/* ══════════════════════════════════════════════════════
   SecNote — Wireframe-faithful implementation
   No 3rd-party fonts or libs. Auto day/night theme.
   ══════════════════════════════════════════════════════ */

/* ── Design tokens (dark-first: matches wireframe paper-dark) ── */
:root {
  --bg:        #181714;
  --surface:   #201e1b;
  --surface-2: #272420;
  --ink:       #e8e6e0;
  --ink-soft:  #aaa8a0;
  --ink-light: #807d76;
  --accent:    #3b5b8a;
  --violet:    #7557d8;
  --accent-d:  rgba(59,91,138,.14);
  --danger:    #c43838;
  --danger-d:  rgba(196,56,56,.12);
  --warn:      #e07b20;
  --warn-d:    rgba(224,123,32,.13);
  --green:     #3aa84a;
  --border:    rgba(232,230,224,.16);
  --border-h:  rgba(232,230,224,.34);
  --shadow:    3px 4px 0 rgba(0,0,0,.32);
  --shadow-sm: 2px 2px 0 rgba(0,0,0,.24);
  --glass:     rgba(24,23,20,.72);
  --glass-b:   rgba(232,230,224,.12);
  --glass-sh:  0 8px 24px rgba(0,0,0,.22);

  --hand: system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono: ui-monospace,"SF Mono","Fira Code",Menlo,Consolas,monospace;
  --body: system-ui,-apple-system,"Segoe UI",sans-serif;

  --nav-h: 54px;
  --w:     560px;
  --r:     3px;
}

/* Light mode overrides */
@media (prefers-color-scheme: light) {
  :root {
    --bg:        #f0eee9;
    --surface:   #fafaf6;
    --surface-2: #f0ede7;
    --ink:       #1a1a1a;
    --ink-soft:  #4a4644;
    --ink-light: #8a8580;
    --accent:    #3b5b8a;
    --violet:    #6647d1;
    --accent-d:  rgba(59,91,138,.10);
    --danger:    #c43838;
    --danger-d:  rgba(196,56,56,.10);
    --warn:      #c96a10;
    --warn-d:    rgba(201,106,16,.11);
    --green:     #2d8a3a;
    --border:    rgba(26,24,20,.20);
    --border-h:  rgba(26,24,20,.42);
    --shadow:    3px 4px 0 rgba(26,24,20,.09);
    --shadow-sm: 2px 2px 0 rgba(26,24,20,.07);
    --glass:     rgba(250,250,246,.78);
    --glass-b:   rgba(26,24,20,.10);
    --glass-sh:  0 8px 20px rgba(26,24,20,.10);
  }
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
::selection { background: var(--accent); color: #fff; }
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-thumb { background: var(--border-h); border-radius: 2px; }

/* ── Base ── */
body {
  font-family: var(--body);
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

.svg-defs {
  display: none;
  position: absolute;
}

/* ── Nav ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--bg);
  border-bottom: 1.5px solid var(--border);
  display: flex;
  align-items: center;
}

.nav-inner {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  text-decoration: none;
  user-select: none;
}
.lock-icon { color: var(--accent); flex-shrink: 0; }
.brand-name {
  font-family: var(--hand);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
}

/* Nav right cluster */
.nav-right {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 5px 7px;
}
.nav-right::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  box-shadow: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms ease, background 120ms ease, box-shadow 120ms ease;
}
.nav-right > * {
  position: relative;
  z-index: 1;
}
.nav-right:focus-within::before,
.nav-right:has(button:active)::before {
  opacity: 1;
  border-color: var(--glass-b);
  background: var(--glass);
  box-shadow: var(--glass-sh);
  backdrop-filter: blur(34px);
  -webkit-backdrop-filter: blur(34px);
}

/* API badge */
.api-badge {
  display: flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-light);
  padding: 0;
  line-height: 1;
}
.api-badge:hover { color: var(--ink); }

.dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--border-h);
  flex-shrink: 0;
  display: inline-block;
}
.dot.ok  { background: var(--green);  }
.dot.err { background: var(--danger); }

.api-host {
  color: var(--ink);
  border-bottom: 1px dashed var(--border-h);
  padding-bottom: 1px;
}

