/* Premium Customer Login CSS - Production Ready */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Orbitron:wght@400;500;600;700;800;900&display=swap');

:root {
  /* Enhanced Color Palette - Customer Login Theme */
  --primary-login: #00D4FF;
  --primary-dark: #0066CC;
  --secondary-login: #FF4D00;
  --accent-cyan: #06B6D4;
  --accent-purple: #8B5CF6;
  --accent-emerald: #10B981;
  --error-crimson: #EF4444;
  --warning-amber: #F59E0B;
  
  /* Advanced Dark Theme */
  --bg-primary: #0A0B0F;
  --bg-secondary: #1A1B23;
  --bg-tertiary: #2A2B35;
  --surface-glass: rgba(0, 212, 255, 0.08);
  --surface-elevated: rgba(0, 212, 255, 0.12);
  --surface-ultra: rgba(0, 212, 255, 0.16);
  
  /* Typography Colors */
  --text-primary: #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.87);
  --text-tertiary: rgba(255, 255, 255, 0.68);
  --text-muted: rgba(255, 255, 255, 0.48);
  
  /* Premium Shadows */
  --shadow-glow: 0 0 35px rgba(0, 212, 255, 0.18);
  --shadow-intense: 0 30px 60px rgba(0, 0, 0, 0.28);
  --shadow-login: 0 25px 50px rgba(0, 212, 255, 0.22);
  
  /* Enhanced Animations */
  --transition-smooth: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 450ms cubic-bezier(0.175, 0.885, 0.32, 1.1);
  --transition-elastic: 650ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Global Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/* Sophisticated Animated Background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: 
    radial-gradient(circle at 20% 30%, var(--primary-login) 0%, transparent 45%),
    radial-gradient(circle at 80% 70%, var(--secondary-login) 0%, transparent 45%),
    radial-gradient(circle at 60% 40%, var(--accent-purple) 0%, transparent 60%),
    radial-gradient(circle at 30% 80%, var(--accent-emerald) 0%, transparent 35%);
  opacity: 0.08;
  z-index: -2;
  animation: etherealDrift 14s ease-in-out infinite;
}

@keyframes etherealDrift {
  0%, 100% { 
    opacity: 0.08; 
    transform: scale(1) rotate(0deg);
  }
  25% { 
    opacity: 0.15; 
    transform: scale(1.03) rotate(1.5deg);
  }
  50% { 
    opacity: 0.12; 
    transform: scale(0.97) rotate(-1deg);
  }
  75% { 
    opacity: 0.18; 
    transform: scale(1.01) rotate(0.8deg);
  }
}

/* Dynamic Particle System */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(3px 3px at 25px 35px, var(--primary-login), transparent),
    radial-gradient(2px 2px at 50px 75px, var(--secondary-login), transparent),
    radial-gradient(1.5px 1.5px at 100px 45px, var(--accent-cyan), transparent),
    radial-gradient(2px 2px at 140px 85px, var(--accent-purple), transparent),
    radial-gradient(1px 1px at 180px 25px, var(--accent-emerald), transparent);
  background-repeat: repeat;
  background-size: 200px 120px;
  opacity: 0.4;
  z-index: -1;
  animation: particleDance 25s linear infinite;
}

@keyframes particleDance {
  0% { transform: translateY(0px) translateX(0px) rotate(0deg); }
  100% { transform: translateY(-120px) translateX(60px) rotate(360deg); }
}

/* Premium Login Container */
.login-container {
  background: var(--surface-ultra);
  backdrop-filter: blur(35px) saturate(190%);
  border: 1px solid rgba(0, 212, 255, 0.28);
  border-radius: 28px;
  padding: 4rem;
  width: 100%;
  max-width: 520px;
  min-height: 650px;
  box-shadow: 
    var(--shadow-login),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  position: relative;
  overflow: hidden;
  animation: containerMaterialize 1.2s var(--transition-bounce);
  transform-origin: center;
}

@keyframes containerMaterialize {
  0% {
    opacity: 0;
    transform: translateY(40px) scale(0.92) rotateX(15deg);
    filter: blur(15px);
  }
  40% {
    opacity: 0.7;
    transform: translateY(-8px) scale(1.03) rotateX(-3deg);
    filter: blur(5px);
  }
  70% {
    opacity: 0.9;
    transform: translateY(2px) scale(0.99) rotateX(1deg);
    filter: blur(1px);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1) rotateX(0deg);
    filter: blur(0px);
  }
}

