/* ─────────────────────────────────────────────
   AMPACITIES · auth pages
   Shared styles for /signin · /signup · /forgot
   Depends on tokens declared by /shared/_shared.css
   ───────────────────────────────────────────── */

/* ─────  Stage  ───── */
.auth-stage {
  min-height: calc(100vh - 64px);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: start;
}
.auth-stage > .pane {
  position: relative;
  padding: 88px 72px 72px;
  display: flex; flex-direction: column;
  gap: 56px;
}
.auth-stage > .pane.left {
  border-right: 1px solid var(--rule);
  position: sticky;
  top: 64px;
  min-height: calc(100vh - 64px);
  justify-content: space-between;
}
.auth-stage > .pane.right {
  background: var(--bg-deepest);
  justify-content: flex-start;
  min-height: calc(100vh - 64px);
}
.auth-stage.compact { grid-template-columns: 1fr; min-height: calc(100vh - 64px); }
.auth-stage.compact > .pane.left { border-right: none; position: static; min-height: auto; }

/* ─────  Eyebrow / chapter  ───── */
.auth-chapter {
  display: inline-flex; align-items: baseline; gap: 12px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.3em;
  color: var(--ink-mute);
  text-transform: uppercase;
  padding-bottom: 22px;
}
.auth-chapter::before {
  content: '';
  display: inline-block;
  width: 28px; height: 1px;
  background: var(--accent);
  transform: translateY(-3px);
}
.auth-chapter .roman {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  color: var(--accent);
  font-size: 16px;
  letter-spacing: 0;
}

/* ─────  Headlines  ───── */
.auth-head h1 {
  font-family: 'Antonio', sans-serif;
  font-weight: 300;
  font-size: clamp(54px, 7.2vw, 112px);
  line-height: 0.9;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}
.auth-head h1 .strong { font-weight: 600; }
.auth-head h1 .it {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-weight: 400;
  text-transform: none;
  color: var(--accent);
  letter-spacing: -0.005em;
}
.auth-head .lede {
  margin-top: 28px;
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink-soft);
  max-width: 30ch;
}
.auth-head .lede .a {
  color: var(--accent);
  font-style: normal;
  font-family: 'Antonio', sans-serif;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 18px;
}

/* ─────  Aside marginalia (left pane footer)  ───── */
.auth-asides {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--rule);
}
.auth-asides .col .col-label {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 400;
  margin-bottom: 10px;
}
.auth-asides .col p {
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.6;
  max-width: 36ch;
}
.auth-asides .col p .it {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  color: var(--accent);
}
.auth-asides .col .quote {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: 17px;
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 36ch;
}
.auth-asides .col .quote .attr {
  display: block;
  margin-top: 10px;
  font-family: 'IBM Plex Mono', monospace;
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--ink-mute);
  text-transform: uppercase;
}

/* ─────  Form card  ───── */
.auth-card {
  width: 100%;
  max-width: 520px;
  background: color-mix(in srgb, var(--bg-card) 88%, transparent);
  border: 1px solid var(--rule);
  padding: 48px 44px 40px;
  position: relative;
  margin: 0 auto;
}
.auth-card::before {
  content: '';
  position: absolute;
  top: -1px; left: -1px; right: -1px;
  height: 2px;
  background: var(--accent);
}
.auth-card .card-no {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--ink-mute);
  text-transform: uppercase;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 32px;
}
.auth-card .card-no .doc { color: var(--ink); }
.auth-card .card-no .doc em {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0;
  margin: 0 4px;
}
.auth-card h2 {
  font-family: 'Antonio', sans-serif;
  font-weight: 300;
  font-size: 32px;
  line-height: 1;
  letter-spacing: -0.005em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.auth-card h2 .it {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-weight: 400;
  text-transform: none;
  color: var(--accent);
  letter-spacing: 0;
}
.auth-card h2 .strong { font-weight: 600; }
.auth-card .sub {
  font-size: 13.5px;
  color: var(--ink-mute);
  margin-bottom: 28px;
}

