/* LT v0.1 — dark, sterile, high-legibility interface */

:root {
  --bg: #0b0f14;
  --bg-raise: #121820;
  --bg-card: #161d27;
  --line: #263241;
  --text: #e8eef4;
  --text-dim: #93a3b3;
  --accent: #37b6ff;
  --accent-dim: #1a5e85;
  --ok: #35d07f;
  --warn: #ffb03a;      /* critical amber */
  --danger: #ff5d5d;
  --radius: 14px;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.45;
  overscroll-behavior: none;
}

/* ---------- screens ---------- */
.screen {
  display: none;
  min-height: 100dvh;
  flex-direction: column;
  padding: max(env(safe-area-inset-top), 12px) 16px max(env(safe-area-inset-bottom), 16px);
}
.screen.active { display: flex; }

.bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0 14px;
}
.bar h2 { font-size: 1.05rem; letter-spacing: 0.12em; font-weight: 600; }

/* ---------- buttons ---------- */
.btn {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raise);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 14px 18px;
  cursor: pointer;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}
.btn:active { filter: brightness(1.25); }
.btn-primary { background: var(--accent-dim); border-color: var(--accent); }
.btn-secondary { background: var(--bg-card); }
.btn-tertiary { background: transparent; color: var(--text-dim); }
.btn-big { padding: 20px; font-size: 1.15rem; }
.btn-back {
  width: auto; padding: 8px 14px; font-size: 0.85rem;
  color: var(--text-dim); background: transparent;
}
.btn-danger-ghost { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn[disabled] { opacity: 0.4; pointer-events: none; }

/* ---------- home ---------- */
.home-header { text-align: center; padding: 12vh 0 6vh; }
.app-title { font-size: 2.4rem; font-weight: 800; letter-spacing: 0.18em; }
.app-version { color: var(--text-dim); font-size: 0.85rem; margin-top: 2px; }
.kc-title { margin-top: 18px; color: var(--accent); font-size: 1.05rem; }
.home-actions { display: flex; flex-direction: column; gap: 14px; max-width: 420px; width: 100%; margin: 0 auto; }
.home-footer { margin-top: auto; text-align: center; color: var(--text-dim); font-size: 0.8rem; padding-top: 24px; }

/* ---------- review ---------- */
.review-hint { color: var(--text-dim); font-size: 0.9rem; padding-bottom: 14px; }
.review-list { display: flex; flex-direction: column; gap: 12px; padding-bottom: 24px; }
.review-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
}
.review-item.critical { border-color: var(--warn); }
.review-item h3 { font-size: 1rem; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.step-num { color: var(--text-dim); font-weight: 700; }
.badge-critical {
  background: var(--warn); color: #14100a;
  font-size: 0.65rem; font-weight: 800; letter-spacing: 0.1em;
  border-radius: 5px; padding: 2px 7px;
}
.badge-safety {
  background: var(--danger); color: #fff;
  font-size: 0.65rem; font-weight: 800; letter-spacing: 0.1em;
  border-radius: 5px; padding: 2px 7px;
}
.badge-phase {
  background: transparent; color: var(--text-dim); border: 1px solid var(--line);
  font-size: 0.65rem; font-weight: 800; letter-spacing: 0.1em;
  border-radius: 5px; padding: 2px 7px;
}
.review-item.safety { border-color: var(--danger); }
.review-assertion {
  margin-top: 8px; padding: 8px 12px; border-left: 3px solid var(--danger);
  background: rgba(255, 93, 93, 0.08); font-size: 0.88rem; border-radius: 0 8px 8px 0;
}
.review-item .review-instruction { color: var(--text-dim); font-size: 0.88rem; margin-top: 6px; }
.review-item video {
  width: 100%; margin-top: 10px; border-radius: 8px; background: #000;
  max-height: 52vh;
}
.no-video { margin-top: 10px; color: var(--text-dim); font-size: 0.8rem; font-style: italic; }
.manual-link {
  display: block; margin-top: 10px; text-align: center; text-decoration: none;
  font-size: 0.85rem; color: var(--accent); border-color: var(--accent-dim);
}

