/* ==========================================================================
   Remo · горно ідей. Обсидіан — чорне скло, під яким бурлить розплав.
   Кораблик іде по колу довкола живого вулкана. Тепло, рух є завжди — стримано.
   Жодного емоджі. Mobile-first. День ↔ ніч.
   Назви змінних історичні (--green тощо), значення — обсидіаново-магмові.
   ========================================================================== */
:root {
  /* День — прохолодний попіл/базальт: нейтральна світла порода, ембер лише в акценті */
  --bg-top: #f0f0ef;
  --bg-mid: #e7e8e9;
  --bg-low: #dee0e2;
  --bg-horizon: #d1d4d8;
  --light-glow: rgba(190, 125, 75, 0.05);
  --magma-hot: rgba(188, 126, 80, 0.08);
  --magma-mid: rgba(148, 92, 58, 0.04);
  --firefly: #b98a5e;
  --spark: #9c6038;
  --spark-glow: rgba(156, 96, 56, 0.20);

  --ink: #23252a;
  --ink-soft: #50545b;
  --ink-faint: #6e737b;

  --green: #9c5e38;          /* приглушений теракотовий акцент (кнопки/лінки) */
  --green-deep: #7c4326;     /* заголовки — глибша глина */
  --green-soft: #b0744c;     /* м’який теракот */
  --mist: #eaebed;           /* прохолодна плашка-чип */

  --card: rgba(255, 255, 255, 0.62);
  --card-solid: rgba(250, 251, 252, 0.92);
  --edge: rgba(72, 80, 92, 0.16);
  --edge-strong: rgba(72, 80, 92, 0.30);

  /* кораблик — монолінійний знак */
  --v-stroke: rgba(42, 46, 54, 0.6);    /* прохолодний контур кораблика */
  --ember: #a06640;                      /* приглушений ембер-акцент */
  --flag: #a06640;                       /* прапорець */

  --radius: 20px;
  --radius-sm: 14px;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, system-ui, sans-serif;
  --nav-h: 64px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --shadow: 0 12px 34px rgba(40, 44, 52, 0.14);
  --shadow-soft: 0 5px 18px rgba(40, 44, 52, 0.10);
}

html.night {
  /* Ніч — прохолодний обсидіан: графітово-чорне скло; ембер лише в акценті/жеврінні. */
  --bg-top: #0c0d0f;
  --bg-mid: #101113;
  --bg-low: #141518;
  --bg-horizon: #191b1f;
  --light-glow: rgba(205, 140, 88, 0.07);
  --magma-hot: rgba(200, 136, 86, 0.13);
  --magma-mid: rgba(130, 74, 46, 0.08);
  --firefly: #c7a070;
  --spark: #c89a68;
  --spark-glow: rgba(200, 154, 104, 0.24);

  --ink: #e9eaec;
  --ink-soft: #a6a8ad;
  --ink-faint: #74767c;

  --green: #c89a6c;
  --green-deep: #d8b793;
  --green-soft: #c2926a;
  --mist: #1b1d21;

  --card: rgba(22, 24, 27, 0.55);
  --card-solid: rgba(13, 14, 16, 0.92);
  --edge: rgba(196, 204, 216, 0.12);
  --edge-strong: rgba(196, 204, 216, 0.26);

  --v-stroke: rgba(222, 226, 232, 0.5);
  --ember: #cda06a;
  --flag: #cda06a;
  --shadow: 0 10px 38px rgba(0, 0, 0, 0.66);
  --shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.48);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
html, body { margin: 0; padding: 0; min-height: 100%; }
body {
  font-family: var(--sans); color: var(--ink); background: var(--bg-top);
  line-height: 1.55; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden; transition: background-color 0.7s ease, color 0.4s ease;
}
button, input, textarea { font-family: inherit; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.ico { width: 1.15em; height: 1.15em; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex: none; display: inline-block; vertical-align: -0.18em; }

