/* ============================================================
   AUTH PAGES (Login)
   ============================================================ */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  position: relative;
  overflow: hidden;
}

/* Animated background elements */
.auth-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.auth-bg .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: orbFloat 20s ease-in-out infinite;
}

.auth-bg .orb-1 {
  width: 400px;
  height: 400px;
  background: var(--primary-600);
  top: -10%;
  left: -5%;
  animation-delay: 0s;
}

.auth-bg .orb-2 {
  width: 300px;
  height: 300px;
  background: var(--secondary-600);
  bottom: -10%;
  right: -5%;
  animation-delay: -7s;
}

.auth-bg .orb-3 {
  width: 250px;
  height: 250px;
  background: var(--accent-violet);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -14s;
  opacity: 0.2;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -30px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(15px, 15px) scale(1.02); }
}

/* DNA helix decoration */
.dna-decoration {
  position: fixed;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 300px;
  opacity: 0.08;
  z-index: 0;
}

.dna-decoration::before,
.dna-decoration::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 20px,
    var(--primary-400) 20px,
    var(--primary-400) 22px
  );
  animation: dnaRotate 4s ease-in-out infinite;
}

.dna-decoration::after {
  animation-delay: -2s;
}

@keyframes dnaRotate {
  0%, 100% { transform: scaleX(1); }
  50% { transform: scaleX(-1); }
}

/* Auth Container */
.auth-container {
  width: 100%;
  max-width: 440px;
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.6s ease;
}

/* School Header */
.auth-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.auth-logo {
  width: 84px;
  height: 84px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
  box-shadow: 0 8px 32px rgba(13, 148, 136, 0.25), 0 0 20px rgba(59, 130, 246, 0.2);
  backdrop-filter: blur(12px);
  padding: 10px;
  animation: float 3s ease-in-out infinite;
}

.auth-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.35));
}

.auth-header h1 {
  font-size: 1.5rem;
  margin-bottom: var(--space-2);
}

.auth-header .school-name {
  font-size: 1rem;
  color: var(--primary-400);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.auth-header .teacher-name {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

/* Login Card */
.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  backdrop-filter: blur(24px);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(16, 185, 129, 0.3), transparent);
}

/* Role Switcher */
.role-switcher {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-1);
  background: var(--surface-1);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
}

.role-btn {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.role-btn:hover {
  color: var(--text-primary);
}

.role-btn.active {
  background: var(--primary-600);
  color: white;
  box-shadow: var(--shadow-md);
}

/* Login Form */
.login-form .form-group {
  margin-bottom: var(--space-5);
}

.login-form .form-input {
  padding: var(--space-4) var(--space-4) var(--space-4) 48px;
  font-size: 1rem;
}

.login-form .input-icon {
  left: 16px;
}

.password-toggle {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  padding: var(--space-1);
  transition: color var(--transition-fast);
}

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

.login-btn {
  width: 100%;
  padding: var(--space-4);
  font-size: 1rem;
  margin-top: var(--space-2);
}

.login-error {
  background: var(--danger-bg);
  color: var(--danger);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  margin-bottom: var(--space-4);
  display: none;
  align-items: center;
  gap: var(--space-2);
  animation: fadeIn 0.3s ease;
}

.login-error.show {
  display: flex;
}

/* Footer */
.auth-footer {
  text-align: center;
  margin-top: var(--space-6);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.auth-footer a {
  color: var(--primary-400);
}

/* Responsive */
@media (max-width: 480px) {
  .auth-card {
    padding: var(--space-6);
  }
  
  .auth-logo {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
  }
  
  .auth-header h1 {
    font-size: 1.25rem;
  }
  
  .dna-decoration {
    display: none;
  }
}