/* ---------- auth / profile / library ---------- */
.auth-wrap {
  display: flex; flex-direction: column; gap: 14px;
  max-width: 420px; width: 100%; align-self: center; padding-bottom: 24px;
}
.auth-wrap h2 { font-size: 1.1rem; letter-spacing: 0.1em; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 0.8rem; color: var(--text-dim); letter-spacing: 0.08em; }
.field input {
  padding: 14px; font: inherit; font-size: 1.05rem;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: 10px;
}
.field input:focus { outline: 2px solid var(--accent); }
/* The login screen must fit a phone without scrolling: compress the big
   home-style header so the mode-toggle button stays on screen. */
#screen-auth .home-header { padding: 4vh 0 3vh; }
#screen-auth .app-title { font-size: 1.6rem; }

.pw-row { display: flex; gap: 8px; }
.pw-row input { flex: 1; min-width: 0; }
.pw-toggle {
  flex: none; padding: 0 16px; font: inherit; font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.08em; color: var(--text-dim);
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 10px;
}
.auth-divider {
  text-align: center; color: var(--text-dim); font-size: 0.8rem; letter-spacing: 0.08em;
  display: flex; align-items: center; gap: 12px;
}
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--line); }
.label-hint { font-weight: 400; text-transform: none; letter-spacing: 0; }
.auth-msg { min-height: 1.4em; font-size: 0.9rem; color: var(--text-dim); }
.auth-msg.bad { color: var(--danger); }
.auth-msg.ok { color: var(--ok); }

.screen-sub { color: var(--text-dim); font-size: 0.9rem; padding-bottom: 12px; }
.offline-note {
  background: rgba(255, 193, 7, 0.08); border-left: 3px solid var(--warn);
  padding: 10px 12px; font-size: 0.85rem; border-radius: 0 8px 8px 0; margin-bottom: 12px;
}
.profile-list { display: flex; flex-direction: column; gap: 10px; padding-bottom: 18px; }
.profile-row { display: flex; gap: 8px; }
.profile-row .btn:first-child { flex: 1; min-width: 0; }
.row-edit { width: auto; flex: none; padding: 10px 16px; font-size: 1rem; }
#profile-enterprise { display: flex; align-items: center; gap: 10px; }
.stack-actions { display: flex; flex-direction: column; gap: 10px; padding-bottom: 24px; margin-top: auto; }

.kc-list { display: flex; flex-direction: column; gap: 10px; padding-bottom: 18px; }
.kc-card {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px; cursor: pointer;
}
.kc-card:active { filter: brightness(1.25); }
.kc-card h3 { font-size: 1.1rem; margin-bottom: 4px; }
.kc-card .kc-meta { color: var(--text-dim); font-size: 0.82rem; }
.card-row { display: flex; align-items: center; gap: 12px; }
.card-row .card-main { flex: 1; min-width: 0; }
.card-row .card-edit {
  flex: none; color: var(--accent); border: 1px solid var(--accent-dim);
  border-radius: 8px; padding: 6px 10px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em;
}
.kc-type-tag {
  display: inline-block; font-size: 0.68rem; letter-spacing: 0.1em; font-weight: 700;
  color: var(--accent); border: 1px solid var(--accent-dim);
  border-radius: 6px; padding: 2px 8px; margin-bottom: 8px;
}

/* ---------- step builder ---------- */
.builder-body { display: flex; flex-direction: column; gap: 14px; padding-bottom: 24px; }
.builder-list { display: flex; flex-direction: column; gap: 10px; }
textarea {
  width: 100%; padding: 14px; font: inherit; font-size: 1rem;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: 10px; resize: vertical;
}
textarea:focus { outline: 2px solid var(--accent); }
.eq-thumb { width: 100%; max-height: 220px; object-fit: cover; border-radius: 10px; border: 1px solid var(--line); }
.video-note { color: var(--text-dim); font-size: 0.85rem; }
.radio-item {
  display: flex; gap: 12px; align-items: center;
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 10px; padding: 12px 14px; cursor: pointer;
}
.radio-item input { width: 24px; height: 24px; accent-color: var(--accent); flex: none; }