/* ==========================================================================
   Обсидіановий світ: фон, що дихає; магма-жила, що бурлить унизу
   ========================================================================== */
.sky {
  position: fixed; inset: 0; z-index: -2; overflow: hidden;
  background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 48%, var(--bg-low) 80%, var(--bg-horizon) 100%);
  transition: background 0.7s ease;
}
/* Жар, що дихає, підіймається знизу-центру — натяк на розплав під породою */
.glow {
  position: absolute; left: 50%; bottom: -26%; width: 122vw; height: 50vh; transform: translateX(-50%);
  background: radial-gradient(ellipse at center, var(--light-glow) 0%, transparent 66%);
  filter: blur(24px); pointer-events: none; transition: opacity 0.7s ease;
  animation: breathe 11s ease-in-out infinite;
}
@keyframes breathe { 0%,100% { opacity: 0.66; transform: translateX(-50%) scaleY(1); } 50% { opacity: 1; transform: translateX(-50%) scaleY(1.08); } }
/* Тепле віддзеркалення згори */
.skylight {
  position: absolute; top: -22%; right: -12%; width: 62vw; height: 44vh; pointer-events: none;
  background: radial-gradient(ellipse at center, var(--light-glow) 0%, transparent 62%);
  filter: blur(22px); opacity: 0.55; transition: opacity 0.7s ease;
}
html.night .skylight { opacity: 0.45; }
/* Тепла порода біля підніжжя */
.lava {
  position: absolute; left: 0; right: 0; bottom: 0; height: 32vh; pointer-events: none;
  background: radial-gradient(120% 100% at 50% 150%, var(--light-glow) 0%, transparent 60%);
  opacity: 0.5; filter: blur(10px); transition: opacity 0.7s ease;
}
html.night .lava { opacity: 0.72; }
/* МАГМА-ЖИЛА: смуга розплаву внизу, що бурлить і дихає (серце "бурління") */
.magma-seam {
  position: absolute; left: -12%; right: -12%; bottom: -4vh; height: 22vh; pointer-events: none;
  background:
    radial-gradient(60% 120% at 22% 130%, var(--magma-hot) 0%, transparent 60%),
    radial-gradient(58% 120% at 54% 138%, var(--magma-mid) 0%, transparent 58%),
    radial-gradient(64% 120% at 82% 132%, var(--magma-hot) 0%, transparent 60%);
  filter: blur(18px);
  opacity: 0.34;
  transition: opacity 0.7s ease;
  animation: churn 15s ease-in-out infinite;
  will-change: transform, opacity;
}
html.night .magma-seam { opacity: 0.5; }
@keyframes churn {
  0%,100% { transform: translateX(0) scaleY(1); opacity: var(--seam-lo, 0.3); }
  50%     { transform: translateX(-2%) scaleY(1.08); opacity: var(--seam-hi, 0.42); }
}
html.night { --seam-lo: 0.42; --seam-hi: 0.6; }

#ambient { position: absolute; inset: 0; pointer-events: none; }
/* Вуглинки, що повільно злітають угору — наче скипають із розплаву */
.seed-float { position: absolute; opacity: 0; will-change: transform, opacity; color: var(--firefly); }
.seed-float svg { width: 100%; height: 100%; display: block; filter: drop-shadow(0 0 5px var(--spark-glow)); }
@keyframes drift {
  0% { transform: translateY(0) translateX(0) rotate(0deg); opacity: 0; }
  14% { opacity: 0.46; } 86% { opacity: 0.3; }
  100% { transform: translateY(-118vh) translateX(var(--dx, 40px)) rotate(170deg); opacity: 0; }
}
/* Іскри-вуглинки (переважно вночі) */
.firefly {
  position: absolute; width: 5px; height: 5px; border-radius: 50%; opacity: 0;
  background: radial-gradient(circle, #fff3cf 0%, var(--firefly) 50%, transparent 76%);
  box-shadow: 0 0 10px 2px var(--spark-glow); will-change: transform, opacity;
}
@keyframes fly {
  0% { transform: translate(0, 0); } 25% { transform: translate(20px, -26px); }
  50% { transform: translate(-14px, -48px); } 75% { transform: translate(12px, -70px); }
  100% { transform: translate(-4px, -92px); }
}
@keyframes blink { 0%,100% { opacity: 0; } 18% { opacity: 0.95; } 46% { opacity: 0.3; } 72% { opacity: 0.85; } }
html:not(.night) .firefly { display: none; }
html.night .seed-float { display: none; }

