/* ─────────────────────────────────────────
   TOKENS
───────────────────────────────────────── */
:root {
  --bg:        #111214;
  --bg-2:      #18191d;
  --bg-3:      #1e2026;
  --border:    #2a2d35;
  --border-2:  #353841;
  --txt:       #e8eaf0;
  --txt-2:     #9099ad;
  --txt-3:     #5a6070;
  --accent:    #3b82f6;
  --accent-d:  #1d4ed8;
  --green:     #22c55e;
  --green-d:   #15803d;
  --red:       #ef4444;
  --red-d:     #b91c1c;
  --amber:     #f59e0b;
  --mono:      'IBM Plex Mono', monospace;
  --sans:      'IBM Plex Sans', sans-serif;
}

/* ─────────────────────────────────────────
   RESET + BASE
───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  height: 100%;
  -webkit-text-size-adjust: 100%;
  touch-action: pan-x pan-y;
}

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--txt);
  min-height: 100%;
  min-height: 100dvh;
  overscroll-behavior: none;
  -webkit-font-smoothing: antialiased;
  touch-action: pan-x pan-y;
  padding-bottom: env(safe-area-inset-bottom);
}

/* Kill number spinners */
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
input[type=number] { -moz-appearance: textfield; appearance: textfield; }

/* ─────────────────────────────────────────
   TOPBAR
───────────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 52px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  padding-left: max(12px, env(safe-area-inset-left));
  padding-right: max(12px, env(safe-area-inset-right));
}

.topbar-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  height: 30px;
  background: #fff;
  border-radius: 4px;
  padding: 4px 8px;
}
.logo-img {
  height: 22px;
  width: auto;
  display: block;
  object-fit: contain;
}
.logo-text {
  font-family: var(--mono);
  font-weight: 600;
  font-size: .9em;
  color: var(--bg);
  letter-spacing: .06em;
}

/* Tabs */
.tabs {
  display: flex;
  flex: 1;
  gap: 2px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px;
  height: 36px;
}
.tab {
  flex: 1;
  font-family: var(--mono);
  font-size: .7em;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--txt-3);
  background: transparent;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  padding: 4px 6px;
  transition: background .12s, color .12s;
  white-space: nowrap;
}
.tab.active {
  background: var(--accent);
  color: #fff;
}

/* Clear btn */
.clear-btn {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--txt-3);
  cursor: pointer;
  transition: border-color .12s, color .12s;
}
.clear-btn:active { color: var(--red); border-color: var(--red); }

/* ─────────────────────────────────────────
   TOAST
───────────────────────────────────────── */
.toast {
  position: fixed;
  top: 60px;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  color: var(--txt);
  font-family: var(--mono);
  font-size: .72em;
  letter-spacing: .06em;
  padding: 8px 16px;
  border-radius: 3px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s, transform .18s;
  z-index: 999;
  white-space: nowrap;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ─────────────────────────────────────────
   MAIN / PANELS
───────────────────────────────────────── */
main {
  padding: 0 12px 24px;
  padding-left: max(12px, env(safe-area-inset-left));
  padding-right: max(12px, env(safe-area-inset-right));
  max-width: 480px;
  margin: 0 auto;
}

.panel { display: none; }
.panel.active { display: block; }

/* ─────────────────────────────────────────
   SECTION HEADER
───────────────────────────────────────── */
.section-head {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 0 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--mono);
  font-size: .7em;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--accent);
}
.section-desc {
  font-size: .8em;
  color: var(--txt-3);
  font-weight: 400;
}

/* ─────────────────────────────────────────
   COLUMN HEADERS
───────────────────────────────────────── */
.col-headers {
  display: grid;
  grid-template-columns: 44px 1fr 1fr;
  gap: 6px;
  margin-bottom: 4px;
  padding: 0 2px;
}
.col-headers.tight {
  grid-template-columns: 44px 1fr;
}
.col-h-label,
.col-h-val {
  font-family: var(--mono);
  font-size: .62em;
  letter-spacing: .1em;
  color: var(--txt-3);
  text-align: center;
}
.col-h-label { text-align: left; }