/* Settings cog */
.cog-btn {
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  background: none;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  color: var(--ink-light);
  cursor: pointer;
  transition: border-color 100ms, color 100ms;
}
.cog-btn:hover { border-color: var(--border-h); color: var(--ink); }

/* Theme toggle icons */
.theme-tog {
  display: flex; align-items: center; gap: 4px;
  color: var(--ink-light);
  pointer-events: none;
}
.theme-sep { font-size: 0.7rem; opacity: 0.4; }

/* ── Screens ── */
.screen {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 44px 20px 64px;
}
.screen.hidden { display: none !important; }

/* Center column */
.col {
  width: 100%;
  max-width: var(--w);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ── Typography ── */
.h1 {
  font-family: var(--hand);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
}
.h2 {
  font-family: var(--hand);
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--ink);
}
.compose-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}
.compose-title,
.title-stack {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  width: max-content;
  max-width: 100%;
  min-width: 0;
}
.sub {
  font-size: 0.88rem;
  color: var(--ink-soft);
  line-height: 1.6;
}
.mono { font-family: var(--mono); }
.muted { color: var(--ink-light); }
.small { font-size: 0.74rem; }
.danger-txt { color: var(--danger); }
.green-txt  { color: var(--green);  }

/* Squiggly underline */
.squig {
  display: block;
  color: var(--ink-soft);
  opacity: 0.5;
  margin-top: 2px;
}
.compose-title .squig,
.title-stack .squig {
  width: 100%;
  height: auto;
}


/* ── Textarea card ── */
.note-card {
  position: relative;
  background: var(--surface);
  border: 1.5px solid var(--ink);
  border-radius: var(--r);
  box-shadow: var(--shadow);
}
.note-card textarea {
  width: 100%;
  min-height: 220px;
  background: transparent;
  border: none;
  outline: none;
  resize: vertical;
  font-family: var(--body);
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.65;
  padding: 18px 108px 58px 20px;
}
.note-card textarea::placeholder { color: var(--ink-light); }

/* Char counter + ring */
.char-wrap {
  position: absolute;
  bottom: 10px; right: 12px;
  display: flex; align-items: center; gap: 8px;
  padding: 7px 10px 7px 8px;
  border: 1px solid var(--glass-b);
  border-radius: 999px;
  background: var(--glass);
  box-shadow: var(--glass-sh);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  pointer-events: none;
}
.ring-svg {
  display: block;
  flex: none;
  filter: drop-shadow(0 1px 0 rgba(0,0,0,.12));
}
.ring-track {
  stroke: var(--border-h);
  opacity: 0.65;
}
.ring-fill  {
  stroke: var(--accent);
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  transition: stroke-dashoffset 200ms ease, stroke 120ms ease;
}
.ring-fill.warn { stroke: var(--danger); }
.char-txt {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-light);
  text-shadow: 0 1px 0 rgba(0,0,0,.08);
}

/* TTL chips */
.ttl-row {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}
.ttl-chip {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 4px 13px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.82rem;
  user-select: none;
  color: var(--ink-soft);
  transition: background 140ms, color 140ms;
}
.ttl-chip input {
  appearance: none;
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  margin: 0;
}
.ttl-chip:has(input:checked) {
  background: var(--accent);
  color: #fff;
}
.ttl-chip:has(input:checked) span {
  font-weight: 700;
  font-family: var(--mono);
}
.ttl-chip:not(:has(input:checked)):hover {
  color: var(--ink);
}

/* ── Compose footer row ── */
.compose-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: nowrap;
}

/* Tagline + privacy link row below compose-row */
.compose-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
}