/* ==========================================================================
   Каркас і шапка
   ========================================================================== */
.app {
  max-width: 640px; margin: 0 auto;
  padding: calc(env(safe-area-inset-top, 0px) + 20px) 18px calc(env(safe-area-inset-bottom, 0px) + var(--nav-h) + 30px);
}
.header { text-align: center; margin-bottom: 6px; }
.brand {
  display: inline-flex; align-items: center; gap: 11px; margin: 0;
  font-family: var(--serif); font-weight: 400; font-size: 2.35rem; letter-spacing: 0.03em;
  color: var(--green-deep); text-shadow: 0 2px 22px rgba(170, 110, 64, 0.18);
}
.brand-ico { width: 0.9em; height: 0.9em; fill: none; stroke: var(--green); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; filter: drop-shadow(0 0 8px var(--spark-glow)); }
.brand-sub { margin: 4px 0 0; font-size: 0.74rem; letter-spacing: 0.2em; text-transform: lowercase; color: var(--ink-faint); }

.prompt {
  font-family: var(--serif); font-style: italic; font-size: 1.2rem; text-align: center; color: var(--green-deep);
  margin: 10px auto 16px; max-width: 30ch; min-height: 2.8em;
  display: flex; align-items: center; justify-content: center; line-height: 1.4;
  text-shadow: 0 1px 14px rgba(170, 110, 64, 0.13);
  transition: opacity 0.45s var(--ease);
}

.view { display: none; }
.view.active { display: block; animation: fade-in 0.4s var(--ease); }
@keyframes fade-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ==========================================================================
   Вулкан (центр всесвіту) + кораблик по колу
   ========================================================================== */
.boat-wrap {
  width: min(216px, 56vw); height: min(216px, 56vw); margin: 8px auto 6px; cursor: pointer; user-select: none;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.boat-wrap:active { transform: scale(0.98); }
.boat-wrap:focus-visible { outline: 2px solid var(--green-soft); outline-offset: 6px; border-radius: 16px; }
.boat-wrap svg { width: 100%; height: 100%; overflow: visible; }
/* монолінійний кораблик-знак */
.boat-wrap svg .b-line { stroke: var(--v-stroke); }
.boat-wrap svg .water { stroke: var(--v-stroke); opacity: 0.4; animation: tide 9s ease-in-out infinite; }
@keyframes tide { 0%,100% { transform: translateX(0); } 50% { transform: translateX(-3px); } }
.boat-wrap svg .flag { fill: var(--flag); }
.boat-wrap svg .cargo { fill: var(--ember); }
/* тихий відгук на дотик перед переходом */
.boat-wrap.sail { transform: translateY(-6px); opacity: 0.7; }

/* ==========================================================================
   Картка-скло: кинути в горно
   ========================================================================== */
.capture {
  background: var(--card); border: 1px solid var(--edge); border-radius: var(--radius);
  padding: 16px 18px; backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); box-shadow: var(--shadow-soft);
}
.capture-input {
  width: 100%; border: none; background: transparent; color: var(--ink); font-size: 1.12rem; line-height: 1.5;
  resize: none; outline: none; overflow: hidden; min-height: 1.5em;
}
.capture-input::placeholder { color: var(--ink-faint); }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 12px; border-top: 1px solid var(--edge); padding-top: 12px; }
.tag-input { border: none; outline: none; background: transparent; font-size: 0.95rem; flex: 1; min-width: 130px; color: var(--ink); }
.tag-input::placeholder { color: var(--ink-faint); }
.chip { display: inline-flex; align-items: center; gap: 6px; background: var(--mist); color: var(--green-deep); border-radius: 999px; padding: 4px 11px; font-size: 0.8rem; }
.chip b { cursor: pointer; opacity: 0.55; font-weight: 700; }
.chip b:hover { opacity: 1; }
.capture-foot { display: flex; align-items: center; gap: 14px; margin-top: 16px; flex-wrap: wrap; }
.hint { color: var(--ink-faint); font-size: 0.82rem; }

