:root {
  color-scheme: light;
  --ink: #142326;
  --ink-soft: #587074;
  --line: #d8e3e1;
  --surface: #ffffff;
  --surface-soft: #f4f7f6;
  --surface-tint: #eaf7f4;
  --brand: #087f73;
  --brand-dark: #05665d;
  --brand-pale: #d7f2ed;
  --danger: #b42318;
  --danger-pale: #fff0ee;
  --warning: #9a6700;
  --shadow: 0 14px 45px rgba(20, 51, 49, 0.14);
  --radius: 16px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

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

html, body { height: 100%; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface-soft);
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

button, input, textarea { font: inherit; }
button, label[for] { -webkit-touch-callout: none; }
button { color: inherit; }

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.app-header {
  min-height: calc(72px + env(safe-area-inset-top));
  padding: calc(10px + env(safe-area-inset-top)) 18px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 20;
  backdrop-filter: blur(18px);
}

.brand-block { display: flex; align-items: center; gap: 11px; min-width: 0; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 13px;
  display: grid; place-items: center;
  flex: 0 0 auto;
  color: white; background: var(--brand);
  font-size: 22px; font-weight: 800;
  box-shadow: 0 6px 18px rgba(8, 127, 115, 0.25);
}
.brand-block h1 { margin: 0; font-size: 17px; line-height: 1.2; letter-spacing: -0.01em; }
.brand-block p { margin: 3px 0 0; color: var(--ink-soft); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 42vw; }
.header-actions { display: flex; align-items: center; gap: 9px; }
.status-line { display: flex; gap: 7px; align-items: center; }
.status-pill { padding: 6px 9px; border-radius: 999px; background: var(--brand-pale); color: var(--brand-dark); font-size: 11px; font-weight: 700; white-space: nowrap; }
.status-pill--offline { background: #fff3d6; color: var(--warning); }
.status-pill--muted { background: #edf1f0; color: var(--ink-soft); }
.status-pill--saving { background: #e9f1ff; color: #245da5; }
.status-pill--pending { background: #fff3d6; color: #7a4a00; }
.status-pill--synced { background: #dff5ec; color: #087058; }
.status-pill--error { background: #fde8e5; color: #9b2b20; }

.app-shell { height: calc(100dvh - 72px - env(safe-area-inset-top)); min-height: 320px; }

.welcome-panel {
  height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 20% 15%, rgba(8, 127, 115, .14), transparent 34%),
    radial-gradient(circle at 90% 85%, rgba(103, 210, 187, .18), transparent 30%),
    var(--surface-soft);
}

.welcome-card {
  width: min(620px, 100%);
  padding: clamp(28px, 5vw, 52px);
  border: 1px solid rgba(216, 227, 225, .85);
  border-radius: 28px;
  background: rgba(255, 255, 255, .94);
  box-shadow: var(--shadow);
  text-align: center;
}
.eyebrow { color: var(--brand); font-size: 11px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.welcome-card h2 { margin: 11px 0 10px; font-size: clamp(27px, 5vw, 42px); line-height: 1.04; letter-spacing: -.035em; }
.welcome-card > p { color: var(--ink-soft); line-height: 1.55; margin: 0 auto 24px; max-width: 520px; }
.welcome-actions { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.welcome-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 28px; text-align: left; }
.welcome-steps div { padding: 13px; border-radius: 13px; background: var(--surface-soft); display: flex; gap: 9px; align-items: flex-start; }
.welcome-steps strong { width: 23px; height: 23px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; color: white; background: var(--brand); font-size: 12px; }
.welcome-steps span { font-size: 12px; line-height: 1.35; color: var(--ink-soft); }

.button {
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: 11px;
  padding: 9px 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  cursor: pointer;
  font-weight: 750;
  text-decoration: none;
  transition: transform .12s ease, background .12s ease, border-color .12s ease;
}
.button:active { transform: scale(.98); }
.button--primary { color: #fff; background: var(--brand); }
.button--primary:hover { background: var(--brand-dark); }
.button--secondary { color: var(--brand-dark); background: var(--surface); border-color: #b8d4cf; }
.button--danger { color: var(--danger); background: var(--danger-pale); border-color: #ffc9c2; }
.button--large { min-height: 50px; padding: 12px 20px; }
.button--full { width: 100%; }
.button:disabled { opacity: .5; cursor: not-allowed; }

