:root {
  --font-mono: 'Courier New', Courier, monospace;
  --bg: #0e0e0e;
  --surface: #111111;
  --surface2: #131313;
  --border: #1e1e1e;
  --border-dim: #161616;
  --green: #39ff6a;
  --amber: #f0a020;
  --red: #e24b4a;
  --text: #b0b0b0;
  --text-dim: #666;
  --muted: #3a3a3a;
  --dim: #252525;
  --nav-h: 44px;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  font-family: var(--font-mono);
  color: var(--text);
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
}

button, input, textarea, select {
  font-family: var(--font-mono);
  background: none;
  border: none;
  outline: none;
  color: inherit;
}

button { touch-action: manipulation; }

/* ── shell: flex column fills viewport, nav stays put ── */
.layout {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 640px;
  margin: 0 auto;
}

.content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0 16px 24px;
  -webkit-overflow-scrolling: touch;
}

.content::-webkit-scrollbar { width: 2px; }
.content::-webkit-scrollbar-thumb { background: #1e1e1e; }

/* ── topbar / backbar ── */
.topbar, .backbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--border-dim);
  flex-shrink: 0;
}

.topbar-title { font-size: 12px; color: var(--green); letter-spacing: 0.1em; }
.topbar-exit {
  font-size: 10px; color: var(--muted);
  border: 1px solid #1e1e1e; padding: 4px 10px; border-radius: 2px;
  cursor: pointer; letter-spacing: 0.04em;
}
.topbar-exit:active { border-color: #333; color: var(--text-dim); }

.back-btn { font-size: 11px; color: var(--muted); cursor: pointer; letter-spacing: 0.03em; }
.back-btn:active { color: var(--text-dim); }
.view-title { font-size: 11px; color: var(--green); letter-spacing: 0.08em; }
.view-id { font-size: 10px; color: var(--dim); min-width: 48px; text-align: right; }

/* ── bottom nav ── */
.nav {
  flex-shrink: 0;
  height: var(--nav-h);
  background: #0a0a0a;
  border-top: 1px solid var(--border-dim);
  display: flex;
  align-items: stretch;
}

.fkey-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0 10px;
  cursor: pointer;
  border-right: 1px solid var(--border-dim);
  flex: 1;
  overflow: hidden;
}
.fkey-group:active { background: #111; }
.fkey {
  background: #111; border: 1px solid var(--border);
  border-radius: 2px; padding: 2px 5px;
  font-size: 9px; color: var(--muted); letter-spacing: 0.02em;
}
.fkey.active { border-color: #39ff6a44; color: var(--green); }
.fkey-label { font-size: 9px; color: #2a2a2a; letter-spacing: 0.04em; }
.fkey-label.active { color: var(--green); }
.nav .spacer { flex: 1; }
.nav .fab {
  width: var(--nav-h); height: var(--nav-h);
  background: var(--green);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: #000; cursor: pointer; border: none;
  flex-shrink: 0; border-left: 1px solid #2aee5a;
}
.nav .fab:active { background: #2aee5a; }

/* ── section headers ── */
.section-hdr {
  font-size: 9px; color: var(--green);
  letter-spacing: 0.1em; margin: 18px 0 10px;
  display: flex; align-items: center; gap: 8px;
}
.section-hdr::after {
  content: ''; flex: 1; height: 1px; background: var(--border-dim);
}

.comment { font-size: 9px; color: var(--dim); font-style: italic; margin-bottom: 10px; line-height: 1.6; }
.divider { height: 1px; background: var(--border-dim); margin: 16px 0; }

/* ── fields ── */
.field { margin-bottom: 14px; }
.field-row { display: flex; gap: 14px; margin-bottom: 14px; }
.field-row .field { margin-bottom: 0; flex: 1; }
.field-label {
  font-size: 8px; color: #2e2e2e;
  letter-spacing: 0.12em; margin-bottom: 5px;
  text-transform: uppercase;
}
.field-value {
  font-size: 13px; color: var(--text);
  border-bottom: 1px solid var(--border); padding-bottom: 5px;
  line-height: 1.3;
}
.field-value.dim { color: var(--dim); font-style: italic; font-size: 11px; }

/* editable */
[contenteditable="true"] {
  cursor: text;
  transition: border-color 0.1s;
}
[contenteditable="true"]:focus {
  outline: none;
  border-bottom-color: #2a2a2a;
  color: var(--text);
}
[contenteditable="true"]:empty::before {
  content: attr(data-ph);
  color: var(--dim);
  font-style: italic;
  font-size: 11px;
}

.field-input {
  width: 100%; display: block;
  font-size: 13px; color: var(--text);
  border-bottom: 1px solid var(--border); padding-bottom: 5px;
  background: none; transition: border-color 0.1s;
}
.field-input:focus { border-bottom-color: #2a2a2a; }
.field-input::placeholder { color: var(--dim); font-style: italic; font-size: 11px; }
.field-input[type=number] { -moz-appearance: textfield; }
.field-input[type=number]::-webkit-outer-spin-button,
.field-input[type=number]::-webkit-inner-spin-button { -webkit-appearance: none; }

