/* CSS Custom Properties - Base Light Theme */
:root {
  /* Primary Colors */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #3b82f6;
  --primary-dark: #1e40af;

  /* Status Colors */
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
  --info: #06b6d4;

  /* Light Theme Base Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-overlay: rgba(0, 0, 0, 0.05);

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;

  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;

  --accent-primary: #2563eb;
  --accent-secondary: #3b82f6;

  /* Shadows */
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1),
    0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1),
    0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Radius */
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Transitions */
  --transition: all 0.2s ease;
  --transition-fast: all 0.15s ease;
  --transition-slow: all 0.3s ease;

  --transit-orange: #ff6b35;
  --transit-blue: #1e90ff;
  --transit-navy: #0f1419;
  --bg-dark: #0f1419;
  --bg-darker: #0a0e13;
  --text-white: #ffffff;
  --text-gray: #94a3b8;
  --text-light-gray: #cbd5e1;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-overlay: rgba(255, 255, 255, 0.05);

  --text-primary: #f8fafc;
  --text-secondary: #e2e8f0;
  --text-muted: #94a3b8;

  --border-color: #334155;
  --border-hover: #475569;

  --accent-primary: #3b82f6;
  --accent-secondary: #60a5fa;

  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.3), 0 1px 2px -1px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3),
    0 4px 6px -4px rgb(0 0 0 / 0.3);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.3),
    0 8px 10px -6px rgb(0 0 0 / 0.3);

  --transit-orange: #ff6b35;
  --transit-blue: #1e90ff;
  --transit-navy: #0f1419;
  --bg-dark: #0f1419;
  --bg-darker: #0a0e13;
  --text-white: #ffffff;
  --text-gray: #94a3b8;
  --text-light-gray: #cbd5e1;
}

/* Auto Theme - Uses dynamic CSS variables set by ThemeManager */
[data-theme="auto"] {
  /* These will be overridden by the ThemeManager when dynamic colors are applied */
}

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

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

/* Base Styles */
html {
  line-height: 1.15;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  overflow-y: auto;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, sans-serif;
  font-feature-settings: "cv03", "cv04", "cv11";
  background: var(--bg-secondary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-slow);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip Navigation - Hidden by default, visible on focus */
.skip-navigation {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  z-index: 10000;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-lg);
}

.skip-navigation:focus {
  top: 1rem;
}

/* Theme Toggle */
.theme-toggle {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  width: 3rem;
  height: 3rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: var(--transition);
  z-index: 100;
  backdrop-filter: blur(10px);
}

.theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-hover);
}

.theme-toggle:active {
  transform: translateY(0);
}

.theme-toggle i {
  font-size: 1.25rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.theme-toggle:hover i {
  color: var(--text-primary);
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
  color: var(--text-white);
}

.loading-overlay.fade-out {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* Animated Background */
.loading-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
  z-index: -2;
}

.bg-pattern {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0.03;
  background-image: radial-gradient(
      circle at 25% 25%,
      var(--transit-blue) 2px,
      transparent 2px
    ),
    radial-gradient(
      circle at 75% 75%,
      var(--transit-orange) 1px,
      transparent 1px
    );
  background-size: 60px 60px;
  animation: patternFloat 20s linear infinite;
}

@keyframes patternFloat {
  0% {
    transform: translateX(0) translateY(0);
  }
  100% {
    transform: translateX(-60px) translateY(-60px);
  }
}

/* Main Loading Container */
.loading-container {
  text-align: center;
  z-index: 10;
  max-width: 400px;
  padding: 2rem;
  animation: fadeInUp 1s ease-out;
}

/* TransitFlow Logo Animation */
.logo-container {
  margin-bottom: 3rem;
  position: relative;
}

.logo {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  position: relative;
}

.logo .transit {
  color: var(--text-white);
}

.logo .flow {
  background: linear-gradient(
    135deg,
    var(--transit-orange),
    var(--transit-blue)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: flowGlow 3s ease-in-out infinite;
}

@keyframes flowGlow {
  0%,
  100% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(1.3);
  }
}

.tagline {
  color: var(--text-gray);
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.5px;
}

/* Vehicle Journey Animation */
.journey-animation {
  position: relative;
  width: 280px;
  height: 80px;
  margin: 2rem auto;
}