/* Status bar (left side) */
.status-side {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
  width: min(100%, 240px);
  flex: 0 1 240px;
}
.status-lbl {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-light);
}
.status-lbl.app-get-antibot,
.status-msg.app-get-antibot { color: var(--violet); }
.status-lbl.app-solving,
.status-msg.app-solving,
.status-lbl.app-sending { color: var(--accent); }
.status-lbl.app-ready,
.status-msg.app-ready { color: var(--green); }
.status-lbl.err { color: var(--danger); }
.segs {
  display: flex; gap: 4px;
  width: 100%;
}
.seg {
  flex: 1; height: 6px;
  background: transparent;
  border: 1.5px solid var(--ink);
  border-radius: 1px;
  transition: background 180ms, border-color 180ms;
}
.seg.done   { background: var(--accent); border-color: var(--accent); opacity: 0.55; }
.seg.active { background: var(--accent); border-color: var(--accent); }
.seg.seg-violet { background: var(--violet); border-color: var(--violet); }
.seg.seg-blue { background: var(--accent); border-color: var(--accent); }
.seg.seg-green {
  background: var(--green) !important;
  border-color: var(--green) !important;
  opacity: 1 !important;
}

/* Send side (right) */
.send-side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  margin-left: auto;
  flex: 0 0 auto;
}
.send-side .btn {
  white-space: nowrap;
}
.open-link-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1.5px dashed var(--border-h);
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
}
.open-link-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.open-link-kicker {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.open-link-hint {
  font-size: 0.8rem;
  color: var(--ink-soft);
  line-height: 1.55;
}
.open-link-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.open-link-inp {
  flex: 1 1 auto;
  width: 100%;
  min-width: 0;
  background: var(--surface-2);
  border: 1.5px solid var(--ink);
  border-radius: var(--r);
  box-shadow: inset 1px 2px 0 rgba(0,0,0,.06);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 10px 14px;
  outline: none;
  transition: border-color 100ms, box-shadow 100ms;
}
.open-link-inp:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-d);
}
.open-link-msg {
  min-height: 1.2em;
}

/* ── Buttons ── */
button { cursor: pointer; font: inherit; border: none; outline: none; }

.btn {
  font-family: var(--hand);
  font-size: 1.05rem;
  font-weight: 700;
  padding: 9px 20px;
  border-radius: var(--r);
  border: 1.5px solid transparent;
  box-shadow: var(--shadow);
  transition: filter 90ms, transform 80ms, background 90ms;
}
.btn:hover:not(:disabled) { transform: translateY(-1px); }
.btn:disabled { opacity: 0.38; cursor: not-allowed; transform: none; }

.btn-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-accent:hover:not(:disabled) { filter: brightness(1.1); }

.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border-color: var(--ink);
}
.btn-ghost:hover:not(:disabled) { background: var(--surface-2); }

.btn-danger {
  background: var(--danger-d);
  color: var(--danger);
  border-color: rgba(196,56,56,.38);
}
.btn-danger:hover:not(:disabled) { background: var(--danger); color: #fff; }

.btn-danger-ol {
  background: transparent;
  color: var(--danger);
  border-color: var(--danger);
  font-family: var(--hand);
  font-size: 1.05rem;
  font-weight: 700;
  padding: 9px 20px;
  border-radius: var(--r);
  box-shadow: var(--shadow);
  transition: background 90ms, transform 80ms;
}
.btn-danger-ol:hover { background: var(--danger-d); transform: translateY(-1px); }

/* small variant */
.btn-sm {
  font-family: var(--hand);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 5px 13px;
  border-radius: var(--r);
  border: 1.5px solid var(--ink);
  background: transparent;
  color: var(--ink-soft);
  box-shadow: var(--shadow-sm);
  transition: background 90ms;
}
.btn-sm:hover { background: var(--surface-2); }

/* Privacy link */
.pp-line {
  font-family: var(--mono);
  font-size: 0.69rem;
  color: var(--ink-light);
  text-align: right;
  line-height: 1.5;
}
.pp-link {
  background: none; border: none; padding: 0;
  font: inherit;
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: transparent;
  transition: text-decoration-color 100ms;
}
.pp-link:hover { text-decoration-color: var(--accent); }

