/* ============================================================
   QCrypton SSO Sign-Up Page
   ============================================================ */

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

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #0f1629;
  --bg-card: #141b2d;
  --bg-card-hover: #1a2340;
  --border: #1e2a45;
  --border-light: #2a3a5c;

  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --accent-dark: #2563eb;
  --accent-glow: rgba(59, 130, 246, 0.15);

  --cyan: #06b6d4;
  --emerald: #10b981;
  --amber: #f59e0b;
  --red: #ef4444;
  --purple: #a855f7;

  --gradient-primary: linear-gradient(135deg, #3b82f6, #06b6d4);
  --gradient-hero: linear-gradient(135deg, #3b82f6, #8b5cf6, #06b6d4);

  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.4);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

a { color: var(--accent-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--cyan); }

/* ---------- Background Effects ---------- */
.sso-bg-grid {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
  pointer-events: none;
}

.sso-glow {
  position: fixed; top: -200px; left: 50%; transform: translateX(-50%);
  width: 800px; height: 600px;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.08) 0%, rgba(139, 92, 246, 0.04) 40%, transparent 70%);
  pointer-events: none;
}

/* ---------- Container ---------- */
.sso-container {
  position: relative;
  width: 100%;
  max-width: 460px;
  padding: 40px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ---------- Logo ---------- */
.sso-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
  color: var(--text-primary);
  text-decoration: none;
}

.sso-logo-icon {
  width: 40px;
  height: 40px;
}

.sso-logo-text {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

/* ---------- Card ---------- */
.sso-card {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-lg);
}

/* ---------- Header ---------- */
.sso-header {
  text-align: center;
  margin-bottom: 28px;
}

.sso-header h1 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.sso-header p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ---------- SSO Buttons ---------- */
.sso-providers {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.sso-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 12px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.25s ease;
}

.sso-btn:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-1px);
}

.sso-btn:active {
  transform: translateY(0);
}

.sso-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ---------- Divider ---------- */
.sso-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.sso-divider::before,
.sso-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.sso-divider span {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

/* ---------- Form ---------- */
.sso-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-sans);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-group input::placeholder {
  color: var(--text-muted);
}

/* Override browser autofill white background */
.form-group input:-webkit-autofill,
.form-group input:-webkit-autofill:hover,
.form-group input:-webkit-autofill:focus,
.form-group input:-webkit-autofill:active {
  -webkit-box-shadow: 0 0 0 30px var(--bg-secondary) inset !important;
  -webkit-text-fill-color: var(--text-primary) !important;
  transition: background-color 5000s ease-in-out 0s;
}
.form-group input:autofill {
  background-color: var(--bg-secondary) !important;
  color: var(--text-primary) !important;
}

.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group input.error {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

/* ---------- Submit Button ---------- */
.btn-submit {
  width: 100%;
  padding: 12px 24px;
  background: var(--gradient-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
  margin-top: 4px;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(59, 130, 246, 0.4);
}

.btn-submit:active {
  transform: translateY(0);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ---------- Loading spinner on button ---------- */
.btn-submit.loading {
  pointer-events: none;
  opacity: 0.8;
}

.btn-submit.loading::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  margin-left: 8px;
  vertical-align: middle;
  animation: spin 0.6s linear infinite;
}

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

/* ---------- Terms ---------- */
.sso-terms {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 20px;
  line-height: 1.6;
}

.sso-terms a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-decoration-color: var(--border-light);
  text-underline-offset: 2px;
}

.sso-terms a:hover {
  color: var(--accent-light);
  text-decoration-color: var(--accent-light);
}

/* ---------- Status & Error Messages ---------- */
.sso-status {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 20px;
  text-align: center;
}

.sso-status.success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--emerald);
}

.sso-status.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--red);
}

.form-error {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--red);
}

.form-error.info {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--accent-light);
}

/* ---------- Forgot password ---------- */
.sso-forgot {
  text-align: center;
  margin-top: 16px;
  font-size: 13px;
}

.sso-forgot a {
  color: var(--text-secondary);
}

.sso-forgot a:hover {
  color: var(--accent-light);
}

/* ---------- Sign-in link ---------- */
.sso-signin {
  margin-top: 24px;
  font-size: 14px;
  color: var(--text-muted);
}

.sso-signin a {
  font-weight: 600;
}

/* ---------- Responsive ---------- */
@media (max-width: 480px) {
  .sso-container {
    padding: 24px 16px;
  }

  .sso-card {
    padding: 24px 20px;
  }

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