.field-select {
  width: 100%; background: none; cursor: pointer;
  font-size: 12px; color: var(--text);
  border-bottom: 1px solid var(--border); padding-bottom: 5px;
}
.field-select:focus { outline: none; }
option { background: #111; color: var(--text); }

/* ── buttons ── */
.btn-row { display: flex; gap: 8px; margin-top: 20px; }

.btn-primary {
  background: var(--green); color: #000;
  font-size: 11px; padding: 12px 16px; border-radius: 2px;
  cursor: pointer; border: none; letter-spacing: 0.06em;
  font-family: var(--font-mono);
}
.btn-primary:active { background: #2aee5a; }

.btn-secondary {
  border: 1px solid #1e1e1e; color: var(--muted);
  font-size: 11px; padding: 12px 16px; border-radius: 2px;
  cursor: pointer; background: none; letter-spacing: 0.05em;
  font-family: var(--font-mono);
}
.btn-secondary:active { border-color: #2a2a2a; color: var(--text-dim); }

.btn-danger {
  border: 1px solid #e24b4a22; color: #e24b4a55;
  font-size: 11px; padding: 12px 16px; border-radius: 2px;
  cursor: pointer; background: none; letter-spacing: 0.05em;
  font-family: var(--font-mono);
}
.btn-danger:active { border-color: #e24b4a66; color: var(--red); }

.btn-block {
  display: block; width: 100%;
  font-size: 11px; padding: 12px; border-radius: 2px;
  text-align: center; cursor: pointer; margin-bottom: 8px;
  letter-spacing: 0.06em; font-family: var(--font-mono);
}
.btn-block.primary { background: var(--green); color: #000; border: none; }
.btn-block.primary:active { background: #2aee5a; }
.btn-block.secondary { border: 1px solid #1e1e1e; color: var(--muted); background: none; }
.btn-block.secondary:active { border-color: #2a2a2a; }
.btn-block.danger { border: 1px solid #e24b4a22; color: #e24b4a55; background: none; }
.btn-block.danger:active { border-color: #e24b4a66; color: var(--red); }

/* ── pricing grid ── */
.pricing-grid {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  border: 1px solid #181818; border-radius: 3px; overflow: hidden;
  margin-bottom: 8px;
}
.pg-cell {
  padding: 9px 10px; border-right: 1px solid #141414; border-bottom: 1px solid #141414;
}
.pg-cell:nth-child(3n) { border-right: none; }
.pg-cell:nth-last-child(-n+3) { border-bottom: none; }
.pg-label { font-size: 8px; color: #2a2a2a; letter-spacing: 0.08em; margin-bottom: 5px; }

/* ── pills ── */
.pill {
  font-size: 9px; padding: 4px 10px; border-radius: 2px;
  border: 1px solid #181818; color: #303030;
  white-space: nowrap; cursor: pointer; flex-shrink: 0;
  letter-spacing: 0.04em; font-family: var(--font-mono);
}
.pill.active { border-color: #39ff6a33; color: var(--green); background: #39ff6a07; }
.pill:active { border-color: #222; }

/* ── collapsibles ── */
.collapsible { border: 1px solid #181818; border-radius: 3px; margin-bottom: 8px; }
.coll-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 12px; cursor: pointer; user-select: none;
}
.coll-header:active { background: #111; }
.coll-title { font-size: 9px; color: var(--green); letter-spacing: 0.1em; }
.coll-state { font-size: 9px; color: var(--dim); }
.coll-body { padding: 12px 12px 4px; border-top: 1px solid #181818; background: #0c0c0c; display: none; }
.collapsible.open .coll-body { display: block; }
.collapsible.open .coll-state { color: #444; }

/* ── toast ── */
#toast {
  position: absolute; bottom: calc(var(--nav-h) + 10px); left: 50%;
  transform: translateX(-50%);
  background: #161616; border: 1px solid var(--border);
  border-radius: 3px; padding: 7px 14px;
  font-size: 10px; color: var(--text); letter-spacing: 0.04em;
  z-index: 99; opacity: 0; transition: opacity 0.12s;
  pointer-events: none; white-space: nowrap;
}
#toast.show { opacity: 1; }
#toast.ok { border-color: #39ff6a33; color: var(--green); }
#toast.err { border-color: #e24b4a44; color: var(--red); }

/* ── modal ── */
.modal-overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.8); z-index: 200;
  display: none; align-items: center; justify-content: center;
}
.modal-overlay.show { display: flex; }
.modal-box {
  background: #111; border: 1px solid #222; border-radius: 4px;
  padding: 22px; max-width: 300px; width: 90%;
}
.modal-title { font-size: 9px; color: var(--green); margin-bottom: 10px; letter-spacing: 0.1em; }
.modal-msg { font-size: 12px; color: var(--text); margin-bottom: 16px; line-height: 1.6; }
.modal-input {
  width: 100%; background: #0e0e0e; border: 1px solid #1e1e1e;
  border-radius: 2px; padding: 9px 11px;
  font-size: 13px; color: var(--text); margin-bottom: 14px;
}
.modal-input:focus { outline: none; border-color: #2a2a2a; }
.modal-btns { display: flex; gap: 8px; }
.modal-btns button { flex: 1; }