.journey-track {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 4px;
  background: rgba(30, 144, 255, 0.15);
  border-radius: 2px;
  transform: translateY(-50%);
}

.journey-progress {
  height: 100%;
  width: 0%;
  background: linear-gradient(
    90deg,
    var(--transit-orange),
    var(--transit-blue)
  );
  border-radius: 2px;
  box-shadow: 0 0 15px rgba(30, 144, 255, 0.4);
}

@keyframes journeyProgress {
  0%,
  100% {
    width: 0%;
  }
  50% {
    width: 100%;
  }
}

.transit-vehicle {
  z-index: 1;
  position: absolute;
  top: 50%;
  left: -15px;
  width: 30px;
  height: 20px;
  background: var(--transit-orange);
  border-radius: 8px;
  transform: translateY(-50%);
  animation: vehicleJourney 3s ease-in-out infinite;
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 2px;
}

.transit-vehicle::before,
.transit-vehicle::after {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--text-white);
  border-radius: 50%;
}

@keyframes vehicleJourney {
  0% {
    left: -15px;
  }
  50% {
    left: calc(100% - 15px);
  }
  100% {
    left: -15px;
  }
}

/* Route Points */
.route-points {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 10px;
  transform: translateY(-50%);
}

.route-point {
  width: 8px;
  height: 8px;
  background: rgba(30, 144, 255, 0.3);
  border: 2px solid var(--transit-blue);
  border-radius: 50%;
  animation: pointPulse 3s ease-in-out infinite;
}

.route-point:first-child {
  background: var(--transit-orange);
  border-color: var(--transit-orange);
}

.route-point:last-child {
  background: var(--transit-blue);
  border-color: var(--transit-blue);
}

.route-point:nth-child(2) {
  animation-delay: 0.5s;
}
.route-point:nth-child(3) {
  animation-delay: 1s;
}
.route-point:nth-child(4) {
  animation-delay: 1.5s;
}

@keyframes pointPulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.6;
  }
  20% {
    transform: scale(1.4);
    opacity: 1;
  }
}

/* Loading Text */
.loading-text {
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.loading-message {
  font-size: 1.1rem;
  color: var(--text-light-gray);
  font-weight: 500;
  margin-bottom: 0.5rem;
  animation: textFade 2s ease-in-out infinite;
}

.loading-submessage {
  font-size: 0.875rem;
  color: var(--text-gray);
  font-weight: 400;
}

@keyframes textFade {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

/* Loading Dots */
.loading-dots {
  display: inline-flex;
  gap: 4px;
  margin-left: 8px;
}

.loading-dot {
  width: 4px;
  height: 4px;
  background: var(--transit-blue);
  border-radius: 50%;
  animation: dotBounce 1.4s ease-in-out infinite;
}

.loading-dot:nth-child(1) {
  animation-delay: 0s;
}
.loading-dot:nth-child(2) {
  animation-delay: 0.2s;
}
.loading-dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes dotBounce {
  0%,
  60%,
  100% {
    transform: translateY(0);
  }
  30% {
    transform: translateY(-8px);
  }
}

/* Progress Ring */
.progress-ring {
  position: absolute;
  top: -40px;
  right: -40px;
  width: 80px;
  height: 80px;
  opacity: 0.6;
}

.progress-ring-circle {
  fill: none;
  stroke: var(--transit-blue);
  stroke-width: 2;
  stroke-linecap: round;
  transform-origin: 50% 50%;
  transform: rotate(-90deg);
  animation: progressRing 4s linear infinite;
}

@keyframes progressRing {
  0% {
    stroke-dasharray: 0 251;
  }
  50% {
    stroke-dasharray: 125 251;
  }
  100% {
    stroke-dasharray: 251 251;
  }
}

/* Responsive Design */
@media (max-width: 480px) {
  .loading-container {
    padding: 1rem;
    max-width: 320px;
  }

  .logo {
    font-size: 2.5rem;
  }

  .journey-animation {
    width: 240px;
  }
}

@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(30px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Auth Page Container */
.auth-page-container {
  display: grid;
  grid-template-columns: 70% 30%;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* Branding Panel */
.branding-panel {
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.5)),
    url("https://spotless-orange-flea.myfilebase.com/ipfs/QmSjV2aDf9Dwm4UkpS1po2RoWeQG23wyeaK1uAC3DnHgSb");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 4rem 5rem;
  color: white;
  position: relative;
  overflow: hidden;
}