/* ── Lang picker ── */
.lang-wrap { position: relative; }
.lang-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 9px;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  background: transparent;
  cursor: pointer;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.74rem;
  line-height: 1;
  transition: border-color 120ms, color 120ms;
}
.lang-btn:hover { border-color: var(--border-h); color: var(--ink); }
.lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--surface);
  border: 1.5px solid var(--border-h);
  border-radius: 8px;
  box-shadow: 0 8px 28px rgba(0,0,0,.32);
  list-style: none;
  padding: 4px;
  margin: 0;
  min-width: 148px;
  z-index: 300;
  display: flex;
  flex-direction: column;
}
.lang-menu.hidden { display: none; }
.lang-menu li {
  padding: 7px 12px;
  cursor: pointer;
  border-radius: 5px;
  font-size: 0.84rem;
  color: var(--ink-soft);
  transition: background 80ms;
}
.lang-menu li:hover { background: var(--surface-2); color: var(--ink); }
.lang-menu li[aria-selected="true"] { color: var(--accent); font-weight: 600; }

/* Tagline */
.tagline {
  display: flex; gap: 8px; flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-light);
}

/* ── Link generated screen ── */
.link-box {
  display: flex; align-items: center; gap: 10px;
  background: var(--surface);
  border: 1.5px solid var(--ink);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  padding: 0 14px;
  min-height: 50px;
}
.link-url {
  flex: 1; min-width: 0;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.link-alt {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 14px;
  background: var(--surface-2);
  border: 1px dashed var(--border-h);
  border-radius: var(--r);
}
.link-alt[hidden] { display: none !important; }
.link-alt-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.link-alt-title {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.link-alt-url {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-soft);
  text-decoration: none;
  line-height: 1.55;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.link-alt-url:hover {
  color: var(--accent);
}
.key-hint {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-light);
  margin-top: -6px;
}
.key-fragment {
  font-family: var(--mono);
  font-size: 0.78em;
}
.meta-row {
  display: flex; gap: 18px; flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--ink-soft);
}
.link-acts { display: flex; gap: 10px; flex-wrap: wrap; }
.qr-wrap { display: flex; justify-content: center; padding: 4px 0; }
.qr-wrap.hidden { display: none !important; }
.qr-wrap svg {
  display: block;
  width: 160px;
  height: 160px;
  background: #fff;
  border-radius: 4px;
  padding: 6px;
}

/* ── Locked / hatched box (gate + burned) ── */
.hatch-box {
  position: relative;
  background: var(--surface);
  border: 1.5px dashed var(--border-h);
  border-radius: var(--r);
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hatch-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    -45deg,
    transparent 0,
    transparent 7px,
    var(--border) 7px,
    var(--border) 8px
  );
  opacity: 0.5;
}
.hatch-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  padding: 16px;
}

/* ── Warning card (gate screen) ── */
.warn-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--warn-d);
  border: 1.5px solid rgba(224,123,32,.38);
  border-radius: var(--r);
  padding: 14px 16px;
}
.warn-card-icon {
  color: var(--warn);
  flex-shrink: 0;
  margin-top: 1px;
}
.warn-card-body {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.warn-card-body p {
  font-size: 0.88rem;
  color: var(--ink);
  line-height: 1.55;
}
.warn-card-body strong { color: var(--warn); }
.warn-card-body em     { font-style: normal; font-weight: 700; }
.warn-card-sub {
  font-size: 0.8rem !important;
  color: var(--ink-soft) !important;
}

/* Burned box variant — slightly red-tinted dashes */
.hatch-burned {
  border-color: rgba(196,56,56,.30);
}
.hatch-burned::before {
  background-image: repeating-linear-gradient(
    -45deg,
    transparent 0,
    transparent 7px,
    rgba(196,56,56,.12) 7px,
    rgba(196,56,56,.12) 8px
  );
  opacity: 1;
}

/* ── Gate actions row ── */
.gate-acts { display: flex; gap: 10px; flex-wrap: wrap; }
.status-msg {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-light);
  min-height: 1.2em;
}
.status-msg.err { color: var(--danger); }
.status-msg.ok  { color: var(--green);  }

/* ── Read screen ── */
.read-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 10px;
}
.burn-timer {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--danger);
  white-space: nowrap;
}
.read-card {
  background: var(--surface);
  border: 1.5px solid var(--ink);
  border-radius: var(--r);
  box-shadow: var(--shadow);
}
.read-card textarea {
  width: 100%;
  min-height: 200px;
  background: transparent;
  border: none;
  outline: none;
  resize: vertical;
  font-family: var(--body);
  font-size: 1.05rem;
  color: var(--ink);
  line-height: 1.65;
  padding: 20px 22px;
}
.read-acts {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.spacer { flex: 1; }