/* ─────────────────────────────────────────
   MEASUREMENT ROWS
───────────────────────────────────────── */
.mrow {
  display: grid;
  grid-template-columns: 44px 1fr 1fr;
  gap: 6px;
  align-items: center;
  margin-bottom: 6px;
}
.mrow.slim {
  grid-template-columns: 44px 1fr;
}

.row-label {
  font-family: var(--mono);
  font-size: .72em;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--txt-2);
  height: 44px;
  display: flex;
  align-items: center;
  cursor: default;
  user-select: none;
}

/* ─────────────────────────────────────────
   INPUT CELLS
───────────────────────────────────────── */
.inp-cell {
  position: relative;
  display: flex;
  align-items: center;
}
.inp-cell.wide { flex: 1; }

.inp-cell input {
  width: 100%;
  height: 44px;
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 500;
  color: var(--txt);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0 28px 0 10px;
  outline: none;
  transition: border-color .12s, background .12s;
  -webkit-appearance: none;
  appearance: none;
}
.inp-cell input:focus {
  border-color: var(--accent);
  background: var(--bg-3);
}
.inp-cell input::placeholder {
  color: var(--txt-3);
  font-weight: 400;
}

.inp-unit {
  position: absolute;
  right: 8px;
  font-family: var(--mono);
  font-size: .62em;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--txt-3);
  pointer-events: none;
  user-select: none;
}

/* ─────────────────────────────────────────
   FIELD GROUPS (Fit tab)
───────────────────────────────────────── */
.field-group {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  margin-bottom: 10px;
}
.fg-head {
  font-family: var(--mono);
  font-size: .65em;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--txt-2);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.fg-unit {
  font-weight: 400;
  color: var(--txt-3);
}

/* ─────────────────────────────────────────
   BUTTONS
───────────────────────────────────────── */
.run-btn {
  width: 100%;
  height: 48px;
  margin-top: 14px;
  font-family: var(--mono);
  font-size: .78em;
  font-weight: 600;
  letter-spacing: .14em;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background .12s, transform .08s;
}
.run-btn:active {
  background: var(--accent-d);
  transform: scale(.99);
}

.send-btn {
  display: block;
  width: 100%;
  height: 44px;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: .7em;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--green);
  background: transparent;
  border: 1px solid var(--green-d);
  border-radius: 4px;
  cursor: pointer;
  transition: background .12s, border-color .12s;
}
.send-btn:active { background: rgba(34,197,94,.08); }

.copy-all-btn {
  font-family: var(--mono);
  font-size: .6em;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--txt-3);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 4px 10px;
  cursor: pointer;
  transition: color .12s, border-color .12s;
}
.copy-all-btn:active { color: var(--txt); border-color: var(--txt-2); }

/* ─────────────────────────────────────────
   RESULTS PANEL
───────────────────────────────────────── */
.results-panel {
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-2);
}

.results-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: var(--bg-3);
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: .65em;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--txt-2);
}

/* Result sub-sections */
.res-section {
  border-bottom: 1px solid var(--border);
}
.res-section:last-child { border-bottom: none; }

.res-section-head {
  padding: 7px 12px;
  font-family: var(--mono);
  font-size: .6em;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--txt-3);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

/* Individual result rows */
.res-row {
  display: grid;
  grid-template-columns: 44px 1fr auto auto;
  align-items: center;
  gap: 8px;
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
}
.res-row:last-child { border-bottom: none; }

.res-dim {
  font-family: var(--mono);
  font-size: .68em;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--txt-2);
}

.res-val {
  font-family: var(--mono);
  font-size: .96em;
  font-weight: 600;
  color: var(--txt);
  text-align: right;
}
.res-val.pos { color: var(--green); }
.res-val.neg { color: var(--red); }

.res-raw {
  font-family: var(--mono);
  font-size: .65em;
  color: var(--txt-3);
  text-align: right;
}