.branding-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(37, 99, 235, 0.1),
    rgba(29, 78, 216, 0.05)
  );
  z-index: 1;
}

.branding-panel::after {
  content: "→";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 5rem;
  color: rgba(255, 255, 255, 0.3);
  animation: floatArrow 2s ease-in-out infinite;
  z-index: 2;
}

@keyframes floatArrow {
  0%,
  100% {
    transform: translateY(-50%) translateX(0);
  }
  50% {
    transform: translateY(-50%) translateX(10px);
  }
}

.branding-logo {
  width: 120px;
  height: 120px;
  border-radius: 2rem;
  margin-bottom: 2rem;
  position: relative;
  z-index: 2;
  border: 3px solid rgba(255, 255, 255, 0.2);
  transition: var(--transition-slow);
  box-shadow: var(--shadow-xl);
}

.branding-logo:hover {
  transform: scale(1.05);
}

.branding-content {
  text-align: left;
  margin-bottom: 4rem;
  position: relative;
  z-index: 2;
  max-width: 600px;
}

.branding-title {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #ffffff, #eeeeee);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  line-height: 1.1;
}

.branding-title span {
  background: linear-gradient(135deg, var(--transit-blue), var(--transit-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.branding-subtitle {
  font-size: 1.5rem;
  opacity: 0.95;
  font-weight: 500;
  margin-bottom: 1rem;
  color: #f1f5f9;
  line-height: 1.4;
}

.branding-quote {
  position: absolute;
  top: 5rem;
  right: 5rem;
  max-width: 400px;
  text-align: left;
  font-style: italic;
  z-index: 2;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 1.5rem;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  opacity: 0.7;
}

.branding-quote blockquote {
  margin: 0;
}

.branding-quote p {
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
  font-weight: 500;
  line-height: 1.4;
  color: #f8fafc;
}

.branding-quote cite {
  font-size: 0.875rem;
  opacity: 0.8;
  font-weight: 400;
  color: #cbd5e1;
  font-style: normal;
}

/* Form Panel */
.form-panel {
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  overflow-y: auto;
  max-height: 100vh;
  position: relative;
}

.form-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, transparent, var(--primary), transparent);
  opacity: 0.3;
}

.auth-container {
  width: 100%;
  max-width: 400px;
}

.auth-card {
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
}

.auth-step {
  padding: 0;
}

.hidden {
  display: none !important;
}

.fade-in {
  animation: fadeIn 0.3s ease-out;
}

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

/* Auth Header */
.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-logo {
  width: 4rem;
  height: 4rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: white;
  box-shadow: var(--shadow);
}

.auth-logo i {
  font-size: 1.5rem;
}

.auth-title {
  font-size: 1.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.4;
}

/* Forms */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  position: relative;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-input {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: var(--transition);
  width: 100%;
  font-family: inherit;
}

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

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.form-input:disabled {
  background: var(--bg-tertiary);
  color: var(--text-muted);
  cursor: not-allowed;
}

.input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.input-group .form-input {
  padding-right: 3rem;
}

.input-icon {
  position: absolute;
  right: 0.75rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 1.25rem;
  transition: var(--transition);
  padding: 0.25rem;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.input-icon:hover {
  color: var(--text-secondary);
  background: var(--bg-overlay);
}

.form-error {
  font-size: 0.75rem;
  color: var(--error);
  margin-top: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.form-success {
  font-size: 0.75rem;
  color: var(--success);
  margin-top: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Buttons */
.btn {
  padding: 0.875rem 1.5rem;
  border: none;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  font-family: inherit;
  line-height: 1;
  position: relative;
  overflow: hidden;
}

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

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

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-overlay);
  transform: translateY(-1px);
  border-color: var(--border-hover);
}

/* Social Buttons */
.social-auth-section {
  margin: 1rem 0;
}

.social-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.btn-social {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

.btn-social:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
  border-color: var(--border-hover);
}