.primary {
  border: none; color: #fff; font-size: 0.98rem; font-weight: 600; padding: 11px 24px; border-radius: 999px; cursor: pointer;
  background: linear-gradient(180deg, var(--green-soft), var(--green)); box-shadow: 0 4px 14px rgba(140, 90, 52, 0.22);
  transition: transform 0.08s var(--ease), filter 0.2s, box-shadow 0.2s;
}
.primary:hover { filter: brightness(1.06); box-shadow: 0 6px 18px rgba(140, 90, 52, 0.30); }
.primary:active { transform: scale(0.97); }
html.night .primary { color: #2a0d05; }

/* ==========================================================================
   Зустріч: режими подачі + зіткнення
   ========================================================================== */
.mode-switch {
  display: flex; gap: 5px; padding: 5px; margin: 0 auto 10px; max-width: 420px;
  background: var(--card); border: 1px solid var(--edge); border-radius: 999px;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.mode-switch button {
  flex: 1; border: none; background: transparent; color: var(--ink-soft); font-size: 0.88rem; font-weight: 500;
  padding: 9px 6px; border-radius: 999px; cursor: pointer; transition: color 0.2s, background 0.25s;
}
.mode-switch button.is-active { color: #fff; background: linear-gradient(180deg, var(--green-soft), var(--green)); box-shadow: 0 3px 10px rgba(140, 90, 52, 0.20); }
html.night .mode-switch button.is-active { color: #2a0d05; }
.mode-hint { text-align: center; font-size: 0.82rem; color: var(--ink-faint); margin: 0 0 18px; min-height: 1.2em; }

.well-stage { text-align: center; }
.collide { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; margin: 6px 0 22px; }
.idea-card {
  background: var(--card); border: 1px solid var(--edge); border-radius: var(--radius); padding: 18px; text-align: left;
  font-size: 1.02rem; line-height: 1.42; display: flex; flex-direction: column; gap: 11px; min-height: 146px;
  min-width: 0; overflow-wrap: anywhere; backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow); position: relative; z-index: 1;
}
.idea-card.left  { transform-origin: right center; animation: strike-left 0.5s cubic-bezier(0.34, 1.45, 0.5, 1) both; }
.idea-card.right { transform-origin: left center;  animation: strike-right 0.5s cubic-bezier(0.34, 1.45, 0.5, 1) both; }
@keyframes strike-left  { 0% { transform: translateX(-46px) rotate(-8deg); opacity: 0; } 70% { transform: translateX(8px) rotate(.6deg); } 100% { transform: translateX(0) rotate(-1.8deg); opacity: 1; } }
@keyframes strike-right { 0% { transform: translateX(46px) rotate(8deg);   opacity: 0; } 70% { transform: translateX(-8px) rotate(-.6deg); } 100% { transform: translateX(0) rotate(1.8deg);  opacity: 1; } }
.idea-card .meta { margin-top: auto; display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

.collide-core { position: relative; z-index: 3; width: 56px; height: 56px; display: grid; place-items: center; }
.collide-core .burst {
  position: absolute; width: 130px; height: 130px; border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, var(--spark-glow) 0%, transparent 62%); animation: burst 0.8s var(--ease) 0.26s both;
}
.collide-core .mark { width: 100%; height: 100%; color: var(--spark); filter: drop-shadow(0 0 8px var(--spark-glow)); animation: flash 0.55s cubic-bezier(0.34, 1.5, 0.5, 1) 0.28s both; }
.collide-core .mark svg { width: 100%; height: 100%; display: block; }
@keyframes burst { 0% { transform: scale(0.2); opacity: 0; } 28% { opacity: 1; } 100% { transform: scale(1.75); opacity: 0; } }
@keyframes flash { 0% { transform: scale(0.3) rotate(-35deg); opacity: 0; } 52% { transform: scale(1.4) rotate(0); opacity: 1; } 100% { transform: scale(1) rotate(0); opacity: 1; } }
.well-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.empty { text-align: center; color: var(--ink-faint); padding: 48px 20px; font-family: var(--serif); font-style: italic; font-size: 1.05rem; line-height: 1.6; }
.empty .ico { width: 2em; height: 2em; display: block; margin: 0 auto 12px; color: var(--green-soft); opacity: 0.7; }