.workspace { height: 100%; display: grid; grid-template-columns: minmax(290px, 34%) 1fr; overflow: hidden; }
.browser-pane { min-width: 0; background: var(--surface); border-right: 1px solid var(--line); display: flex; flex-direction: column; overflow: hidden; }
.browser-toolbar { padding: 12px; display: flex; gap: 9px; border-bottom: 1px solid var(--line); }
.icon-button { width: 42px; height: 42px; flex: 0 0 auto; border: 1px solid var(--line); border-radius: 11px; background: var(--surface); display: grid; place-items: center; cursor: pointer; font-size: 20px; }
.icon-button--header { box-shadow: 0 3px 12px rgba(20, 51, 49, .08); }
.search-box { flex: 1; min-width: 0; min-height: 42px; padding: 0 11px; display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface-soft); }
.search-box:focus-within { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(8, 127, 115, .12); }
.search-box span { color: var(--ink-soft); font-size: 20px; }
.search-box input { width: 100%; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--ink); }
.tree-meta { padding: 8px 13px; display: flex; justify-content: space-between; gap: 8px; color: var(--ink-soft); font-size: 11px; border-bottom: 1px solid var(--line); }
.node-list { flex: 1; overflow: auto; padding: 7px; overscroll-behavior: contain; }
.node-item { width: 100%; min-height: 51px; padding: 7px 9px; border: 0; border-radius: 10px; background: transparent; display: grid; grid-template-columns: 4px 1fr; gap: 9px; text-align: left; cursor: pointer; }
.node-item:hover { background: var(--surface-soft); }
.node-item.is-selected { background: var(--surface-tint); }
.node-stripe { border-radius: 99px; background: #8ba5a0; }
.node-item[data-level="function"] .node-stripe { background: #118a39; }
.node-item[data-level="subprocess"] .node-stripe { background: #345bea; }
.node-item[data-level="mode"] .node-stripe { background: #c57a00; }
.node-item[data-level="cause"] .node-stripe { background: #c5382d; }
.node-item[data-level="effect"] .node-stripe { background: #9b3ac2; }
.node-copy { min-width: 0; padding-left: var(--indent, 0px); }
.node-caption { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; line-height: 1.35; }
.node-category { display: block; margin-top: 3px; color: var(--ink-soft); font-size: 9px; font-weight: 800; letter-spacing: .045em; text-transform: uppercase; }
.no-results { padding: 35px 18px; text-align: center; color: var(--ink-soft); }

.editor-pane { min-width: 0; overflow: auto; background: var(--surface-soft); }
.empty-selection { min-height: 100%; padding: 30px; display: grid; place-content: center; text-align: center; color: var(--ink-soft); }
.empty-selection h2 { color: var(--ink); margin: 8px 0 4px; }
.empty-selection p { margin: 0; }
.empty-icon { width: 56px; height: 56px; margin: auto; display: grid; place-items: center; border-radius: 18px; background: var(--brand-pale); color: var(--brand); font-size: 28px; }
.record-editor { min-height: 100%; background: var(--surface); }
.record-heading { padding: 20px clamp(16px, 4vw, 38px) 16px; display: flex; gap: 12px; align-items: flex-start; border-bottom: 1px solid var(--line); }
.back-button { display: none; min-height: 36px; padding: 6px 9px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); color: var(--brand); font-weight: 750; cursor: pointer; }
.record-title-block { min-width: 0; }
.record-title-block h2 { margin: 6px 0; font-size: clamp(20px, 3vw, 29px); letter-spacing: -.025em; line-height: 1.15; }
.record-title-block p { margin: 0; color: var(--ink-soft); font-size: 11px; overflow-wrap: anywhere; }
.category-badge { display: inline-flex; min-height: 22px; align-items: center; padding: 3px 8px; border-radius: 999px; background: var(--brand-pale); color: var(--brand-dark); font-size: 9px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.tabs { position: sticky; top: 0; z-index: 5; display: flex; gap: 4px; padding: 9px clamp(12px, 4vw, 34px) 0; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); backdrop-filter: blur(15px); }
.tab { min-height: 43px; padding: 8px 12px 10px; border: 0; border-bottom: 3px solid transparent; background: transparent; color: var(--ink-soft); cursor: pointer; font-weight: 750; }
.tab.is-active { color: var(--brand); border-bottom-color: var(--brand); }
.tab-count { min-width: 20px; height: 20px; padding: 0 5px; display: inline-grid; place-items: center; border-radius: 999px; background: #edf1f0; font-size: 10px; }
.tab.is-active .tab-count { background: var(--brand-pale); }
.tab-panel { max-width: 920px; margin: 0 auto; padding: 20px clamp(14px, 4vw, 38px) calc(42px + env(safe-area-inset-bottom)); }