/* ── Settings overlay ── */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(0,0,0,.06);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
@media (prefers-color-scheme: dark) {
  .overlay { background: rgba(0,0,0,.54); }
}
.overlay.hidden { display: none !important; }

.settings-sheet {
  background: var(--glass);
  border: 1px solid var(--glass-b);
  border-radius: var(--r);
  box-shadow: 0 18px 44px rgba(0,0,0,.22);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 26px;
  width: 100%;
  max-width: 480px;
  max-height: 90dvh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.sheet-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 10px;
}
.esc-close {
  background: none; border: none; padding: 0;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-light);
  cursor: pointer;
}
.esc-close:hover { color: var(--ink); }

.field-block {
  display: flex; flex-direction: column; gap: 8px;
}
.field-lbl {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.field-hint {
  font-size: 0.8rem;
  color: var(--ink-soft);
  line-height: 1.55;
}
.url-inp {
  width: 100%;
  background: var(--surface-2);
  border: 1.5px solid var(--ink);
  border-radius: var(--r);
  box-shadow: inset 1px 2px 0 rgba(0,0,0,.06);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 10px 14px;
  outline: none;
  transition: border-color 100ms, box-shadow 100ms;
}
.url-inp:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-d); }

.api-status-row {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.api-reach {
  display: flex; align-items: center; gap: 5px;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--green);
}
.api-reach.err { color: var(--danger); }
.api-reach.hidden { display: none !important; }

.divider { border-top: 1px dashed var(--border-h); opacity: 0.65; }

.sheet-foot {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}

/* ── Privacy policy modal ── */
.modal-box {
  background: var(--surface);
  border: 1.5px solid var(--border-h);
  border-radius: 10px;
  box-shadow: 0 24px 64px rgba(0,0,0,.45);
  width: 100%;
  max-width: 600px;
  max-height: 88dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 0.86rem;
  color: var(--ink-soft);
  line-height: 1.65;
}
.modal-body h3 { font-size: 0.88rem; font-weight: 700; color: var(--ink); margin-top: 4px; }
.modal-body ul { padding-left: 18px; display: flex; flex-direction: column; gap: 4px; }
.modal-body code {
  font-family: var(--mono);
  font-size: 0.82em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 1px 4px;
}
.pp-date { font-family: var(--mono); font-size: 0.74rem; color: var(--ink-light); font-style: italic; }
.pp-section-head {
  font-size: 0.72rem !important;
  font-weight: 600 !important;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent) !important;
  margin-top: 16px !important;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}
.pp-contact { line-height: 1.8; }
.pp-email {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.pp-email:hover { opacity: 0.8; }
.modal-foot {
  padding: 14px 22px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  display: flex;
  justify-content: flex-end;
}

/* ── How it works section ── */
.how-section {
  border-top: 1.5px dashed var(--border-h);
  padding: 48px 20px 68px;
  background: var(--bg);
}
.how-section.hidden { display: none !important; }

.how-inner {
  width: 100%;
  max-width: var(--w);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.how-head { display: flex; flex-direction: column; gap: 2px; }

/* Tabs */
.how-tabs {
  display: flex;
  gap: 0;
  border: 1.5px solid var(--ink);
  border-radius: var(--r);
  overflow: hidden;
  align-self: flex-start;
  box-shadow: var(--shadow-sm);
}
.how-tab {
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--hand);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 7px 18px;
  border: none;
  border-radius: 0;
  cursor: pointer;
  transition: background 100ms, color 100ms;
  position: relative;
}
.how-tab + .how-tab { border-left: 1.5px solid var(--ink); }
.how-tab.active {
  background: var(--ink);
  color: var(--bg);
}
.how-tab:not(.active):hover { background: var(--surface-2); }

/* Panels */
.how-panel { display: flex; flex-direction: column; gap: 0; }
.how-panel.hidden { display: none !important; }

/* Plain steps */
.how-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.how-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--border);
}
.how-step:last-child { border-bottom: none; }

