/* ============================================================
   Context Experts Agencies Limited — Student Portal
   auth.css  |  Register & Login pages
   Depends on: main.css
   ============================================================ */

/* ── Auth page layout ─────────────────────────────────────── */
.auth-page {
  min-height: calc(100vh - var(--navbar-h));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-5);
  position: relative;
  z-index: 1;
}

/* decorative blobs */
.auth-page::before,
.auth-page::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
  opacity: 0.12;
  z-index: 0;
}

.auth-page::before {
  width: 500px; height: 500px;
  background: var(--color-navy-600);
  top: -120px; left: -120px;
}

.auth-page::after {
  width: 400px; height: 400px;
  background: var(--color-gold-400);
  bottom: -100px; right: -100px;
}


/* ── Auth card ────────────────────────────────────────────── */
.auth-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 500px;
  background: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: fade-up 0.45s var(--ease-out) both;
}

/* gold top stripe */
.auth-card::before {
  content: '';
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--color-navy-700) 0%, var(--color-gold-400) 60%, var(--color-gold-600) 100%);
}

.auth-card--wide { max-width: 640px; }
.auth-card--admin { max-width: 420px; }


/* ── Auth card header ─────────────────────────────────────── */
.auth-card__header {
  padding: var(--space-8) var(--space-8) var(--space-5);
  border-bottom: 1px solid var(--color-slate-100);
}

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

.auth-card__logo {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--color-gold-400), var(--color-gold-600));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  color: var(--color-navy-900);
  flex-shrink: 0;
}

.auth-card__org {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-gold-600);
}

.auth-card__heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-navy-900);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.auth-card__subheading {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-slate-400);
  font-weight: 300;
}

/* admin variant — centered header */
.auth-card--admin .auth-card__header {
  text-align: center;
}

.auth-card--admin .auth-card__logo-wrap {
  justify-content: center;
}

.auth-card__admin-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--color-navy-800), var(--color-navy-600));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin: 0 auto var(--space-4);
  box-shadow: 0 4px 16px rgba(10,22,40,0.25);
}


/* ── Form body ────────────────────────────────────────────── */
.auth-card__body {
  padding: var(--space-6) var(--space-8) var(--space-8);
}


/* ── Form grid (2-col for register) ──────────────────────── */
.form-grid {
  display: grid;
  gap: var(--space-4);
}

.form-grid--2col {
  grid-template-columns: 1fr 1fr;
}

.form-grid__span2 {
  grid-column: 1 / -1;
}


/* ── Form group ───────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--color-slate-500);
  display: flex;
  align-items: center;
  gap: 5px;
}

.form-label .required {
  color: #dc2626;
  font-size: 10px;
}

/* ── Inputs ───────────────────────────────────────────────── */
.form-input {
  width: 100%;
  background: var(--color-slate-50);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: var(--text-base);
  font-family: var(--font-body);
  color: var(--color-slate-800);
  outline: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast);
}

.form-input::placeholder {
  color: var(--color-slate-300);
}

.form-input:focus {
  background: var(--color-white);
  border-color: var(--color-navy-600);
  box-shadow: 0 0 0 3px rgba(30,64,128,0.10);
}

.form-input:focus::placeholder {
  opacity: 0;
}

.form-input--error {
  border-color: #dc2626;
  box-shadow: 0 0 0 3px rgba(220,38,38,0.10);
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-slate-400);
}

.form-error-msg {
  font-size: var(--text-xs);
  color: #dc2626;
  font-weight: 500;
}


/* ── Toggle button groups (branch & field selectors) ─────── */
.toggle-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.toggle-btn {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--color-slate-200);
  background: var(--color-white);
  color: var(--color-slate-600);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  font-weight: 500;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast);
  user-select: none;
}

.toggle-btn:hover {
  background: var(--color-slate-50);
  border-color: var(--color-slate-300);
  color: var(--color-navy-800);
}

/* Branch active state */
.toggle-btn--branch.is-active {
  background: var(--color-navy-800);
  border-color: var(--color-navy-800);
  color: var(--color-gold-400);
  box-shadow: 0 2px 8px rgba(10,22,40,0.20);
  font-weight: 600;
}

/* Field active states */
.toggle-btn--ict.is-active {
  background: rgba(37,99,235,0.10);
  border-color: var(--color-ict);
  color: var(--color-ict);
  font-weight: 600;
}

.toggle-btn--biz.is-active {
  background: rgba(124,58,237,0.10);
  border-color: var(--color-biz);
  color: var(--color-biz);
  font-weight: 600;
}

.toggle-btn--media.is-active {
  background: rgba(219,39,119,0.10);
  border-color: var(--color-media);
  color: var(--color-media);
  font-weight: 600;
}


/* ── Password strength indicator ─────────────────────────── */
.password-strength {
  margin-top: var(--space-1);
}

.password-strength__bar {
  height: 4px;
  border-radius: 2px;
  background: var(--color-slate-200);
  overflow: hidden;
}

.password-strength__fill {
  height: 100%;
  border-radius: 2px;
  width: 0;
  transition: width 0.4s var(--ease-out), background 0.3s;
}

.password-strength__fill--weak   { background: #ef4444; }
.password-strength__fill--fair   { background: #f59e0b; }
.password-strength__fill--good   { background: #3b82f6; }
.password-strength__fill--strong { background: #16a34a; }

.password-strength__label {
  font-size: var(--text-xs);
  color: var(--color-slate-400);
  margin-top: 4px;
}


/* ── Form section divider ─────────────────────────────────── */
.form-section {
  border-top: 1px solid var(--color-slate-100);
  padding-top: var(--space-5);
  margin-top: var(--space-5);
}

.form-section__title {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-slate-400);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form-section__title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-slate-100);
}


/* ── Submit area ──────────────────────────────────────────── */
.auth-submit {
  margin-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.auth-submit__btn {
  width: 100%;
  padding: 13px;
  font-size: var(--text-base);
}

.auth-submit__btn .btn-spinner {
  display: none;
  width: 16px; height: 16px;
  border: 2px solid rgba(0,0,0,0.2);
  border-top-color: var(--color-navy-900);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.auth-submit__btn.is-loading .btn-spinner { display: block; }
.auth-submit__btn.is-loading .btn-text   { display: none; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

.auth-footer-link {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-slate-400);
}

.auth-footer-link a {
  color: var(--color-navy-700);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}

.auth-footer-link a:hover { color: var(--color-navy-600); }


/* ── Demo hint (dev only) ─────────────────────────────────── */
.auth-demo-hint {
  background: var(--color-gold-light);
  border: 1px solid rgba(244,196,48,0.40);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-slate-600);
  margin-top: var(--space-4);
  text-align: center;
}

.auth-demo-hint strong { color: var(--color-navy-800); }


/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 560px) {
  .auth-card__header,
  .auth-card__body {
    padding-left: var(--space-5);
    padding-right: var(--space-5);
  }

  .form-grid--2col { grid-template-columns: 1fr; }

  .auth-card { border-radius: var(--radius-lg); }
}

@media (max-width: 400px) {
  .auth-card__header,
  .auth-card__body {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .toggle-btn { font-size: var(--text-xs); padding: 7px 12px; }
}