/* Animated Border System */
.login-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 28px;
  padding: 1px;
  background: linear-gradient(125deg, 
    var(--primary-login) 0%,
    var(--accent-cyan) 20%,
    var(--accent-purple) 40%,
    var(--secondary-login) 60%,
    var(--accent-emerald) 80%,
    var(--primary-login) 100%);
  background-size: 500% 500%;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: xor;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  animation: borderFlow 5s ease-in-out infinite;
  z-index: -1;
}

@keyframes borderFlow {
  0%, 100% { background-position: 0% 50%; }
  25% { background-position: 100% 25%; }
  50% { background-position: 50% 100%; }
  75% { background-position: 25% 0%; }
}

/* Inner Luminescence */
.login-container::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, var(--primary-login) 0%, transparent 75%);
  opacity: 0.12;
  transform: translate(-50%, -50%);
  z-index: -1;
  animation: innerRadiance 8s ease-in-out infinite alternate;
}

@keyframes innerRadiance {
  0% { 
    opacity: 0.12; 
    transform: translate(-50%, -50%) scale(0.85);
  }
  100% { 
    opacity: 0.25; 
    transform: translate(-50%, -50%) scale(1.25);
  }
}

/* Enhanced Login Header */
.login-header {
  text-align: center;
  margin-bottom: 3.5rem;
  position: relative;
}

.login-header h1 {
  font-family: 'Orbitron', monospace;
  font-size: 3.2rem;
  font-weight: 900;
  background: linear-gradient(125deg, 
    var(--primary-login) 0%,
    var(--accent-cyan) 35%,
    var(--accent-purple) 70%,
    var(--secondary-login) 100%);
  background-size: 400% 400%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  position: relative;
  animation: titlePrismatic 4s ease-in-out infinite, titleLevitate 5s ease-in-out infinite;
  letter-spacing: -0.03em;
  text-shadow: 0 0 50px rgba(0, 212, 255, 0.3);
}

@keyframes titlePrismatic {
  0%, 100% { background-position: 0% 50%; }
  25% { background-position: 100% 25%; }
  50% { background-position: 50% 100%; }
  75% { background-position: 25% 0%; }
}

@keyframes titleLevitate {
  0%, 100% { transform: translateY(0px) rotateX(0deg); }
  25% { transform: translateY(-4px) rotateX(2deg); }
  50% { transform: translateY(-2px) rotateX(-1deg); }
  75% { transform: translateY(-6px) rotateX(1deg); }
}

.login-header p {
  color: var(--text-secondary);
  font-size: 1.2rem;
  font-weight: 450;
  opacity: 0;
  animation: subtitleEmerge 1.2s ease-out 0.6s forwards;
  line-height: 1.7;
  letter-spacing: 0.2px;
}

@keyframes subtitleEmerge {
  0% { 
    opacity: 0; 
    transform: translateY(15px) scale(0.95); 
  }
  100% { 
    opacity: 0.87; 
    transform: translateY(0) scale(1); 
  }
}

/* Premium Form Groups */
.form-group {
  margin-bottom: 2.5rem;
  position: relative;
  animation: formMaterialize 0.8s ease-out forwards;
  opacity: 0;
}

.form-group:nth-child(1) { animation-delay: 0.8s; }
.form-group:nth-child(2) { animation-delay: 1.0s; }
.form-group:nth-child(3) { animation-delay: 1.2s; }

@keyframes formMaterialize {
  0% {
    opacity: 0;
    transform: translateX(-25px) rotateY(-10deg);
  }
  100% {
    opacity: 1;
    transform: translateX(0) rotateY(0deg);
  }
}

.form-group label {
  display: block;
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-weight: 650;
  font-size: 1rem;
  letter-spacing: 0.4px;
  transition: color var(--transition-smooth);
  position: relative;
}

/* Advanced Input Fields */
.form-group input {
  width: 100%;
  padding: 1.4rem 1.8rem;
  background: rgba(0, 212, 255, 0.08);
  border: 1.8px solid rgba(0, 212, 255, 0.25);
  border-radius: 18px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1.1rem;
  font-weight: 450;
  transition: all var(--transition-bounce);
  position: relative;
  backdrop-filter: blur(15px);
  letter-spacing: 0.3px;
}

.form-group input::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-login);
  background: rgba(0, 212, 255, 0.15);
  box-shadow: 
    0 0 0 4px rgba(0, 212, 255, 0.18),
    0 12px 30px rgba(0, 212, 255, 0.25);
  transform: translateY(-3px);
  color: var(--text-primary);
}