.step-num {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.06em;
  min-width: 24px;
  margin-top: 3px;
  flex-shrink: 0;
}
.step-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.step-body strong {
  font-family: var(--hand);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}
.step-body p {
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

/* Technical list */
.tech-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.tech-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--border);
}
.tech-item:last-child { border-bottom: none; }

.tech-badge {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-d);
  border: 1.5px solid var(--accent);
  border-radius: var(--r);
  padding: 3px 8px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 1px;
  letter-spacing: 0.03em;
}
.tech-item p {
  font-size: 0.83rem;
  color: var(--ink-soft);
  line-height: 1.6;
}
.tech-item code {
  font-family: var(--mono);
  font-size: 0.8em;
  background: var(--surface-2);
  border: 1px solid var(--border-h);
  border-radius: 2px;
  padding: 1px 4px;
}

/* Run locally */
.local-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 4px;
}
.btn-local {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--hand);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink-soft);
  background: transparent;
  border: 1.5px solid var(--ink);
  border-radius: var(--r);
  padding: 9px 18px;
  box-shadow: var(--shadow);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background 90ms, transform 80ms;
  flex-shrink: 0;
}
.btn-local:hover { background: var(--surface-2); transform: translateY(-1px); }
.local-hint {
  font-size: 0.74rem;
  color: var(--ink-light);
  line-height: 1.6;
  padding-top: 2px;
}
.local-hint code {
  font-family: var(--mono);
  font-size: 0.82em;
  background: var(--surface-2);
  border: 1px solid var(--border-h);
  border-radius: 2px;
  padding: 1px 4px;
}

/* ── PoW spinner ── */
@keyframes spin-anim {
  to { transform: rotate(360deg); }
}
.spin {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 1.5px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin-anim 0.65s linear infinite;
  vertical-align: middle;
  margin-left: 5px;
  flex-shrink: 0;
}

/* ── PoW pulse ── */
@keyframes pow-glow {
  0%   { box-shadow: 0 0 0 0   rgba(59,91,138,.45); }
  65%  { box-shadow: 0 0 0 9px rgba(59,91,138,.0);  }
  100% { box-shadow: 0 0 0 0   rgba(59,91,138,.0);  }
}
@keyframes pow-solving-pulse {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50%      { opacity: 0.58; transform: translateY(-0.5px); }
}
.pow-pulse {
  border-radius: 3px;
  animation: pow-glow 1s ease-out infinite;
}

.pow-solving {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.pow-solving-txt {
  animation: pow-solving-pulse 1.05s ease-in-out infinite;
}

/* ── PoW "ready to save" state ── */
.status-lbl.pow-ready  { color: var(--green); }
.seg.pow-ready {
  background:   var(--green) !important;
  border-color: var(--green) !important;
  opacity: 1 !important;
}

/* ── Resolving PoW in gateMsg ── */
.status-msg.pow-solving {
  padding: 4px 8px;
  border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .spin,
  .pow-pulse,
  .pow-solving-txt {
    animation: none !important;
  }
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .screen { padding: 28px 16px 50px; }
  .h1 { font-size: 1.65rem; }
  .note-card textarea { padding-right: 98px; }
  .compose-head,
  .compose-row { gap: 12px; }
  .open-link-row { flex-direction: column; align-items: stretch; }
  .open-link-row .btn-sm { width: 100%; }
  .compose-meta { flex-direction: column; align-items: flex-start; gap: 4px; }
  .pp-line { text-align: left; }
  .nav-right { gap: 8px; }
  .settings-sheet { padding: 20px 16px; }
  .how-section { padding: 36px 16px 52px; }
  .how-tabs { align-self: stretch; }
  .how-tab { flex: 1; }
  .tech-item { flex-direction: column; gap: 8px; }
  .local-row { flex-direction: column; gap: 10px; }
  .btn-local { align-self: flex-start; }
}
@media (max-width: 400px) {
  .api-badge span.api-label { display: none; }
  .link-acts { flex-direction: column; }
  .link-acts .btn { width: 100%; }
}
@media (max-height: 600px) {
  .screen { align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0ms !important;
    animation-duration: 0ms !important;
  }
}