.details-form { display: grid; gap: 18px; }
.form-section { padding: 17px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.form-section h3 { margin: 0 0 13px; font-size: 14px; letter-spacing: .01em; }
.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }
.form-field { display: grid; gap: 6px; color: var(--ink-soft); font-size: 11px; font-weight: 700; }
.form-field--wide { grid-column: 1 / -1; }
input[type="text"], input[type="number"], textarea { width: 100%; border: 1px solid #cbd9d6; border-radius: 10px; background: #fff; color: var(--ink); outline: 0; padding: 10px 11px; font-size: 15px; font-weight: 400; line-height: 1.4; resize: vertical; }
input[type="text"]:focus, input[type="number"]:focus, textarea:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(8, 127, 115, .12); }
textarea { min-height: 82px; }

.section-intro { display: flex; align-items: flex-start; justify-content: space-between; gap: 15px; margin-bottom: 14px; }
.section-intro h3 { margin: 0; font-size: 20px; }
.section-intro p { margin: 4px 0 0; color: var(--ink-soft); font-size: 12px; line-height: 1.4; }
.section-intro--stack { flex-wrap: wrap; }
.picture-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.card-list { display: grid; gap: 11px; }
.card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: 0 4px 14px rgba(27, 61, 57, .05); }
.form-card { padding: 16px; margin-bottom: 14px; display: grid; gap: 12px; }
.form-card label { display: grid; gap: 5px; color: var(--ink-soft); font-size: 11px; font-weight: 700; }
.form-heading { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.form-heading h4 { margin: 0; font-size: 16px; }
.text-button { border: 0; background: none; color: var(--brand); padding: 5px; cursor: pointer; font-weight: 700; }
.check-row { display: flex !important; grid-auto-flow: column; justify-content: start; align-items: center; gap: 8px !important; color: var(--ink) !important; }
.check-row input { width: 20px; height: 20px; accent-color: var(--brand); }
.comment-card { padding: 15px; }
.comment-card__top { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
.comment-card__text { margin: 0; line-height: 1.45; white-space: pre-wrap; overflow-wrap: anywhere; }
.comment-card__answer { margin: 12px 0 0; padding: 10px; border-radius: 10px; background: var(--surface-soft); color: var(--ink-soft); white-space: pre-wrap; overflow-wrap: anywhere; }
.comment-meta { display: flex; align-items: center; gap: 7px; margin-top: 12px; color: var(--ink-soft); font-size: 10px; }
.resolved-badge { padding: 3px 7px; border-radius: 99px; background: var(--brand-pale); color: var(--brand-dark); font-weight: 800; }
.card-actions { display: flex; gap: 5px; }
.mini-button { min-width: 34px; min-height: 34px; padding: 5px 8px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); cursor: pointer; }
.mini-button--danger { color: var(--danger); }
.empty-card { padding: 28px; text-align: center; color: var(--ink-soft); border: 1px dashed #bfd0cd; border-radius: var(--radius); }

.inline-notice { margin-bottom: 13px; padding: 11px 13px; border-radius: 10px; background: #e9f1ff; color: #245da5; font-size: 12px; font-weight: 700; }
.pictures-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 13px; }
.picture-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.picture-card img { width: 100%; aspect-ratio: 4 / 3; display: block; object-fit: cover; background: #eef2f1; }
.picture-card__body { padding: 12px; display: grid; gap: 9px; }
.picture-card__name { min-width: 0; display: flex; align-items: center; justify-content: space-between; gap: 7px; }
.picture-card__name strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; }
.picture-card textarea { min-height: 68px; font-size: 13px; }
.picture-placeholder { aspect-ratio: 4 / 3; display: grid; place-items: center; background: var(--surface-soft); color: var(--ink-soft); }