/* ─────  Form fields  ───── */
.auth-form { display: flex; flex-direction: column; gap: 22px; }
.auth-row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 400;
  display: flex; align-items: baseline; justify-content: space-between;
}
.field label .opt {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0;
  color: var(--ink-mute);
  text-transform: none;
}
.field input[type="text"],
.field input[type="email"],
.field input[type="password"],
.field input[type="tel"],
.field select {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.005em;
  padding: 10px 0 12px;
  outline: none;
  transition: border-color 0.4s;
}
.field input::placeholder { color: var(--ink-mute); opacity: 0.6; }
.field input:focus,
.field select:focus { border-bottom-color: var(--accent); }
.field .hint {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  margin-top: 2px;
}
.field .pw-wrap { position: relative; }
.field .pw-wrap input { padding-right: 56px; }
.field .pw-toggle {
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-mute);
  cursor: pointer;
  padding: 4px 0 4px 8px;
  transition: color 0.3s;
}
.field .pw-toggle:hover { color: var(--accent); }

/* ─────  Checkbox  ───── */
.auth-check {
  display: inline-flex; align-items: center; gap: 12px;
  cursor: pointer;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  user-select: none;
}
.auth-check input {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.auth-check .box {
  width: 16px; height: 16px;
  border: 1px solid var(--rule);
  display: inline-grid; place-items: center;
  transition: border-color 0.3s, background 0.3s;
  flex-shrink: 0;
}
.auth-check .box::after {
  content: '';
  width: 8px; height: 8px;
  background: var(--accent);
  transform: scale(0);
  transition: transform 0.25s cubic-bezier(.7,.05,.18,1);
}
.auth-check input:checked + .box { border-color: var(--accent); }
.auth-check input:checked + .box::after { transform: scale(1); }
.auth-check:hover .box { border-color: var(--ink-soft); }
.auth-check.tight { margin-top: 4px; }
.auth-check input:focus-visible + .box { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ─────  Tier picker (signup)  ───── */
.tier-picker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--rule);
  margin-bottom: 24px;
}
.tier-opt {
  position: relative;
  padding: 18px 16px;
  cursor: pointer;
  display: flex; flex-direction: column; gap: 6px;
  border-right: 1px solid var(--rule);
  background: transparent;
  transition: background 0.35s, color 0.35s;
}
.tier-opt:last-child { border-right: none; }
.tier-opt input {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.tier-opt:focus-within { outline: 2px solid var(--accent); outline-offset: -2px; }
.tier-opt .t-no {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--ink-mute);
  text-transform: uppercase;
  min-height: 14px;
}
.tier-opt .t-no .badge {
  color: var(--accent);
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: 11px;
  letter-spacing: 0;
  text-transform: none;
  white-space: nowrap;
}
.tier-opt .t-name {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: 22px;
  color: var(--ink);
  line-height: 1;
}
.tier-opt .t-price {
  font-family: 'Antonio', sans-serif;
  font-weight: 400;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}
.tier-opt .t-price .unit { color: var(--ink-mute); font-size: 11px; margin-left: 4px; }
.tier-opt .t-price.words {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  color: var(--accent);
  font-size: 16px;
  letter-spacing: 0;
}
.tier-opt::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(.7,.05,.18,1);
}
.tier-opt:hover { background: color-mix(in srgb, var(--accent) 6%, transparent); }
.tier-opt.is-selected { background: color-mix(in srgb, var(--accent) 11%, transparent); }
.tier-opt.is-selected::after { transform: scaleX(1); }
.tier-opt.is-selected .t-name { color: var(--accent); }

/* ─────  Submit button  ───── */
.auth-submit {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  padding: 18px 22px;
  background: var(--ink);
  color: var(--bg);
  border: 1px solid var(--ink);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 14px; justify-content: space-between;
  transition: all 0.5s cubic-bezier(.7,.05,.18,1);
  position: relative; overflow: hidden;
  width: 100%;
  margin-top: 8px;
}
.auth-submit::before {
  content: '';
  position: absolute; inset: 0;
  background: var(--accent);
  transform: translateY(101%);
  transition: transform 0.5s cubic-bezier(.7,.05,.18,1);
  z-index: 0;
}
.auth-submit span, .auth-submit .arr { position: relative; z-index: 1; }
.auth-submit:hover::before { transform: translateY(0); }
.auth-submit:hover { border-color: var(--accent); color: var(--ink); }
.auth-submit .arr { font-family: 'Instrument Serif', serif; font-style: italic; font-size: 16px; }

