/* ==========================================
   AUTHENTICATION PAGES - DATACENTER THEME
   Login, Register, Forgot Password
   ========================================== */

:root {
  --navy-deep: #0a1128;
  --navy-mid: #1a1f3a;
  --navy-light: #2a3555;
  --electric-blue: #0066ff;
  --cyan-bright: #00d4ff;
  --neon-teal: #00ffcc;
  --purple-glow: #8b5cf6;
  --white: #ffffff;
  --off-white: #f8fafc;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  
  --gradient-primary: linear-gradient(135deg, var(--navy-deep) 0%, var(--electric-blue) 100%);
  --gradient-accent: linear-gradient(135deg, var(--cyan-bright) 0%, var(--purple-glow) 100%);
  
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--navy-deep);
  color: var(--off-white);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ==========================================
   AUTH CONTAINER
   ========================================== */

.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

/* Animated Background */
.auth-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--navy-deep) 0%, var(--navy-mid) 50%, var(--navy-light) 100%);
  z-index: 0;
}

.auth-bg::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 50% 50%, rgba(0, 102, 255, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
  animation: rotateGradient 20s linear infinite;
}

@keyframes rotateGradient {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Floating Particles */
.auth-particles {
  position: absolute;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 1;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--cyan-bright);
  border-radius: 50%;
  opacity: 0.3;
  animation: floatParticle 15s infinite ease-in-out;
}

.particle:nth-child(1) { left: 10%; top: 20%; animation-delay: 0s; }
.particle:nth-child(2) { left: 80%; top: 70%; animation-delay: 2s; }
.particle:nth-child(3) { left: 30%; top: 60%; animation-delay: 4s; }
.particle:nth-child(4) { left: 70%; top: 30%; animation-delay: 6s; }
.particle:nth-child(5) { left: 50%; top: 80%; animation-delay: 8s; }

@keyframes floatParticle {
  0%, 100% { transform: translateY(0) translateX(0); opacity: 0.3; }
  50% { transform: translateY(-100px) translateX(50px); opacity: 0.6; }
}

/* ==========================================
   AUTH CARD
   ========================================== */

.auth-card {
  position: relative;
  z-index: 2;
  background: rgba(26, 31, 58, 0.85);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-2xl);
  padding: 3rem;
  width: 100%;
  max-width: 480px;
  border: 1px solid rgba(0, 212, 255, 0.2);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 
              0 0 40px rgba(0, 212, 255, 0.1);
  animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-logo {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-logo-img {
  width: 60px;
  height: 60px;
  margin-bottom: 1rem;
}

.auth-logo h1 {
  font-size: clamp(1.75rem, 4vw, 2rem);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.auth-logo p {
  color: var(--gray-400);
  font-size: 1.05rem;
}

/* ==========================================
   FORM ELEMENTS
   ========================================== */

.auth-form {
  margin-top: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--off-white);
  font-weight: 600;
  font-size: 1.05rem;
}

.form-input {
  width: 100%;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--off-white);
  font-size: 1.05rem;
  transition: all var(--transition-base);
  outline: none;
}

.form-input:focus {
  border-color: var(--cyan-bright);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.1),
              0 0 20px rgba(0, 212, 255, 0.2);
  transform: translateY(-2px);
}

.form-input::placeholder {
  color: var(--gray-400);
}

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

.input-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  font-size: 1.2rem;
  pointer-events: none;
}

.input-icon-wrapper .form-input {
  padding-left: 50px;
}

.password-toggle {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  font-size: 1.2rem;
  transition: color var(--transition-base);
}

.password-toggle:hover {
  color: var(--cyan-bright);
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 1rem 0;
}

.form-checkbox input[type="checkbox"] {
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--electric-blue);
}

.form-checkbox label {
  color: var(--gray-300);
  cursor: pointer;
  font-size: 1.05rem;
}

.form-link {
  color: var(--cyan-bright);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-base);
  font-size: 1.05rem;
}

.form-link:hover {
  color: var(--neon-teal);
  text-decoration: underline;
}

/* Submit Button */
.btn-submit {
  width: 100%;
  padding: 16px;
  background: var(--gradient-accent);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-size: 1.15rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.btn-submit::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 212, 255, 0.5);
}

.btn-submit:hover::before {
  left: 100%;
}

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

/* Divider */
.auth-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 2rem 0;
  color: var(--gray-400);
  font-size: 1.05rem;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(0, 212, 255, 0.2);
}

/* Social Login */
.social-login {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.btn-social {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--off-white);
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn-social:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--cyan-bright);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.2);
}

.btn-social i {
  font-size: 1.3rem;
}

/* Footer Link */
.auth-footer {
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 212, 255, 0.1);
  color: var(--gray-400);
  font-size: 1.05rem;
}

.auth-footer a {
  color: var(--cyan-bright);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-base);
}

.auth-footer a:hover {
  color: var(--neon-teal);
}

/* Success Message */
.success-message {
  background: rgba(0, 255, 204, 0.1);
  border: 1px solid rgba(0, 255, 204, 0.3);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.5rem;
  color: var(--neon-teal);
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideDown 0.4s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.success-message i {
  font-size: 1.4rem;
}

/* Error Message */
.error-message {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.5rem;
  color: #ef4444;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: shake 0.4s ease-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

.error-message i {
  font-size: 1.4rem;
}

/* ==========================================
   MOBILE RESPONSIVE
   ========================================== */

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .auth-container {
    padding: 1.5rem;
  }
  
  .auth-card {
    padding: 2rem 1.5rem;
  }
  
  .form-label,
  .form-input,
  .form-checkbox label,
  .form-link,
  .auth-divider,
  .auth-footer {
    font-size: 1.1rem;
  }
  
  .btn-submit,
  .btn-social {
    font-size: 1.15rem;
    padding: 16px;
  }
  
  .auth-logo p {
    font-size: 1.1rem;
  }
  
  .social-login {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .auth-card {
    padding: 1.5rem 1rem;
  }
}