/* ==========================================================================
   EduSpace — auth.css
   Layout shared by login.html and signup.html. Loaded by both, after
   base.css and before the page's own stylesheet, so neither page has to
   repeat this block.
   ========================================================================== */

.auth-main {
  padding-block: clamp(2rem, 1rem + 3vw, 4rem) clamp(3rem, 2rem + 4vw, 5.5rem);
  background: var(--surface);
}

.auth-section {
  padding-block: 0;
}

.auth-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(2rem, 1rem + 4vw, 4.5rem);
}

/* ---- Editorial side ---- */
.auth-side h1 {
  margin-top: var(--space-4);
  font-size: clamp(1.9rem, 1.3rem + 2.2vw, 2.9rem);
}

.auth-side > p {
  max-width: 46ch;
  margin-top: var(--space-4);
  color: var(--text-muted);
  font-size: var(--fs-lead);
}

/* ---- Form card ---- */
.auth-card {
  padding: clamp(1.5rem, 1.1rem + 1.6vw, 2.4rem);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  background: var(--white);
  box-shadow: var(--sh-md);
}

.auth-card h2 {
  margin-top: 0;
  font-size: clamp(1.5rem, 1.2rem + 1vw, 1.9rem);
}

.auth-card-sub {
  margin: 0.55rem 0 var(--space-5);
  color: var(--text-muted);
  font-size: var(--fs-small);
}

.auth-card form {
  margin-top: var(--space-5);
}

.auth-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.auth-link {
  font-family: var(--font-ui);
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--sand-deep);
  transition: border-color var(--t-fast) var(--ease);
}
.auth-link:hover {
  border-color: var(--ink);
}

.auth-switch {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  font-size: var(--fs-small);
  color: var(--text-muted);
  text-align: center;
}
.auth-switch a {
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--sand-deep);
}
.auth-switch a:hover {
  border-color: var(--ink);
}

/* ---- Shared thin progress bar ----
   Also reused by the learning sidebar. */
.auth-progress {
  height: 6px;
  margin-top: 0.6rem;
  border-radius: var(--r-pill);
  background: var(--sand);
  overflow: hidden;
}

.auth-progress-bar {
  height: 100%;
  border-radius: inherit;
  background: var(--ink);
  transition: width var(--t-slow) var(--ease);
}

.auth-progress-label {
  display: block;
  margin-top: 0.5rem;
  font-family: var(--font-ui);
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .auth-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  /* Form first on small screens — the editorial panel is supporting copy. */
  .auth-side {
    order: 2;
  }
  .auth-card {
    order: 1;
  }
}