.ghost {
  display: inline-flex; align-items: center; gap: 7px; font-size: 0.84rem; text-decoration: none; color: var(--ink-soft);
  background: var(--card); border: 1px solid var(--edge); border-radius: 999px; padding: 9px 16px; min-height: 42px; cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.1s var(--ease);
}
.ghost:hover { color: var(--ink); border-color: var(--edge-strong); background: var(--mist); }
.ghost:active { transform: scale(0.97); }
.ghost .ico { opacity: 0.85; }
.ghost.is-on { color: var(--green-deep); border-color: var(--edge-strong); background: var(--mist); }

/* ==========================================================================
   Лава: усі іскри
   ========================================================================== */
.search-bar { display: flex; align-items: center; gap: 9px; background: var(--card); border: 1px solid var(--edge); border-radius: 999px; padding: 4px 16px; margin-bottom: 16px; backdrop-filter: blur(10px); }
.search-bar .ico { color: var(--ink-faint); }
.search { flex: 1; border: none; outline: none; background: transparent; color: var(--ink); font-size: 1rem; padding: 9px 0; }
.search::placeholder { color: var(--ink-faint); }
.list-item {
  background: var(--card); border: 1px solid var(--edge); border-left: 3px solid var(--green-soft); border-radius: var(--radius-sm);
  padding: 13px 15px; margin-bottom: 10px; box-shadow: var(--shadow-soft); display: flex; gap: 12px; align-items: flex-start;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); animation: rise 0.4s var(--ease);
  transition: border-color 0.2s, background 0.2s;
}
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.list-item:hover { border-color: var(--edge-strong); }
.list-item .body { flex: 1; min-width: 0; }
.list-item .meta { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; align-items: center; }
.icon-btn { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border: none; background: transparent; color: var(--ink-faint); border-radius: 10px; cursor: pointer; flex: none; transition: color 0.2s, background 0.2s; }
.icon-btn:hover { color: #c0664f; background: rgba(192, 102, 79, 0.12); }
.icon-btn .ico { width: 1.15em; height: 1.15em; }

/* ==========================================================================
   Нотатки
   ========================================================================== */
.docs-head { display: flex; justify-content: flex-end; margin-bottom: 14px; }
.doc-list .list-item { cursor: pointer; border-left-color: var(--green); }
.born { font-size: 0.72rem; color: var(--green-soft); background: var(--mist); border-radius: 6px; padding: 2px 8px; }

.doc-head { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; }
.doc-title {
  flex: 1; min-width: 0; border: none; border-bottom: 2px solid var(--edge); background: transparent;
  font-family: var(--serif); font-size: 1.5rem; font-weight: 400; color: var(--green-deep); outline: none; padding: 6px 2px;
}
.doc-title:focus { border-color: var(--edge-strong); }
.editor-modes { display: flex; gap: 5px; padding: 4px; margin-bottom: 12px; background: var(--card); border: 1px solid var(--edge); border-radius: 999px; }
.editor-modes button { flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 7px; border: none; background: transparent; color: var(--ink-soft); font-size: 0.86rem; padding: 9px; border-radius: 999px; cursor: pointer; transition: color 0.2s, background 0.25s; }
.editor-modes button.is-active { color: #fff; background: linear-gradient(180deg, var(--green-soft), var(--green)); }
html.night .editor-modes button.is-active { color: #2a0d05; }

