/* ============================================
   WR Studio — Auth Page Styles
   ============================================ */

/* ---------- Auth Page Layout ---------- */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
}

/* ---------- Animated Background ---------- */
.auth-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: var(--gradient-bg);
  overflow: hidden;
}

.auth-bg::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(168, 85, 247, 0.08) 0%, transparent 50%);
  animation: bgPulse 15s ease-in-out infinite alternate;
}

.auth-bg::after {
  content: '';
  position: absolute;
  top: 10%;
  right: 10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
  animation: float 8s ease-in-out infinite;
}

/* Floating orbs */
.auth-bg .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}

.auth-bg .orb-1 {
  width: 350px;
  height: 350px;
  background: rgba(124, 58, 237, 0.2);
  top: 10%;
  left: 15%;
  animation: float 12s ease-in-out infinite;
}

.auth-bg .orb-2 {
  width: 250px;
  height: 250px;
  background: rgba(6, 182, 212, 0.15);
  bottom: 20%;
  right: 10%;
  animation: float 10s ease-in-out infinite reverse;
}

.auth-bg .orb-3 {
  width: 180px;
  height: 180px;
  background: rgba(168, 85, 247, 0.12);
  top: 60%;
  left: 50%;
  animation: float 14s ease-in-out infinite 2s;
}

/* Grid overlay */
.auth-bg .grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

@keyframes bgPulse {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(-2%, -1%) rotate(1deg); }
}

/* ---------- Auth Container ---------- */
.auth-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 460px;
  animation: fadeInUp 0.6s var(--transition-base) forwards;
}

/* ---------- Auth Logo ---------- */
.auth-logo {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.auth-logo-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: var(--shadow-glow-primary);
  animation: float 6s ease-in-out infinite;
}

.auth-logo h1 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-xs);
}

.auth-logo p {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  font-weight: 400;
}

/* ---------- Auth Card ---------- */
.auth-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: 
    var(--shadow-lg),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(124, 58, 237, 0.4), rgba(6, 182, 212, 0.4), transparent);
}

/* ---------- Tab Switcher ---------- */
.auth-tabs {
  display: flex;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: var(--space-xl);
  position: relative;
}

.auth-tab {
  flex: 1;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  z-index: 1;
}

.auth-tab:hover {
  color: var(--text-secondary);
}

.auth-tab.active {
  color: var(--text-primary);
}

.auth-tab-indicator {
  position: absolute;
  top: 4px;
  left: 4px;
  width: calc(50% - 4px);
  height: calc(100% - 8px);
  background: rgba(124, 58, 237, 0.2);
  border: 1px solid rgba(124, 58, 237, 0.3);
  border-radius: var(--radius-sm);
  transition: transform var(--transition-spring);
}

.auth-tab-indicator.signup {
  transform: translateX(100%);
}

/* ---------- Auth Form ---------- */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.auth-form.hidden-form {
  display: none;
}

/* ---------- Form Group ---------- */
.form-group {
  position: relative;
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.02em;
}

.form-input-wrapper {
  position: relative;
}

.form-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: var(--font-size-lg);
  transition: color var(--transition-base);
  pointer-events: none;
}

.form-input {
  width: 100%;
  padding: 0.9rem 1.25rem 0.9rem 2.8rem;
  background: var(--surface-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

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

.form-input:focus {
  background: var(--surface-input-focus);
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.12);
}

.form-input:focus + .form-icon,
.form-input:focus ~ .form-icon {
  color: var(--color-primary-light);
}

.form-input.input-error {
  border-color: var(--border-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Password toggle */
.password-toggle {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  cursor: pointer;
  font-size: var(--font-size-lg);
  transition: color var(--transition-base);
  background: none;
  border: none;
  padding: 4px;
}

.password-toggle:hover {
  color: var(--text-secondary);
}

/* ---------- Error Message ---------- */
.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  margin-top: var(--space-xs);
  display: flex;
  align-items: center;
  gap: 4px;
  animation: fadeInUp 0.2s ease forwards;
  min-height: 0;
  overflow: hidden;
}

.form-error.hidden {
  display: none;
}

/* ---------- Password Strength ---------- */
.password-strength {
  margin-top: var(--space-sm);
}

.strength-bars {
  display: flex;
  gap: 4px;
  margin-bottom: 4px;
}

.strength-bar {
  flex: 1;
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.strength-bar.active.weak { background: var(--color-error); }
.strength-bar.active.fair { background: var(--color-warning); }
.strength-bar.active.good { background: #a3e635; }
.strength-bar.active.strong { background: var(--color-success); }

.strength-text {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  transition: color var(--transition-base);
}

/* ---------- Submit Button ---------- */
.auth-submit {
  width: 100%;
  padding: 1rem;
  margin-top: var(--space-sm);
  font-size: var(--font-size-base);
  font-weight: 600;
  letter-spacing: 0.02em;
  position: relative;
}

.auth-submit .btn-text {
  transition: opacity var(--transition-fast);
}

.auth-submit .btn-spinner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.auth-submit.loading .btn-text {
  opacity: 0;
}

.auth-submit.loading .btn-spinner {
  opacity: 1;
}

/* ---------- Auth Footer ---------- */
.auth-footer {
  text-align: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
}

.auth-footer p {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.auth-footer a,
.auth-footer button.link {
  color: var(--color-primary-light);
  font-weight: 600;
  cursor: pointer;
  transition: color var(--transition-fast);
  background: none;
  border: none;
  font-size: var(--font-size-sm);
  font-family: inherit;
  padding: 0;
}

.auth-footer a:hover,
.auth-footer button.link:hover {
  color: var(--color-accent-light);
}

/* ---------- Auth Terms ---------- */
.auth-terms {
  text-align: center;
  margin-top: var(--space-2xl);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  line-height: 1.6;
}

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

.auth-terms a:hover {
  color: var(--color-primary-light);
}

/* ---------- Responsive ---------- */
@media (max-width: 520px) {
  .auth-page {
    padding: var(--space-md);
    align-items: flex-start;
    padding-top: 10vh;
  }

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

  .auth-logo h1 {
    font-size: var(--font-size-2xl);
  }

  .auth-logo-icon {
    width: 52px;
    height: 52px;
    font-size: 22px;
  }
}

@media (max-width: 360px) {
  .auth-card {
    padding: var(--space-lg);
  }
}