:nth-child(2) { animation-delay: 1s; }
.dv-bubbles circle:nth-child(3) { animation-delay: 2s; }
.dv-fish { animation: dv-fish 6s ease-in-out infinite alternate; }
@media (prefers-reduced-motion: reduce) {
  .dv-bob, .dv-bubbles circle, .dv-fish { animation: none; }
}

/* ---------- Detailkarte ---------- */
.dv-card {
  background: #fff; border: 1px solid #e6e3f2; border-radius: 16px; padding: 18px 20px;
  position: sticky; top: 12px; min-height: 300px; scroll-margin-top: 12px;
}
.dv-kicker { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--dv-muted); }
.dv-card h2 { margin: 2px 0 10px; color: var(--dv-purple); font-size: 1.35rem; line-height: 1.25; }
.dv-card ul { margin: 0 0 12px; padding-left: 20px; }
.dv-card li { margin-bottom: 5px; }
.dv-note { color: var(--dv-muted); font-style: italic; }

.dv-tag {
  display: inline-block; margin-left: 8px; padding: 0 8px; border-radius: 999px;
  font-size: .72rem; letter-spacing: .03em; text-transform: none; vertical-align: 1px;
}
.dv-tag-hard { color: #8e2b25; background: var(--dv-hard-soft); border: 1px solid var(--dv-hard-line); }
.dv-tag-rec { color: #134e43; background: var(--dv-rec-soft); border: 1px dashed var(--dv-rec); }

/* Einmalige Erklärung unter dem Umschalter */
.dv-explain { flex: 1 1 320px; margin: 0; padding: 8px 12px; border-radius: 10px; font-size: .93rem; }
.dv-explain .dv-ct { display: block; }
.dv-explain-hard { background: var(--dv-hard-soft); border: 1px solid var(--dv-hard-line); box-shadow: 0 0 6px rgba(214, 86, 78, 0.18); }
.dv-explain-rec { background: var(--dv-rec-soft); border: 1px dashed var(--dv-rec); color: #134e43; }

.dv-callout { border-radius: 10px; padding: 10px 12px; margin: 10px 0 12px; font-size: .94rem; }
.dv-callout .dv-ct { display: block; margin-bottom: 2px; }
.dv-warn { background: var(--dv-hard-soft); border-left: 5px solid var(--dv-hard-line); }
.dv-merke { background: var(--dv-yellow-soft); border-left: 5px solid var(--dv-yellow); }

.dv-related { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 12px; }
.dv-related button, .dv-list button {
  font: inherit; font-size: .86rem; border: 1.5px solid var(--dv-purple); color: var(--dv-purple);
  background: #fff; border-radius: 999px; padding: 3px 11px; cursor: pointer;
}
.dv-related button:hover, .dv-list button:hover { background: var(--dv-purple); color: #fff; }

.dv-src { border-top: 1px solid #e6e3f2; padding-top: 10px; font-size: .86rem; }
.dv-src ul { list-style: none; padding: 0; margin: 6px 0 0; }
.dv-src li { margin-bottom: 7px; }
.dv-ref-orig { display: block; color: var(--dv-purple-ink); font-weight: 600; }
.dv-ref-tr { display: block; color: var(--dv-muted); }

/* ---------- Liste (vor allem fürs Handy) ---------- */
.dv-list { margin-top: 16px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.dv-list h3 { font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; color: var(--dv-muted); margin: 0 0 6px; }
.dv-list-group > div { display: flex; flex-wrap: wrap; gap: 6px; }
@media (max-width: 720px) { .dv-list { grid-template-columns: 1fr; } }

/* ---------- Dreimal "tief" ---------- */
.dv-three { margin-top: 20px; background: var(--dv-bg); border-radius: 16px; padding: 18px 20px; }
.dv-three h3 { margin: 0 0 4px; color: var(--dv-purple); font-size: 1.2rem; }
.dv-three p { margin: 0 0 12px; color: var(--dv-muted); }
.dv-three-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
@media (max-width: 720px) { .dv-three-grid { grid-template-columns: 1fr; } }
.dv-three-grid button {
  text-align: left; font: inherit; color: inherit; background: #fff; border: 2px solid transparent;
  border-radius: 14px; padding: 12px 14px; cursor: pointer;
}
.dv-three-grid button:hover { border-color: var(--dv-purple); }
.dv-big { display: block; font-size: 1.5rem; font-weight: 800; color: var(--dv-purple); }
.dv-term { display: block; font-weight: 700; }

.dv-foot { margin-top: 18px; font-size: .85rem; color: var(--dv-muted); }
.dv-error { color: var(--dv-hard); font-weight: 600; }

@media (max-width: 600px) {
  .pf-tool-frame.dv-tool { padding: 12px; }
  .dv-head h1 { font-size: 1.45rem; }
}