.form-group input:focus + label {
  color: var(--primary-login);
  text-shadow: 0 0 15px rgba(0, 212, 255, 0.5);
}

/* Input State Animations */
.form-group input:valid {
  border-color: var(--accent-emerald);
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.25);
}

.form-group input:invalid:not(:placeholder-shown) {
  border-color: var(--error-crimson);
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.25);
}

/* Premium Login Button */
.login-btn {
  width: 100%;
  background: linear-gradient(125deg, 
    var(--primary-login) 0%,
    var(--accent-cyan) 25%,
    var(--accent-purple) 50%,
    var(--secondary-login) 75%,
    var(--accent-emerald) 100%);
  background-size: 400% 400%;
  color: white;
  padding: 1.5rem 2.5rem;
  border: none;
  border-radius: 22px;
  font-size: 1.25rem;
  font-weight: 750;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  margin-top: 2rem;
  box-shadow: 
    0 12px 35px rgba(0, 212, 255, 0.35),
    inset 0 2px 0 rgba(255, 255, 255, 0.25);
  transition: all var(--transition-bounce);
  animation: buttonEmergence 1s ease-out 1.4s both;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  font-family: 'Orbitron', monospace;
}

@keyframes buttonEmergence {
  0% {
    opacity: 0;
    transform: translateY(25px) scale(0.85);
    filter: blur(5px);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0px);
  }
}

/* Multi-layer Shimmer Effect */
.login-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -120%;
  width: 120%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.2) 25%,
    rgba(255, 255, 255, 0.5) 50%,
    rgba(255, 255, 255, 0.2) 75%,
    transparent 100%);
  transition: left 1s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}

.login-btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.1);
  border-radius: 50%;
  z-index: 0;
}

.login-btn:hover::before {
  left: 120%;
}

.login-btn:hover::after {
  width: 300px;
  height: 300px;
}

.login-btn:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 
    0 18px 45px rgba(0, 212, 255, 0.45),
    inset 0 2px 0 rgba(255, 255, 255, 0.35);
  background-position: 100% 50%;
  animation: buttonPulsation 0.8s ease-in-out;
}

@keyframes buttonPulsation {
  0%, 100% { transform: translateY(-4px) scale(1.03); }
  50% { transform: translateY(-4px) scale(1.06); }
}

.login-btn:active {
  transform: translateY(-2px) scale(0.99);
  transition: transform 0.15s ease;
}

/* Advanced Loading State */
.login-btn.loading {
  pointer-events: none;
  opacity: 0.85;
  animation: loadingPulse 1.5s ease-in-out infinite;
}

@keyframes loadingPulse {
  0%, 100% { opacity: 0.85; }
  50% { opacity: 0.65; }
}

.login-btn.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 24px;
  height: 24px;
  margin: -12px 0 0 -12px;
  border: 3px solid transparent;
  border-top: 3px solid white;
  border-right: 3px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  animation: loadingSpin 1.2s linear infinite;
  z-index: 2;
}

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

/* Enhanced Footer */
.login-footer {
  text-align: center;
  margin-top: 3rem;
  opacity: 0;
  animation: footerMaterialize 1s ease-out 1.6s forwards;
}

@keyframes footerMaterialize {
  0% { 
    opacity: 0; 
    transform: translateY(15px); 
  }
  100% { 
    opacity: 1; 
    transform: translateY(0); 
  }
}

.login-footer p {
  color: var(--text-tertiary);
  margin-bottom: 1.2rem;
  font-size: 1rem;
  font-weight: 400;
}

.login-footer a {
  color: var(--primary-login);
  text-decoration: none;
  font-weight: 650;
  position: relative;
  transition: all var(--transition-smooth);
  padding: 0.6rem 1.2rem;
  border-radius: 10px;
  display: inline-block;
}

.login-footer a::before {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-login), var(--accent-cyan));
  transition: width 0.5s ease, left 0.5s ease;
}

.login-footer a:hover {
  color: var(--text-primary);
  background: rgba(0, 212, 255, 0.12);
  transform: translateY(-2px);
  text-shadow: 0 0 20px rgba(0, 212, 255, 0.6);
}

.login-footer a:hover::before {
  width: 100%;
  left: 0;
}

/* Premium Notification System */
.notification {
  position: fixed;
  top: 35px;
  right: 35px;
  background: var(--surface-ultra);
  backdrop-filter: blur(25px);
  color: white;
  padding: 1.4rem 2.2rem;
  border-radius: 18px;
  z-index: 1001;
  box-shadow: 
    0 25px 50px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.12);
  animation: notificationSlideIn 0.8s var(--transition-bounce);
  min-width: 320px;
  max-width: 420px;
  font-weight: 500;
}