/* ─────  Foot links  ───── */
.auth-foot {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--rule);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-mute);
  gap: 12px;
}
.auth-foot.inline {
  margin-top: 4px;
  padding-top: 0;
  border-top: none;
}
.auth-foot a {
  color: var(--ink-soft);
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
  position: relative;
  padding-bottom: 4px;
  transition: color 0.3s;
}
.auth-foot a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(.7,.05,.18,1);
}
.auth-foot a:hover { color: var(--accent); }
.auth-foot a:hover::after { transform: scaleX(1); }
.auth-foot a .arr { font-family: 'Instrument Serif', serif; font-style: italic; font-size: 13px; letter-spacing: 0; text-transform: none; }

/* ─────  Divider with label  ───── */
.auth-or {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 14px;
  margin: 18px 0 10px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.auth-or::before, .auth-or::after {
  content: '';
  height: 1px;
  background: var(--rule);
}

/* ─────  Social / SSO row  ───── */
.auth-sso {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.sso-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 16px;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.4s, color 0.4s;
}
.sso-btn:hover { border-color: var(--accent); color: var(--accent); }
.sso-btn svg { width: 14px; height: 14px; }

/* ─────  Compact / centered variant (forgot)  ───── */
.auth-stage.compact .pane.left {
  padding: 96px 72px 80px;
  align-items: center;
  justify-content: flex-start;
}
.auth-stage.compact .pane.left .compact-inner {
  width: 100%;
  max-width: 720px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.auth-stage.compact .auth-chapter { justify-content: center; }
.auth-stage.compact .auth-head { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.auth-stage.compact .auth-head .lede { text-align: center; }
.auth-stage.compact .auth-card {
  max-width: 560px;
  margin: 56px auto 0;
  text-align: left;
}
.auth-stage.compact .auth-card .field input,
.auth-stage.compact .auth-card .field .hint { text-align: left; }
.auth-stage.compact .auth-card .auth-foot a { text-align: left; }

/* ─────  Small / status notes  ───── */
.auth-notice {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--rule);
  border-left: 2px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 5%, transparent);
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.5;
  margin-bottom: 24px;
}
.auth-notice.success { margin-top: 24px; margin-bottom: 0; }
.auth-notice.error {
  border-left-color: #b5523a;
  background: color-mix(in srgb, #b5523a 7%, transparent);
  color: var(--ink);
}
.auth-notice.error .n-tag { color: #b5523a; }
.auth-notice[hidden] { display: none; }
.auth-notice .n-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
  padding-top: 2px;
}

/* ─────  Responsive  ───── */
@media (max-width: 1100px) {
  .auth-stage { grid-template-columns: 1fr; }
  .auth-stage > .pane.left {
    border-right: none;
    border-bottom: 1px solid var(--rule);
    padding: 64px 48px 48px;
    position: static;
    min-height: auto;
    justify-content: flex-start;
  }
  .auth-stage > .pane.right { padding: 48px 48px 80px; min-height: auto; }
  .auth-head h1 { font-size: clamp(48px, 10vw, 84px); }
}
@media (max-width: 720px) {
  .auth-stage > .pane.left,
  .auth-stage > .pane.right { padding: 48px 28px; }
  .auth-card { padding: 32px 24px; }
  .auth-row { grid-template-columns: 1fr; gap: 22px; }
  .auth-asides { grid-template-columns: 1fr; gap: 22px; }
  .tier-picker { grid-template-columns: 1fr; }
  .tier-opt { border-right: none; border-bottom: 1px solid var(--rule); }
  .tier-opt:last-child { border-bottom: none; }
  .auth-sso { grid-template-columns: 1fr; }
  .auth-foot { flex-direction: column; gap: 14px; align-items: flex-start; }
}