/* ================================================================
   INVARIANT — Editorial Auth Pages
   Shared styles for /login and /welcome (matching landing page tone).
   ================================================================ */

:root {
  --color-bg:        #faf9f5;
  --color-surface:   #e8e6dc;
  --color-ink:       #141413;
  --color-muted:     #b0aea5;
  --color-accent:    #8c5e45;

  --ink-90: rgba(20, 20, 19, 0.90);
  --ink-70: rgba(20, 20, 19, 0.70);
  --ink-55: rgba(20, 20, 19, 0.55);
  --ink-40: rgba(20, 20, 19, 0.40);
  --ink-18: rgba(20, 20, 19, 0.18);
  --ink-12: rgba(20, 20, 19, 0.12);
  --ink-08: rgba(20, 20, 19, 0.08);
  --rule:   rgba(176, 174, 165, 0.55);
  --rule-soft: rgba(176, 174, 165, 0.35);

  --font-serif: "Lora", "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-sans:  "Poppins", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono:  "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;

  --container-max: 1240px;
  --container-pad: clamp(1.25rem, 4vw, 2.75rem);
  --header-h: 68px;
  --radius-input: 6px;
  --radius-pill: 999px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 200ms;
  --dur-base: 280ms;
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html, body { background: var(--color-bg); color: var(--color-ink); }

body.auth-page {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
button { background: none; border: 0; cursor: pointer; font: inherit; color: inherit; }
img, svg { max-width: 100%; display: block; }

::selection { background: var(--color-accent); color: var(--color-bg); }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; border-radius: 2px; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.12;
}

/* ----------------------------------------------------------------
   Page shell
---------------------------------------------------------------- */
.auth-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
}

.auth-shell-narrow {
  grid-template-columns: 1fr;
}

.auth-aside {
  position: relative;
  background: var(--color-surface);
  padding: clamp(2.5rem, 6vw, 4.5rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-right: 1px solid var(--rule);
  overflow: hidden;
}

.auth-aside::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 60%;
  background: radial-gradient(120% 80% at 0% 100%,
              rgba(140, 94, 69, 0.12) 0%,
              rgba(140, 94, 69, 0) 60%);
  pointer-events: none;
}

.auth-aside > * { position: relative; z-index: 1; }

.auth-aside-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-55);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.auth-aside-eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--ink-40);
}

.auth-aside-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.6vw, 3rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin-top: 1.6rem;
  max-width: 18ch;
}

.auth-aside-title em {
  font-style: italic;
  color: var(--color-accent);
}

.auth-aside-lede {
  margin-top: 1.8rem;
  font-size: 1.05rem;
  color: var(--ink-70);
  max-width: 34ch;
  line-height: 1.65;
}

.auth-aside-quote {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.1rem;
  line-height: 1.55;
  color: var(--ink-90);
  max-width: 34ch;
}

.auth-aside-quote-cite {
  display: block;
  margin-top: 0.9rem;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-55);
}

.auth-aside-foot {
  margin-top: 2.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-40);
}

/* ----------------------------------------------------------------
   Form column
---------------------------------------------------------------- */
.auth-main {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(2rem, 5vw, 3.5rem);
  min-height: 100vh;
}

.auth-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.auth-wordmark {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--color-ink);
  transition: color 200ms ease;
}

.auth-wordmark:hover { color: var(--color-accent); }

.auth-topbar-link {
  font-size: 0.92rem;
  color: var(--ink-70);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 200ms ease;
}

.auth-topbar-link:hover { color: var(--color-accent); }

.auth-card {
  margin: auto 0;
  padding: clamp(2rem, 4vw, 3rem) 0;
  max-width: 26rem;
  width: 100%;
}

.auth-card-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-55);
  margin-bottom: 1rem;
}

.auth-card-title {
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 3vw, 2.4rem);
  line-height: 1.1;
  letter-spacing: -0.018em;
  color: var(--color-ink);
}

.auth-card-title em { font-style: italic; color: var(--color-accent); }

.auth-card-sub {
  margin-top: 0.8rem;
  font-size: 1rem;
  color: var(--ink-70);
  line-height: 1.6;
  max-width: 34ch;
}

/* ----------------------------------------------------------------
   Form
---------------------------------------------------------------- */
.auth-form {
  margin-top: 2.2rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.auth-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.auth-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-55);
}

.auth-input {
  appearance: none;
  width: 100%;
  background: transparent;
  border: 1px solid var(--ink-18);
  border-bottom-width: 1px;
  border-radius: var(--radius-input);
  padding: 0.85rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-ink);
  transition: border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.auth-input::placeholder { color: var(--ink-40); }

.auth-input:hover { border-color: var(--ink-40); }

.auth-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(140, 94, 69, 0.12);
}

.auth-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: -0.2rem;
}

.auth-check {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.9rem;
  color: var(--ink-70);
  cursor: pointer;
  user-select: none;
}

.auth-check input {
  width: 16px; height: 16px;
  accent-color: var(--color-accent);
}

.auth-link {
  font-size: 0.9rem;
  color: var(--color-accent);
  border-bottom: 1px solid transparent;
  transition: border-color 180ms ease;
}
.auth-link:hover { border-bottom-color: var(--color-accent); }

.auth-submit {
  appearance: none;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--color-ink);
  color: var(--color-bg);
  font-family: var(--font-sans);
  font-size: 0.98rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 0.95rem 1.4rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition: background 200ms ease, transform 200ms ease;
  margin-top: 0.4rem;
}

.auth-submit:hover { background: var(--color-accent); }
.auth-submit:active { transform: translateY(1px); }
.auth-submit[disabled] { opacity: 0.55; cursor: progress; }

.auth-divider {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-40);
  margin: 1.4rem 0 0.4rem;
}
.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.auth-secondary {
  appearance: none;
  border: 1px solid var(--ink-18);
  background: var(--color-bg);
  color: var(--color-ink);
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  padding: 0.85rem 1.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease;
  text-decoration: none;
}
.auth-secondary:hover { background: var(--color-surface); border-color: var(--ink-40); }
.auth-secondary i { color: var(--color-accent); }

.auth-message {
  margin-top: 1rem;
  padding: 0.8rem 0.95rem;
  border-radius: var(--radius-input);
  font-size: 0.92rem;
  line-height: 1.45;
  background: rgba(140, 94, 69, 0.08);
  border: 1px solid rgba(140, 94, 69, 0.25);
  color: var(--color-accent);
  display: none;
}
.auth-message.show { display: block; }
.auth-message.error {
  background: rgba(176, 53, 53, 0.07);
  border-color: rgba(176, 53, 53, 0.32);
  color: #9b2f2f;
}
.auth-message.success {
  background: rgba(120, 140, 93, 0.10);
  border-color: rgba(120, 140, 93, 0.32);
  color: #4f6235;
}

/* ----------------------------------------------------------------
   Guest pill — "use without an account"
---------------------------------------------------------------- */
.auth-guest {
  margin-top: 1.6rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.auth-guest-note {
  font-size: 0.88rem;
  color: var(--ink-55);
  line-height: 1.55;
  max-width: 34ch;
}

.auth-guest-link {
  font-size: 0.95rem;
  color: var(--color-ink);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--ink-40);
  align-self: flex-start;
  padding-bottom: 2px;
  transition: color 180ms ease, border-color 180ms ease;
}
.auth-guest-link:hover { color: var(--color-accent); border-bottom-color: var(--color-accent); }

.auth-foot {
  margin-top: 2.4rem;
  font-size: 0.85rem;
  color: var(--ink-55);
}
.auth-foot a { color: var(--color-accent); }
.auth-foot a:hover { text-decoration: underline; }

/* ----------------------------------------------------------------
   Welcome page bits
---------------------------------------------------------------- */
.welcome-hero {
  max-width: 44rem;
  margin: 0 auto;
  padding: clamp(4rem, 10vh, 7rem) var(--container-pad) 2.5rem;
  text-align: left;
}

.welcome-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-55);
  margin-bottom: 1.4rem;
}

.welcome-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5.5vw, 3.8rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}
.welcome-title em { font-style: italic; color: var(--color-accent); }

.welcome-lede {
  margin-top: 1.6rem;
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--ink-70);
  max-width: 34rem;
}

.welcome-grid {
  max-width: 60rem;
  margin: 0 auto;
  padding: 0 var(--container-pad) 4rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.4rem;
}

.welcome-card {
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 1.6rem 1.5rem;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  transition: border-color 200ms ease, transform 200ms ease, box-shadow 200ms ease;
}
.welcome-card:hover {
  border-color: var(--ink-40);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -22px rgba(20, 20, 19, 0.45);
}

.welcome-card-kicker {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.welcome-card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-ink);
}

.welcome-card-text {
  font-size: 0.95rem;
  color: var(--ink-70);
  line-height: 1.6;
}

.welcome-card-cta {
  margin-top: auto;
  font-size: 0.9rem;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border-bottom: 1px solid transparent;
  align-self: flex-start;
  transition: border-color 180ms ease;
}
.welcome-card:hover .welcome-card-cta { border-bottom-color: var(--color-accent); }

.welcome-actions {
  max-width: 60rem;
  margin: 0 auto 5rem;
  padding: 0 var(--container-pad);
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
}

.welcome-cta-primary {
  appearance: none;
  border: 0;
  background: var(--color-ink);
  color: var(--color-bg);
  border-radius: var(--radius-pill);
  font-size: 1rem;
  padding: 0.95rem 1.7rem;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  cursor: pointer;
  transition: background 180ms ease;
  text-decoration: none;
}
.welcome-cta-primary:hover { background: var(--color-accent); }

.welcome-cta-secondary {
  font-size: 0.95rem;
  color: var(--ink-70);
  border-bottom: 1px solid var(--ink-18);
  padding-bottom: 2px;
  transition: color 180ms ease, border-color 180ms ease;
}
.welcome-cta-secondary:hover { color: var(--color-accent); border-bottom-color: var(--color-accent); }

.welcome-foot {
  border-top: 1px solid var(--rule);
  padding: 2rem var(--container-pad);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-40);
}

/* ----------------------------------------------------------------
   Responsive
---------------------------------------------------------------- */
@media (max-width: 900px) {
  .auth-shell { grid-template-columns: 1fr; }
  .auth-aside {
    border-right: 0;
    border-bottom: 1px solid var(--rule);
    padding: 2.2rem;
  }
  .auth-aside-quote { display: none; }
  .auth-aside-foot { display: none; }
  .auth-card { margin: 1.5rem 0; }
}

@media (max-width: 540px) {
  .auth-aside-title { font-size: 1.7rem; }
  .auth-card-title  { font-size: 1.7rem; }
  .welcome-title    { font-size: 2.1rem; }
  .auth-row { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
}