.notification.success {
  border-color: var(--accent-emerald);
  box-shadow: 
    0 25px 50px rgba(16, 185, 129, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.notification.error {
  border-color: var(--error-crimson);
  box-shadow: 
    0 25px 50px rgba(239, 68, 68, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

@keyframes notificationSlideIn {
  0% {
    transform: translateX(120%) scale(0.85);
    opacity: 0;
    filter: blur(5px);
  }
  40% {
    transform: translateX(-15px) scale(1.05);
    opacity: 0.9;
    filter: blur(2px);
  }
  100% {
    transform: translateX(0) scale(1);
    opacity: 1;
    filter: blur(0px);
  }
}

/* Form Validation Enhancement */
.form-group .validation-icon {
  position: absolute;
  right: 20px;
  top: 60%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  opacity: 0;
  transition: all var(--transition-smooth);
  z-index: 10;
}

.form-group input:valid + .validation-icon.success {
  opacity: 1;
  color: var(--accent-emerald);
  animation: validationSuccess 0.6s ease-out;
}

.form-group input:invalid:not(:placeholder-shown) + .validation-icon.error {
  opacity: 1;
  color: var(--error-crimson);
  animation: validationError 0.6s ease-out;
}

@keyframes validationSuccess {
  0% { transform: translateY(-50%) scale(0) rotate(-180deg); }
  50% { transform: translateY(-50%) scale(1.4) rotate(-90deg); }
  100% { transform: translateY(-50%) scale(1) rotate(0deg); }
}

@keyframes validationError {
  0%, 100% { transform: translateY(-50%) translateX(0); }
  20%, 60% { transform: translateY(-50%) translateX(-4px); }
  40%, 80% { transform: translateY(-50%) translateX(4px); }
}

/* Responsive Design */
@media (max-width: 768px) {
  .login-container {
    margin: 1.5rem;
    padding: 3rem 2.5rem;
    border-radius: 24px;
    max-width: calc(100vw - 3rem);
    min-height: 600px;
  }
  
  .login-header h1 {
    font-size: 2.6rem;
  }
  
  .form-group input {
    padding: 1.2rem 1.5rem;
    font-size: 1rem;
  }
  
  .login-btn {
    padding: 1.3rem 2rem;
    font-size: 1.1rem;
  }
  
  .notification {
    top: 25px;
    right: 25px;
    left: 25px;
    max-width: calc(100vw - 50px);
  }
}

@media (max-width: 480px) {
  .login-container {
    padding: 2.5rem 2rem;
    margin: 1rem;
  }
  
  .login-header h1 {
    font-size: 2.2rem;
  }
  
  body::after {
    opacity: 0.2;
  }
  
  .form-group {
    margin-bottom: 2rem;
  }
}

/* Accessibility Enhancements */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .login-container {
    border: 3px solid var(--primary-login);
    background: var(--bg-primary);
  }
  
  .form-group input {
    border: 2px solid var(--text-secondary);
  }
  
  .form-group input:focus {
    border: 3px solid var(--primary-login);
  }
}

/* Focus Indicators */
.login-btn:focus-visible {
  outline: 3px solid var(--primary-login);
  outline-offset: 4px;
}

.form-group input:focus-visible {
  outline: 2px solid var(--primary-login);
  outline-offset: 3px;
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 11, 15, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-smooth);
}

.loading-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.loading-spinner {
  width: 70px;
  height: 70px;
  border: 4px solid rgba(0, 212, 255, 0.3);
  border-top: 4px solid var(--primary-login);
  border-right: 4px solid var(--accent-cyan);
  border-radius: 50%;
  animation: advancedSpin 1.5s linear infinite;
}

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

/* Remember Me Checkbox Enhancement */
.remember-me {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin: 1.5rem 0;
  opacity: 0;
  animation: checkboxFade 0.8s ease-out 1.3s forwards;
}

.remember-me input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--primary-login);
  cursor: pointer;
}

.remember-me label {
  color: var(--text-secondary);
  font-size: 0.95rem;
  cursor: pointer;
  margin: 0;
}

@keyframes checkboxFade {
  0% { opacity: 0; transform: translateY(10px); }
  100% { opacity: 1; transform: translateY(0); }
}