.btn-social i {
  font-size: 1.125rem;
}

.btn-google {
  border-color: #ea4335;
  color: #ea4335;
}

.btn-google:hover {
  background: #ea4335;
  color: white;
}

.btn-facebook {
  border-color: #1877f2;
  color: #1877f2;
}

.btn-facebook:hover {
  background: #1877f2;
  color: white;
}

.btn-github {
  border-color: var(--text-muted);
  color: var(--text-muted);
}

.btn-github:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
}

/* Progress Bar for Registration */
.progress-bar-container {
  width: 100%;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  margin-bottom: 2rem;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent-secondary));
  border-radius: 2px;
  transition: width 0.3s ease;
  width: 0%;
  position: relative;
}

.progress-bar-fill::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  animation: progressShimmer 2s ease-in-out infinite;
}

@keyframes progressShimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* 2FA Grid */
.two-factor-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.two-factor-input {
  width: 48px;
  height: 48px;
  text-align: center;
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 1.125rem;
  font-weight: 600;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: var(--transition);
  font-family: inherit;
}

.two-factor-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
  outline: none;
}

.two-factor-input:disabled {
  background: var(--bg-tertiary);
  color: var(--text-muted);
}

/* Password Strength */
.password-strength {
  margin-top: 0.5rem;
}

.strength-bar {
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 0.375rem;
}

.strength-fill {
  height: 100%;
  transition: var(--transition-slow);
  border-radius: 2px;
}

.strength-fill.weak {
  background: linear-gradient(90deg, var(--error), #dc2626);
  width: 25%;
}

.strength-fill.fair {
  background: linear-gradient(90deg, var(--warning), #d97706);
  width: 50%;
}

.strength-fill.good {
  background: linear-gradient(90deg, var(--primary), var(--primary-hover));
  width: 75%;
}

.strength-fill.strong {
  background: linear-gradient(90deg, var(--success), #16a34a);
  width: 100%;
}

.strength-text {
  font-size: 0.75rem;
  font-weight: 500;
  transition: var(--transition);
}

.strength-text.weak {
  color: var(--error);
}
.strength-text.fair {
  color: var(--warning);
}
.strength-text.good {
  color: var(--primary);
}
.strength-text.strong {
  color: var(--success);
}

/* Username Suggestions */
.username-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 10;
  max-height: 200px;
  overflow-y: auto;
  margin-top: 0.25rem;
}

.suggestions-header {
  padding: 0.75rem 1rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg-tertiary);
}

.suggestion-item {
  padding: 0.75rem 1rem;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--bg-overlay);
}

.suggestion-item:hover {
  background: var(--bg-overlay);
  color: var(--primary);
  padding-left: 1.25rem;
}

.suggestion-item:last-child {
  border-bottom: none;
}

/* Checkbox */
.magnetic-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1.5rem 0;
  cursor: pointer;
  position: relative;
}

.magnetic-checkbox {
  position: relative;
  width: 28px;
  height: 28px;
  cursor: pointer;
  flex-shrink: 0;
}

.magnetic-checkbox input[type="checkbox"] {
  opacity: 0;
  position: absolute;
  width: 100%;
  height: 100%;
  margin: 0;
  cursor: pointer;
  z-index: 3;
}

.magnetic-field {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(30, 144, 255, 0.1), transparent);
  transform: translate(-50%, -50%);
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.magnetic-core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 4px;
  background: var(--text-gray);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.magnetic-particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--transit-blue);
  border-radius: 50%;
  opacity: 0;
  transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.magnetic-particle:nth-child(1) {
  top: 2px;
  left: 50%;
  transform: translateX(-50%);
}
.magnetic-particle:nth-child(2) {
  top: 50%;
  right: 2px;
  transform: translateY(-50%);
}
.magnetic-particle:nth-child(3) {
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
}
.magnetic-particle:nth-child(4) {
  top: 50%;
  left: 2px;
  transform: translateY(-50%);
}

.magnetic-checkbox input[type="checkbox"]:checked ~ .magnetic-field {
  width: 28px;
  height: 28px;
}

.magnetic-checkbox input[type="checkbox"]:checked ~ .magnetic-core {
  width: 12px;
  height: 12px;
  background: linear-gradient(
    45deg,
    var(--transit-blue),
    var(--transit-orange)
  );
  box-shadow: 0 0 12px rgba(30, 144, 255, 0.6);
}