.doc-pane { background: var(--card); border: 1px solid var(--edge); border-radius: var(--radius-sm); backdrop-filter: blur(10px); box-shadow: var(--shadow-soft); }
.doc-edit {
  width: 100%; min-height: 56vh; border: none; background: transparent; color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.95rem; line-height: 1.7;
  padding: 18px; resize: vertical; outline: none;
}
.doc-read { padding: 18px 22px; min-height: 56vh; overflow-wrap: anywhere; }
.doc-read h1, .doc-read h2, .doc-read h3 { color: var(--green-deep); }
.doc-read blockquote { border-left: 3px solid var(--green-soft); margin: 10px 0; padding: 4px 14px; color: var(--ink-soft); background: var(--mist); border-radius: 0 8px 8px 0; }
.doc-read code { background: var(--mist); padding: 2px 6px; border-radius: 5px; font-family: ui-monospace, monospace; font-size: 0.9em; }
.doc-read pre { background: #1a0c06; color: #ffd9b8; padding: 14px; border-radius: 10px; overflow-x: auto; }
.doc-read pre code { background: none; color: inherit; padding: 0; }
.doc-read a { color: var(--green); }
.doc-read hr { border: none; border-top: 1px solid var(--edge); margin: 18px 0; }
.doc-read .wikilink { color: var(--green-deep); background: var(--mist); padding: 1px 7px; border-radius: 6px; text-decoration: none; border-bottom: 1px solid var(--green-soft); cursor: pointer; white-space: nowrap; }
.doc-read .wikilink:hover { background: var(--green-soft); color: #fff; }
.doc-read .wikilink.missing { background: transparent; color: var(--ink-faint); border-bottom: 1px dashed var(--ink-faint); }
.backlinks { margin-top: 18px; border-top: 1px dashed var(--edge); padding-top: 14px; }
.backlinks h4 { margin: 0 0 10px; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--green); }
.backlink { display: block; background: var(--card); border: 1px solid var(--edge); border-radius: 10px; padding: 9px 13px; margin-bottom: 8px; cursor: pointer; color: var(--ink); text-decoration: none; }
.backlink:hover { background: var(--mist); }
.backlink b { color: var(--green-deep); font-weight: 600; }

/* ==========================================================================
   Підвал
   ========================================================================== */
.footer { margin-top: 34px; padding-top: 20px; border-top: 1px solid var(--edge); }
.footer-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; }
.footer-actions .ghost { flex: 0 1 calc(50% - 5px); justify-content: center; }
.footer-actions .ghost span { white-space: nowrap; }
.ghost-link { color: var(--green); border-color: var(--edge-strong); }
.ghost-link:hover { background: var(--mist); }
.footer-note { text-align: center; font-size: 0.74rem; color: var(--ink-faint); margin: 16px 0 0; }

/* ==========================================================================
   Навігація
   ========================================================================== */
.tabs {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40; display: flex; gap: 2px;
  padding: 8px 10px calc(env(safe-area-inset-bottom, 0px) + 8px);
  background: var(--card-solid); border-top: 1px solid var(--edge);
  backdrop-filter: blur(18px) saturate(1.2); -webkit-backdrop-filter: blur(18px) saturate(1.2);
}
.tab { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; font-size: 0.7rem; color: var(--ink-faint); background: transparent; border: none; border-radius: 14px; padding: 6px 4px; min-height: 48px; cursor: pointer; transition: color 0.2s, background 0.25s; }
.tab .ico { width: 1.4em; height: 1.4em; transition: transform 0.2s var(--ease); }
.tab.is-active { color: var(--green-deep); background: var(--mist); }
.tab.is-active .ico { transform: translateY(-1px) scale(1.06); }

/* ==========================================================================
   Тост
   ========================================================================== */
.toast {
  position: fixed; left: 50%; bottom: calc(env(safe-area-inset-bottom, 0px) + var(--nav-h) + 18px);
  transform: translateX(-50%) translateY(16px); background: var(--card-solid); border: 1px solid var(--edge-strong);
  color: var(--ink); font-size: 0.88rem; padding: 11px 20px; border-radius: 999px;
  backdrop-filter: blur(14px); box-shadow: var(--shadow); opacity: 0; pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease); z-index: 110; max-width: 88vw; text-align: center;
}
.toast.is-visible { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .firefly, .seed-float, .glow, .magma-seam, .boat-wrap svg .water { animation: none !important; }
  * { scroll-behavior: auto !important; }
}