.capture-overlay {
  position: fixed; inset: 0; background: #000; z-index: 60;
  display: flex; flex-direction: column;
}
.capture-overlay video { flex: 1; width: 100%; min-height: 0; object-fit: contain; background: #000; }
.rec-timer {
  text-align: center; color: #fff; font-weight: 700; padding: 8px;
  font-variant-numeric: tabular-nums;
}
.rec-timer.rec { color: var(--danger); }
.rec-controls { display: flex; gap: 10px; padding: 12px 16px calc(16px + env(safe-area-inset-bottom)); }
.rec-controls .btn { flex: 1; }

/* ---------- gates ---------- */
.gate-progress { display: flex; gap: 6px; padding-bottom: 16px; }
.gate-progress .dot {
  flex: 1; height: 5px; border-radius: 3px; background: var(--line);
}
.gate-progress .dot.done { background: var(--ok); }
.gate-progress .dot.now { background: var(--accent); }

.gate-body { display: flex; flex-direction: column; gap: 14px; padding-bottom: 24px; }
.gate-heading { font-size: 1.2rem; font-weight: 700; }
.gate-sub { color: var(--text-dim); font-size: 0.9rem; }

.label-card {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px; text-align: center;
}
.label-card .label-prompt { color: var(--text-dim); font-size: 0.9rem; }
.label-card .label-name { font-size: 1.6rem; font-weight: 800; letter-spacing: 0.08em; margin: 10px 0; }
.label-input {
  width: 100%; padding: 14px; font: inherit; font-size: 1.2rem; text-align: center;
  text-transform: uppercase; letter-spacing: 0.06em;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: 10px; margin-top: 8px;
}
.label-input:focus { outline: 2px solid var(--accent); }
.mismatch-note { color: var(--danger); font-size: 0.9rem; min-height: 1.4em; }

.decl-card {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px;
  font-size: 1.02rem;
}
.decl-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 14px; }

.attest-fineprint { color: var(--text-dim); font-size: 0.78rem; margin-top: 12px; }
.attest-check {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px; cursor: pointer;
}
.attest-check input { width: 24px; height: 24px; margin-top: 3px; flex: none; accent-color: var(--accent); }

/* checkbox gate lists (Gate 0 labels, Gate 1 declarations) */
.check-list { display: flex; flex-direction: column; gap: 10px; }
.check-item {
  display: flex; gap: 16px; align-items: center;
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px 16px; cursor: pointer;
}
.check-item input { width: 48px; height: 48px; flex: none; accent-color: var(--accent); }
.check-item.checked { border-color: var(--ok); }
.check-item .check-name { font-size: 1.2rem; font-weight: 800; letter-spacing: 0.08em; }
.check-item .check-decl { font-size: 0.98rem; line-height: 1.5; }
.na-active { border-color: var(--accent); color: var(--accent); }

/* critical_safety assertion (stage 2): red until actively checked */
.check-item.assert-item { border-color: var(--danger); background: rgba(255, 93, 93, 0.05); }
.check-item.assert-item input { accent-color: var(--danger); }
.check-item.assert-item.checked { border-color: var(--ok); background: var(--bg-card); }

/* Gate 0 QR-verified items */
.scan-row { cursor: default; }
.scan-row .scan-main { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.scan-row .scan-btn { width: auto; flex: none; padding: 12px 16px; font-size: 0.85rem; }
.scan-row .scan-note { min-height: 0; }
.scan-row .scan-fallback { width: auto; align-self: flex-start; padding: 8px 12px; font-size: 0.75rem; }

/* ---------- session (sterile) ---------- */
.sterile { background: #05080c; }
.session-bar {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 10px;
}
.session-progress { font-size: 0.95rem; letter-spacing: 0.15em; color: var(--text-dim); font-weight: 700; }
.btn-pause { width: auto; padding: 8px 16px; font-size: 0.8rem; background: transparent; color: var(--text-dim); }
.btn-abort {
  width: auto; padding: 8px 14px; font-size: 0.8rem; background: transparent;
  color: var(--danger); border: 1px solid var(--danger); margin-left: auto; margin-right: 10px;
}

.session-body { display: flex; flex-direction: column; gap: 16px; flex: 1; padding-bottom: 20px; }