.res-tag {
  font-family: var(--mono);
  font-size: .58em;
  font-weight: 600;
  letter-spacing: .06em;
  padding: 3px 6px;
  border-radius: 2px;
  white-space: nowrap;
}
.tag-shrunk { background: rgba(34,197,94,.12);  color: var(--green); }
.tag-grew   { background: rgba(239,68,68,.12);  color: var(--red);   }
.tag-zero   { background: rgba(90,96,112,.15);  color: var(--txt-3); }
.tag-pos    { background: rgba(34,197,94,.12);  color: var(--green); }
.tag-neg    { background: rgba(239,68,68,.12);  color: var(--red);   }

.cp-btn {
  background: none;
  border: none;
  color: var(--txt-3);
  padding: 4px;
  cursor: pointer;
  border-radius: 3px;
  display: flex;
  align-items: center;
  transition: color .12s;
  -webkit-tap-highlight-color: transparent;
}
.cp-btn:active { color: var(--txt); }

/* ─────────────────────────────────────────
   AVG ROW — same grid as res-row,
   visually separated with stronger border
───────────────────────────────────────── */
.res-avg-row {
  background: var(--bg-3);
  border-top: 1px solid var(--border-2) !important;
  border-bottom: none !important;
}
.res-avg-row .res-dim {
  color: var(--txt);
}

/* ─────────────────────────────────────────
   LOCK SCREEN
───────────────────────────────────────── */
#app-content { display: none; }

#lock-screen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 24px;
  padding-left: max(24px, env(safe-area-inset-left));
  padding-right: max(24px, env(safe-area-inset-right));
}

.lock-card {
  width: 100%;
  max-width: 360px;
}

.lock-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 28px;
}
.lock-logo-badge {
  height: 30px;
  display: flex;
  align-items: center;
  background: #fff;
  border-radius: 4px;
  padding: 4px 10px;
}
.lock-logo-badge img { height: 22px; width: auto; display: block; }
.lock-logo-badge .logo-text {
  font-family: var(--mono);
  font-weight: 600;
  font-size: .9em;
  color: var(--bg);
  letter-spacing: .06em;
}

.lock-icon {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--txt-3);
}

.lock-title {
  font-family: var(--mono);
  font-size: .78em;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--accent);
  text-align: center;
  margin-bottom: 4px;
}
.lock-desc {
  font-size: .8em;
  color: var(--txt-3);
  text-align: center;
  margin-bottom: 24px;
}

.lock-field {
  position: relative;
  margin-bottom: 14px;
}
.lock-field input {
  width: 100%;
  height: 48px;
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 500;
  color: var(--txt);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0 40px 0 14px;
  outline: none;
  transition: border-color .12s, background .12s;
  -webkit-appearance: none;
  appearance: none;
  letter-spacing: .04em;
}
.lock-field input:focus {
  border-color: var(--accent);
  background: var(--bg-3);
}
.lock-field input::placeholder {
  color: var(--txt-3);
  font-weight: 400;
}

.lock-toggle {
  position: absolute;
  right: 4px;
  top: 4px;
  height: 40px;
  width: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--txt-3);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.lock-toggle:active { color: var(--txt); }

.lock-error {
  font-family: var(--mono);
  font-size: .68em;
  letter-spacing: .05em;
  color: var(--red);
  text-align: center;
  min-height: 16px;
  margin-bottom: 6px;
  opacity: 0;
  transition: opacity .12s;
}
.lock-error.show { opacity: 1; }

.lock-btn {
  width: 100%;
  height: 48px;
  margin-top: 6px;
  font-family: var(--mono);
  font-size: .78em;
  font-weight: 600;
  letter-spacing: .14em;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background .12s, transform .08s;
}
.lock-btn:active {
  background: var(--accent-d);
  transform: scale(.99);
}

.lock-shake { animation: lockShake .32s; }
@keyframes lockShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

/* ─────────────────────────────────────────
   FOOTER
───────────────────────────────────────── */
.app-footer {
  text-align: center;
  padding: 18px 12px;
  padding-bottom: max(18px, env(safe-area-inset-bottom));
  font-family: var(--mono);
  font-size: .58em;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--txt-3);
  border-top: 1px solid var(--border);
  margin-top: 8px;
  user-select: none;
}