/* ==========================================================================
   Панель «Сховище й захист»
   ========================================================================== */
.sheet { position: fixed; inset: 0; z-index: 120; display: flex; align-items: flex-end; justify-content: center; }
.sheet-backdrop { position: absolute; inset: 0; background: rgba(16, 6, 3, 0.64); backdrop-filter: blur(3px); animation: fade 0.25s ease; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.sheet-card {
  position: relative; width: 100%; max-width: 460px; margin: 0 12px calc(env(safe-area-inset-bottom, 0px) + 14px);
  max-height: 86vh; overflow-y: auto; background: var(--card-solid); border: 1px solid var(--edge-strong);
  border-radius: 22px; padding: 22px 20px 18px; box-shadow: 0 -10px 50px rgba(0,0,0,0.4);
  backdrop-filter: blur(20px); animation: sheet-up 0.3s var(--ease);
}
@keyframes sheet-up { from { transform: translateY(22px); opacity: 0; } to { transform: none; opacity: 1; } }
.sheet-x { position: absolute; top: 14px; right: 14px; width: 34px; height: 34px; display: inline-flex; align-items: center; justify-content: center; color: var(--ink-faint); background: var(--mist); border: none; border-radius: 50%; cursor: pointer; }
.sheet-x:hover { color: var(--ink); }
.sheet-title { font-family: var(--serif); font-weight: 400; font-size: 1.5rem; color: var(--green-deep); margin: 0 0 4px; }
.sheet-sub { font-size: 0.84rem; color: var(--ink-faint); margin: 0 0 6px; }
.set-block { margin-top: 20px; }
.set-h { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--green); margin: 0 0 10px; }
.set-row { display: flex; align-items: center; gap: 12px; }
.set-row .grow { flex: 1; }
.set-line { font-size: 0.92rem; color: var(--ink); margin: 0; }
.set-line.ok { color: var(--green-deep); }
.set-line.warn { color: #c98a3a; }
html.night .set-line.warn { color: #e6b85f; }
.set-note { font-size: 0.8rem; color: var(--ink-faint); margin: 4px 0 0; line-height: 1.45; }
.seg { display: flex; gap: 5px; padding: 4px; background: var(--card); border: 1px solid var(--edge); border-radius: 999px; }
.seg button { flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 7px; border: none; background: transparent; color: var(--ink-soft); font-size: 0.86rem; padding: 9px; border-radius: 999px; cursor: pointer; transition: color 0.2s, background 0.25s; }
.seg button.is-active { color: #fff; background: linear-gradient(180deg, var(--green-soft), var(--green)); }
html.night .seg button.is-active { color: #2a0d05; }
.switch { display: inline-flex; align-items: center; cursor: pointer; }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch .track { width: 44px; height: 25px; border-radius: 999px; background: var(--edge-strong); position: relative; transition: background 0.2s; }
.switch .thumb { position: absolute; top: 3px; left: 3px; width: 19px; height: 19px; border-radius: 50%; background: #fff; transition: transform 0.2s; box-shadow: 0 1px 3px rgba(0,0,0,0.2); }
.switch input:checked + .track { background: var(--green); }
.switch input:checked + .track .thumb { transform: translateX(19px); }
.set-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; width: 100%; margin-top: 10px; padding: 12px; font-size: 0.9rem; color: var(--ink); background: var(--card); border: 1px solid var(--edge); border-radius: 13px; cursor: pointer; transition: border-color 0.2s, background 0.2s; }
.set-btn:hover { border-color: var(--edge-strong); background: var(--mist); }
.set-btn.solid { color: #fff; background: linear-gradient(180deg, var(--green-soft), var(--green)); border: none; }
html.night .set-btn.solid { color: #2a0d05; }
.set-btn.danger { color: #c0664f; border-color: rgba(192,102,79,0.4); }
.set-btn.danger:hover { background: rgba(192,102,79,0.12); }
.set-input { width: 100%; margin-top: 10px; padding: 12px 14px; font-size: 1rem; color: var(--ink); background: var(--card); border: 1px solid var(--edge); border-radius: 13px; outline: none; }
.set-input:focus { border-color: var(--edge-strong); }
.set-pair { display: flex; gap: 9px; }
.set-pair .set-btn { margin-top: 10px; }

/* ==========================================================================
   Екран замка
   ========================================================================== */
.lockscreen { position: fixed; inset: 0; z-index: 300; display: flex; align-items: center; justify-content: center; padding: 24px; background: linear-gradient(180deg, var(--bg-top), var(--bg-low)); }
.lock-card { width: 100%; max-width: 360px; text-align: center; animation: sheet-up 0.4s var(--ease); }
.lock-ico { width: 44px; height: 44px; fill: none; stroke: var(--green); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; filter: drop-shadow(0 0 12px var(--spark-glow)); margin-bottom: 14px; }
.lock-title { font-family: var(--serif); font-weight: 400; font-size: 1.6rem; color: var(--green-deep); margin: 0 0 6px; }
.lock-sub { font-size: 0.9rem; color: var(--ink-faint); margin: 0 0 20px; }
.lock-input { width: 100%; padding: 13px 15px; font-size: 1.05rem; color: var(--ink); background: var(--card); border: 1px solid var(--edge-strong); border-radius: 14px; outline: none; text-align: center; }
.lock-input:focus { border-color: var(--green); }
.lock-ok { width: 100%; margin-top: 12px; padding: 13px; font-size: 0.95rem; font-weight: 600; color: #fff; background: linear-gradient(180deg, var(--green-soft), var(--green)); border: none; border-radius: 14px; cursor: pointer; }
html.night .lock-ok { color: #2a0d05; }
.lock-error { color: #c0664f; font-size: 0.85rem; margin: 12px 0 0; }

/* ==========================================================================
   Планшет / десктоп
   ========================================================================== */
@media (min-width: 700px) {
  :root { --nav-h: 0px; }
  .app { max-width: 680px; padding-bottom: 48px; }
  .tabs {
    position: static; margin: 6px 0 22px; gap: 5px; padding: 5px;
    border: 1px solid var(--edge); border-radius: 999px; background: var(--card);
    backdrop-filter: blur(10px);
  }
  .tab { flex-direction: row; gap: 8px; min-height: 0; padding: 10px 8px; font-size: 0.85rem; border-radius: 999px; }
  .tab .ico { width: 1.05em; height: 1.05em; }
  .tab.is-active { color: #fff; background: linear-gradient(180deg, var(--green-soft), var(--green)); box-shadow: 0 3px 12px rgba(140, 90, 52, 0.22); font-weight: 600; }
  html.night .tab.is-active { color: #2a0d05; }
  .tab.is-active .ico { transform: none; }
  .brand { font-size: 2.6rem; }
  .prompt { font-size: 1.3rem; max-width: none; min-height: 1.5em; white-space: nowrap; }
  .toast { bottom: 28px; }
  .footer-actions .ghost { flex: 0 0 auto; }
  /* На десктопі аркуш центрується, а не тулиться донизу */
  .sheet { align-items: center; }
  .sheet-card { margin: 0 16px; }
}
/* Мобільний: зіткнення ЛИШАЄТЬСЯ горизонтальним — двоє б'ються боками */
@media (max-width: 620px) {
  .collide { gap: 0; }
  .idea-card { padding: 13px 12px; font-size: 0.9rem; min-height: 124px; gap: 8px; }
  .idea-card .meta { gap: 4px; }
  .idea-card .meta .hint { display: none; }
  .chip { padding: 3px 8px; font-size: 0.72rem; }
  .collide-core { width: 40px; height: 40px; }
  .collide-core .burst { width: 92px; height: 92px; }
}
@media (max-width: 360px) {
  .tab span { font-size: 0.64rem; }
  .idea-card { padding: 11px 9px; font-size: 0.84rem; }
  .collide-core { width: 32px; height: 32px; }
}
:focus-visible { outline: 2px solid var(--green-soft); outline-offset: 2px; border-radius: 6px; }
.capture-input:focus, .tag-input:focus, .doc-edit:focus, .search:focus { outline: none; }