.step-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: var(--bg-raise);
}
.step-card.critical { border: 2px solid var(--warn); }
.step-card.safety { border: 2px solid var(--danger); }
.critical-banner {
  background: var(--warn); color: #14100a;
  font-weight: 800; letter-spacing: 0.18em; text-align: center;
  border-radius: 8px; padding: 8px; margin-bottom: 14px; font-size: 0.85rem;
}
.critical-banner.safety { background: var(--danger); color: #fff; }
.step-title { font-size: 1.3rem; font-weight: 700; margin-bottom: 4px; }
.step-label-tag { color: var(--accent); font-size: 0.8rem; letter-spacing: 0.1em; font-weight: 700; margin-bottom: 12px; }
.step-instruction { font-size: 1.12rem; line-height: 1.55; }
.failure-note {
  margin-top: 12px; padding: 10px 12px; border-left: 3px solid var(--danger);
  background: rgba(255, 93, 93, 0.08); font-size: 0.92rem; border-radius: 0 8px 8px 0;
}

.step-video { width: 100%; border-radius: 10px; background: #000; max-height: 44vh; }

.btn-replay {
  width: auto; align-self: center; padding: 10px 22px; font-size: 0.85rem;
  color: var(--accent); background: transparent; border-color: var(--accent-dim);
}

/* prerequisites (critical stage 1) */
.prereq-block { border: 1px solid var(--warn); border-radius: var(--radius); padding: 16px; background: rgba(255, 176, 58, 0.05); }
.prereq-block h4 { color: var(--warn); letter-spacing: 0.12em; font-size: 0.85rem; margin-bottom: 12px; }
.prereq-item {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 10px 0; border-bottom: 1px solid var(--line); cursor: pointer;
}
.prereq-item:last-of-type { border-bottom: none; }
.prereq-item input { width: 24px; height: 24px; flex: none; margin-top: 1px; accent-color: var(--warn); }

/* hold-to-confirm */
.hold-btn {
  position: relative;
  width: 100%;
  border: 2px solid var(--ok);
  border-radius: var(--radius);
  background: rgba(53, 208, 127, 0.1);
  color: var(--text);
  font: inherit; font-weight: 800; letter-spacing: 0.08em;
  padding: 22px 18px;
  overflow: hidden;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  cursor: pointer;
}
.hold-btn .hold-fill {
  position: absolute; inset: 0; width: 0%;
  background: rgba(53, 208, 127, 0.35);
  transition: none;
}
.hold-btn .hold-label { position: relative; z-index: 1; display: block; }
.hold-btn .hold-hint { position: relative; z-index: 1; display: block; font-weight: 400; font-size: 0.75rem; color: var(--text-dim); margin-top: 4px; letter-spacing: 0.04em; }
.hold-btn.warn { border-color: var(--warn); background: rgba(255, 176, 58, 0.1); }
.hold-btn.warn .hold-fill { background: rgba(255, 176, 58, 0.35); }
.hold-btn.danger { border-color: var(--danger); background: transparent; color: var(--danger); }
.hold-btn.danger .hold-fill { background: rgba(255, 93, 93, 0.35); }
.hold-btn[disabled] { opacity: 0.35; pointer-events: none; }

/* voice status */
.voice-status {
  display: flex; align-items: center; gap: 10px;
  color: var(--text-dim); font-size: 0.88rem; min-height: 1.6em;
}
.voice-status .mic-dot {
  width: 10px; height: 10px; border-radius: 50%; background: var(--line); flex: none;
}
.voice-status.listening .mic-dot { background: var(--danger); animation: pulse 1.2s infinite; }
@keyframes pulse { 50% { opacity: 0.35; } }
.callout-want { color: var(--accent); font-weight: 700; }
.countdown-num { font-size: 2em; font-weight: 700; color: var(--ok); line-height: 1; }

/* decision */
.decision-block { display: flex; flex-direction: column; gap: 14px; }
.decision-block .decision-prompt { font-size: 1.15rem; font-weight: 700; text-align: center; padding: 8px 0; }

/* step jump picker */
.step-pick { text-align: left; font-weight: 500; letter-spacing: 0.02em; }
.step-pick.selected { border-color: var(--accent); background: rgba(55, 182, 255, 0.14); }
.step-pick .badge-critical { float: right; }