.menu-backdrop { position: fixed; inset: 0; z-index: 50; background: rgba(8, 25, 27, .42); backdrop-filter: blur(2px); }
.transfer-menu { position: fixed; z-index: 51; top: 0; left: 0; width: min(390px, 92vw); height: 100dvh; padding: calc(18px + env(safe-area-inset-top)) 15px calc(15px + env(safe-area-inset-bottom)); display: flex; flex-direction: column; gap: 8px; overflow: auto; background: var(--surface); box-shadow: var(--shadow); animation: slide-in .18s ease-out; }
@keyframes slide-in { from { transform: translateX(-100%); } to { transform: translateX(0); } }
.menu-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; margin-bottom: 3px; }
.menu-heading h2 { margin: 5px 0 0; font-size: 25px; }
.menu-description { margin: 0 0 10px; color: var(--ink-soft); line-height: 1.45; font-size: 13px; }
.menu-action { width: 100%; padding: 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); display: flex; align-items: center; gap: 11px; text-align: left; cursor: pointer; }
.menu-action:active { background: var(--surface-soft); }
.menu-action__icon { width: 36px; height: 36px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 10px; background: var(--brand-pale); color: var(--brand-dark); font-size: 20px; font-weight: 800; }
.menu-action strong, .menu-action small { display: block; }
.menu-action strong { font-size: 13px; }
.menu-action small { margin-top: 3px; color: var(--ink-soft); font-size: 11px; line-height: 1.3; }
.menu-section-label { margin: 8px 4px 0; color: var(--ink-soft); font-size: 10px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.menu-spacer { flex: 1; min-height: 18px; }
.storage-info { padding: 10px; border-radius: 10px; background: var(--surface-soft); color: var(--ink-soft); font-size: 10px; text-align: center; }

.help-dialog { width: min(500px, calc(100% - 28px)); padding: 0; border: 0; border-radius: 22px; color: var(--ink); box-shadow: var(--shadow); }
.help-dialog::backdrop { background: rgba(8, 25, 27, .5); backdrop-filter: blur(3px); }
.help-dialog form { padding: 20px; }
.dialog-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.dialog-heading h2 { margin: 5px 0 0; }
.help-dialog ol { padding-left: 24px; line-height: 1.5; }
.help-dialog li { margin: 8px 0; }
.dialog-note { padding: 11px; border-radius: 10px; background: var(--surface-tint); color: var(--brand-dark); font-size: 12px; line-height: 1.4; }
.cloud-key-toggle { margin: 10px 0; display: flex; align-items: center; gap: 8px; color: var(--ink-soft); font-size: 12px; }
.cloud-settings-status { min-height: 18px; color: var(--ink-soft); font-size: 11px; line-height: 1.4; }
.dialog-actions { margin-top: 15px; display: flex; justify-content: flex-end; gap: 9px; flex-wrap: wrap; }

.toast-region { position: fixed; z-index: 100; right: 14px; bottom: calc(14px + env(safe-area-inset-bottom)); display: grid; gap: 8px; pointer-events: none; }
.toast { max-width: min(380px, calc(100vw - 28px)); padding: 11px 13px; border-radius: 11px; color: white; background: #173b3a; box-shadow: var(--shadow); font-size: 12px; line-height: 1.4; animation: toast-in .18s ease-out; }
.toast--error { background: #8f231b; }
@keyframes toast-in { from { transform: translateY(10px); opacity: 0; } }

@media (max-width: 760px) {
  .app-header { padding-left: 12px; padding-right: 12px; }
  .header-actions { gap: 6px; }
  .icon-button--header { width: 38px; height: 38px; }
  .brand-mark { width: 38px; height: 38px; border-radius: 11px; }
  .status-line { flex-direction: column; align-items: flex-end; gap: 3px; }
  .status-line .status-pill { padding: 4px 7px; font-size: 9px; }
  .status-line .status-pill:first-child { display: none; }
  .brand-block p { max-width: 50vw; }
  .app-shell { height: calc(100dvh - 68px - env(safe-area-inset-top)); }
  .workspace { display: block; position: relative; }
  .browser-pane, .editor-pane { width: 100%; height: 100%; border: 0; }
  .editor-pane { display: none; }
  body.show-editor .browser-pane { display: none; }
  body.show-editor .editor-pane { display: block; }
  .back-button { display: inline-flex; }
  .empty-selection { display: none; }
  .record-heading { padding: 14px 12px 12px; }
  .tabs { padding-left: 7px; padding-right: 7px; overflow-x: auto; }
  .tab { flex: 1; min-width: max-content; padding-left: 9px; padding-right: 9px; font-size: 12px; }
  .tab-panel { padding: 15px 11px calc(34px + env(safe-area-inset-bottom)); }
  .field-grid { grid-template-columns: 1fr; }
  .form-field--wide { grid-column: auto; }
  .form-section { padding: 14px; }
  .welcome-panel { padding: 14px; }
  .welcome-card { padding: 26px 18px; border-radius: 22px; }
  .welcome-actions { display: grid; grid-template-columns: 1fr; }
  .welcome-steps { grid-template-columns: 1fr; }
  .pictures-grid { grid-template-columns: 1fr; }
  .toast-region { right: 10px; left: 10px; }
  .toast { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}