/* ─────────────────────────────────────────────
   100dayslearning — sign in page styles
   Inherits color/font tokens from themes.css
   ───────────────────────────────────────────── */

.auth-page {
  min-height: 100vh;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  position: relative;
  /* subtle paper-grain so the centered card doesn't feel afloat */
  background-image:
    radial-gradient(1200px 600px at 50% -10%, color-mix(in oklab, var(--accent) 6%, transparent), transparent 60%);
}
body[data-theme="terminal"] .auth-page {
  background-image: none;
}

.auth-home {
  position: absolute;
  top: 28px; left: var(--gutter);
  font-family: var(--font-ui);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}
body[data-theme="sketch"] .auth-home {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: 0;
}

.auth-shell {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 110px 24px 56px;
  gap: 24px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
  padding: 40px 36px 32px;
  box-shadow: 0 24px 60px -36px color-mix(in oklab, var(--ink) 40%, transparent);
}
body[data-theme="terminal"] .auth-card { border-radius: 6px; }
body[data-theme="sketch"] .auth-card { transform: rotate(-0.4deg); }

.auth-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 40px);
  font-weight: var(--display-weight);
  letter-spacing: var(--display-tracking);
  line-height: 1.05;
  color: var(--ink);
  margin: 0 0 8px;
}
body[data-theme="sketch"] .auth-title { font-size: clamp(44px, 6vw, 56px); }
body[data-theme="terminal"] .auth-title { font-size: clamp(22px, 2.8vw, 28px); }
body[data-theme="terminal"] .auth-title::before { content: "$ "; color: var(--muted); }

.auth-sub {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink-2);
  margin: 0 0 24px;
}

/* OAuth */
.auth-oauth {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 22px;
}
.oauth-btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 12px 16px;
  width: 100%;
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  font-family: var(--font-ui);
  font-size: 14.5px;
  font-weight: 500;
  cursor: default;
  transition: border-color .15s ease, transform .12s ease;
}
.oauth-btn:hover { border-color: var(--ink); transform: translateY(-1px); }
body[data-theme="terminal"] .oauth-btn { border-radius: 4px; background: var(--bg-2); }
body[data-theme="sketch"] .oauth-btn { border-radius: 999px; }

/* Divider */
.auth-divider {
  display: flex; align-items: center; gap: 12px;
  margin: 4px 0 18px;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--muted);
  text-transform: lowercase;
  letter-spacing: .04em;
}
.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

/* Mode tabs */
.auth-mode {
  display: flex;
  gap: 4px;
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 3px;
  margin-bottom: 18px;
}
body[data-theme="terminal"] .auth-mode { border-radius: 4px; }
.mode-tab {
  flex: 1;
  padding: 8px 12px;
  background: transparent;
  border: 0;
  border-radius: 999px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  cursor: default;
  transition: background .15s ease, color .15s ease;
}
body[data-theme="terminal"] .mode-tab { border-radius: 3px; }
.mode-tab.on {
  background: var(--card);
  color: var(--ink);
  box-shadow: 0 1px 2px color-mix(in oklab, var(--ink) 10%, transparent);
}

/* Form */
.auth-form { display: flex; flex-direction: column; gap: 14px; }
.auth-field { display: flex; flex-direction: column; gap: 6px; }
.auth-field > span {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .04em;
  display: flex; justify-content: space-between; align-items: baseline;
}
.field-link {
  font-size: 11px; color: var(--accent); text-decoration: none;
}
.field-link:hover { text-decoration: underline; }

.auth-field input {
  font-family: var(--font-body);
  font-size: 15.5px;
  color: var(--ink);
  background: var(--bg);
  padding: 12px 14px;
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
body[data-theme="terminal"] .auth-field input {
  border-radius: 4px;
  background: var(--bg-2);
  font-family: var(--font-mono);
}
.auth-field input::placeholder { color: var(--muted); }
.auth-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 18%, transparent);
}

.auth-submit {
  margin-top: 6px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 18px;
  background: var(--accent);
  color: var(--accent-ink);
  border: 0;
  border-radius: var(--r-md);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  cursor: default;
  transition: transform .12s ease, box-shadow .12s ease, opacity .15s ease;
}
.auth-submit:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px -10px var(--ink);
}
.auth-submit:disabled { opacity: 0.6; }
.auth-submit:hover .arrow { transform: translateX(3px); }
.auth-submit .arrow { transition: transform .15s ease; }
body[data-theme="terminal"] .auth-submit { border-radius: 4px; }
body[data-theme="terminal"] .auth-submit::before { content: "$ "; opacity: .6; }
body[data-theme="sketch"] .auth-submit { border-radius: 999px; font-family: var(--font-body); }

.auth-hint {
  margin: 4px 0 0;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

/* Magic-link sent state */
.auth-sent {
  text-align: center;
  padding: 14px 4px 6px;
}
.sent-icon {
  font-size: 36px;
  color: var(--accent);
  margin-bottom: 12px;
  line-height: 1;
}
.auth-sent h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: var(--display-weight);
  color: var(--ink);
  margin: 0 0 10px;
}
.auth-sent p {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink-2);
  max-width: 32ch;
  margin: 0 auto 18px;
  line-height: 1.55;
}
.link-btn {
  background: transparent;
  border: 0;
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--accent);
  cursor: default;
  padding: 6px 10px;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.auth-foot {
  font-family: var(--font-ui);
  font-size: 13.5px;
  color: var(--ink-2);
  text-align: center;
  margin: 0;
}
.auth-foot a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
}
body[data-theme="sketch"] .auth-foot a { text-decoration-style: wavy; }

/* small viewports */
@media (max-width: 520px) {
  .auth-card { padding: 30px 24px 26px; }
  .auth-home { top: 20px; }
}