/* pause */
.pause-wrap { display: flex; flex-direction: column; gap: 16px; margin: auto 0; text-align: center; max-width: 420px; width: 100%; align-self: center; }
.pause-timer { font-size: 3.4rem; font-weight: 800; letter-spacing: 0.06em; font-variant-numeric: tabular-nums; }
.pause-note { color: var(--text-dim); font-size: 0.9rem; }

/* reconfirm list */
.reconfirm-item {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 12px 14px; margin-bottom: 10px;
}
.reconfirm-item.done { border-color: var(--ok); opacity: 0.7; }
.reconfirm-item .btn { width: auto; padding: 10px 16px; font-size: 0.8rem; }

/* blocked */
.blocked-wrap { margin: auto 0; text-align: center; display: flex; flex-direction: column; gap: 16px; max-width: 420px; width: 100%; align-self: center; }
.blocked-icon { font-size: 3rem; color: var(--danger); }
.blocked-note { color: var(--text-dim); font-size: 0.85rem; }

/* summary */
.summary-body { display: flex; flex-direction: column; gap: 12px; padding-bottom: 20px; }
.summary-stat {
  display: flex; justify-content: space-between; gap: 12px;
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 10px; padding: 12px 16px;
}
.summary-stat .k { color: var(--text-dim); }
.summary-stat .v { font-weight: 700; }
.summary-actions { margin-top: auto; }

/* ledger */
.ledger-actions { display: flex; flex-direction: column; gap: 10px; padding-bottom: 18px; }
.verify-result { font-size: 0.92rem; min-height: 1.4em; }
.verify-result.ok { color: var(--ok); }
.verify-result.bad { color: var(--danger); }
.ledger-sessions { display: flex; flex-direction: column; gap: 12px; padding-bottom: 24px; }
.ledger-session-card {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px; font-size: 0.9rem;
}
.ledger-session-card h3 { font-size: 0.95rem; margin-bottom: 6px; }
.ledger-session-card .meta { color: var(--text-dim); }

/* ---------- product manual (customer view) ---------- */
.manual-body {
  display: flex; flex-direction: column; gap: 14px; padding-bottom: 24px;
  max-width: 560px; width: 100%; align-self: center;
}
.manual-product { text-align: center; padding: 8px 0 4px; }
.manual-product-name { font-size: 1.5rem; font-weight: 800; }
.manual-product-sub { color: var(--text-dim); font-size: 0.8rem; letter-spacing: 0.18em; margin-top: 2px; }
.section-row { display: flex; align-items: center; gap: 12px; text-align: left; padding: 18px; }
.section-row .section-name { flex: 1; min-width: 0; font-size: 1.05rem; }
.section-row .section-meta { color: var(--text-dim); font-size: 0.78rem; flex: none; }
.section-row .section-arrow { color: var(--accent); font-size: 1.3rem; flex: none; line-height: 1; }
.section-row.visited { border-color: var(--ok); }
.protocol-box {
  margin-top: 12px; padding: 12px 14px; border-left: 3px solid var(--danger);
  background: rgba(255, 93, 93, 0.06); border-radius: 0 8px 8px 0;
  font-size: 0.95rem; white-space: pre-wrap;
}

/* ---------- publish & QR (company) ---------- */
.publish-body { display: flex; flex-direction: column; gap: 14px; padding-bottom: 24px; }
.live-tag { color: var(--ok); font-weight: 700; }
.link-row { display: flex; gap: 8px; }
.link-row input {
  flex: 1; min-width: 0; padding: 12px; font: inherit; font-size: 0.8rem;
  color: var(--text-dim); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px;
}
.qr-card { background: #fff; border-radius: var(--radius); padding: 14px; align-self: flex-start; }
.qr-card img { display: block; width: 232px; height: 232px; image-rendering: pixelated; }
.reg-row {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 14px; font-size: 0.9rem;
  overflow-wrap: anywhere;
}
.reg-row .reg-date { color: var(--text-dim); flex: none; }
.reg-row .reg-emp { color: var(--text-dim); font-size: 0.82rem; }

/* modal */
.modal {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(0, 0, 0, 0.75);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal.hidden { display: none; }
.modal-card {
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px; max-width: 420px; width: 100%;
  font-size: 1.02rem;
}
.modal-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }