/* ============================================================
   TaxCodex Auth Theme — Shared Design System
   Navy #2C3E50 primary, brown #8B7355 secondary
   Space Grotesk headings, DM Sans body
   ============================================================
   SINGLE SOURCE OF TRUTH for all auth page styling.
   DO NOT duplicate these variables/styles inline.
   Page-specific overrides go in <style> blocks on each page.
   ============================================================ */

/* ─── Design Tokens ─────────────────────────────────────── */
:root {
  --navy: #2C3E50;
  --navy-deep: #1a2a3a;
  --brown: #8B7355;
  --brown-light: #a08968;
  --charcoal: #333333;
  --white: #FFFFFF;
  --offwhite: #F5F5F0;
  --steel: #5a7a9b;
  --steel-light: #6b8db0;
  --border: #ddd8d0;
  --muted: #6b7280;
  --error: #dc2626;
  --success: #16a34a;
}

/* ─── Base Reset ────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--offwhite);
  color: var(--charcoal);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ─── Navigation ────────────────────────────────────────── */
nav {
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--white);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.03em;
  color: var(--navy);
  text-decoration: none;
}
.logo span { color: var(--brown); }
.nav-back {
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.15s;
}
.nav-back:hover { color: var(--navy); }

/* ─── Page Layout ───────────────────────────────────────── */
.page-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

/* ─── Auth Card ─────────────────────────────────────────── */
.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(44, 62, 80, 0.06);
  overflow: hidden;
}

/* ─── Card Header ───────────────────────────────────────── */
.card-header {
  padding: 2rem 2rem 0;
  text-align: center;
}
.card-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--navy);
  background: rgba(44, 62, 80, 0.06);
  border: 1px solid rgba(44, 62, 80, 0.15);
  padding: 0.35rem 0.85rem;
  border-radius: 100px;
  margin-bottom: 1.25rem;
}
.card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--navy);
  margin-bottom: 0.35rem;
}
.card-sub {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

/* ─── Form Elements ─────────────────────────────────────── */
.form-wrap {
  padding: 1.75rem 2rem 2rem;
}
.form-group {
  margin-bottom: 1.1rem;
}
label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.4rem;
}
input[type="email"],
input[type="password"],
input[type="text"],
select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  font-family: 'DM Sans', sans-serif;
  color: var(--charcoal);
  background: var(--white);
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}
input:focus, select:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(44, 62, 80, 0.08);
}
input.error-field { border-color: var(--error); }
input::placeholder { color: var(--muted); }

/* ─── Password Toggle ───────────────────────────────────── */
.pw-wrap { position: relative; }
.pw-toggle {
  position: absolute;
  right: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 0.2rem;
  font-family: 'DM Sans', sans-serif;
  transition: color 0.15s;
}
.pw-toggle:hover { color: var(--navy); }

/* ─── Forgot Link ───────────────────────────────────────── */
.forgot-link {
  font-size: 0.8rem;
  color: var(--brown);
  text-decoration: none;
  float: right;
  margin-top: -0.75rem;
  margin-bottom: 0.5rem;
  display: block;
}
.forgot-link:hover { text-decoration: underline; }

/* ─── Buttons ───────────────────────────────────────────── */
.btn-primary {
  width: 100%;
  padding: 0.8rem;
  background: var(--navy);
  color: var(--white);
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: 'DM Sans', sans-serif;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  margin-top: 0.25rem;
}
.btn-primary:hover:not(:disabled) { background: var(--navy-deep); }
.btn-primary:active:not(:disabled) { transform: scale(0.99); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-ghost {
  width: 100%;
  padding: 0.7rem;
  background: transparent;
  color: var(--muted);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: 'DM Sans', sans-serif;
  cursor: pointer;
  transition: all 0.15s;
  margin-top: 0.6rem;
}
.btn-ghost:hover { border-color: var(--navy); color: var(--navy); }

/* ─── Messages ──────────────────────────────────────────── */
.msg {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.1rem;
  display: none;
}
.msg.error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; display: block; }
.msg.success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; display: block; }

/* ─── Divider ───────────────────────────────────────────── */
.form-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1.25rem 0;
  color: var(--muted);
  font-size: 0.8rem;
}
.form-divider::before, .form-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ─── Footer Link ───────────────────────────────────────── */
.form-footer {
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 1.25rem;
}
.form-footer a {
  color: var(--navy);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
}
.form-footer a:hover { text-decoration: underline; }

/* ─── Trial Note ────────────────────────────────────────── */
.trial-note {
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.trial-note strong { color: var(--navy); }

/* ─── Alt Sign-In ───────────────────────────────────────── */
.alt-signin {
  text-align: center;
  padding: 1rem 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--muted);
}
.alt-signin a {
  color: var(--brown);
  text-decoration: none;
  font-weight: 600;
}
.alt-signin a:hover { text-decoration: underline; }

/* ─── Loading Spinner ───────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-right: 0.4rem;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 480px) {
  nav { padding: 1rem 1.25rem; }
  .auth-card { border-radius: 12px; }
  .card-title { font-size: 1.4rem; }
  .form-wrap { padding: 1.25rem 1.5rem 1.5rem; }
}