.magnetic-checkbox input[type="checkbox"]:checked ~ .magnetic-particle {
  opacity: 1;
}

.magnetic-checkbox
  input[type="checkbox"]:checked
  ~ .magnetic-particle:nth-child(1) {
  transform: translateX(-50%) translateY(8px);
}
.magnetic-checkbox
  input[type="checkbox"]:checked
  ~ .magnetic-particle:nth-child(2) {
  transform: translateY(-50%) translateX(-8px);
}
.magnetic-checkbox
  input[type="checkbox"]:checked
  ~ .magnetic-particle:nth-child(3) {
  transform: translateX(-50%) translateY(-8px);
}
.magnetic-checkbox
  input[type="checkbox"]:checked
  ~ .magnetic-particle:nth-child(4) {
  transform: translateY(-50%) translateX(8px);
}
.checkbox-label-extraordinary {
  font-size: 0.875rem;
  color: var(--text-secondary);
  cursor: pointer;
  line-height: 1.4;
}

/* Button Group */
.button-group {
  padding-top: 10px;
  display: flex;
  gap: 0.75rem;
}

.button-group .btn {
  flex: 1;
}

/* Auth Footer */
.auth-footer {
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.auth-footer p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.auth-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.auth-link:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* Alerts */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  border: 1px solid;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.alert-error {
  background: rgba(254, 226, 226, 0.5);
  color: #991b1b;
  border-color: #fecaca;
}

.alert-success {
  background: rgba(220, 252, 231, 0.5);
  color: #065f46;
  border-color: #bbf7d0;
}

.alert-warning {
  background: rgba(254, 243, 199, 0.5);
  color: #92400e;
  border-color: #fde68a;
}

.alert-info {
  background: rgba(219, 234, 254, 0.5);
  color: #1e40af;
  border-color: #bfdbfe;
}

[data-theme="dark"] .alert-error {
  background: rgba(127, 29, 29, 0.2);
  color: #fca5a5;
  border-color: #7f1d1d;
}

[data-theme="dark"] .alert-success {
  background: rgba(6, 95, 70, 0.2);
  color: #86efac;
  border-color: #065f46;
}

[data-theme="dark"] .alert-warning {
  background: rgba(146, 64, 14, 0.2);
  color: #fcd34d;
  border-color: #92400e;
}

[data-theme="dark"] .alert-info {
  background: rgba(30, 64, 175, 0.2);
  color: #93c5fd;
  border-color: #1e40af;
}

.form-panel:has(#register-step-5-review:not(.hidden)) {
  align-items: flex-start;
}

/* Review Details */
.review-details {
  background: var(--bg-tertiary);
  border-radius: var(--radius);
  padding: 1rem;
  margin: 1rem 0;
  font-size: 0.875rem;
  border: 1px solid var(--border-color);
}

.review-section {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.review-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.review-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.review-section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.review-edit-btn {
  background: none;
  border: none;
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius);
  transition: var(--transition);
}

.review-edit-btn:hover {
  background: var(--bg-overlay);
  color: var(--primary-hover);
}

.review-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 0.375rem 0;
  font-size: 0.875rem;
  gap: 1rem;
}

.review-item-label {
  color: var(--text-secondary);
  font-weight: 500;
  flex-shrink: 0;
}

.review-item-value {
  color: var(--text-primary);
  font-weight: 400;
  text-align: right;
  word-break: break-word;
  flex: 1;
}

.terms-agreement {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  margin: 1rem 0;
  line-height: 1.5;
}

/* Toast Container */
.toast-container {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 1000;
  max-width: 400px;
  width: 100%;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  margin-bottom: 0.75rem;
  padding: 1rem;
  border-radius: var(--radius-lg);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  transform: translateX(400px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: auto;
  backdrop-filter: blur(10px);
}

.toast.toast-show {
  transform: translateX(0);
  opacity: 1;
}

.toast-success {
  background: linear-gradient(
    135deg,
    rgba(220, 252, 231, 0.9),
    rgba(187, 247, 208, 0.8)
  );
  border-color: var(--success);
  color: #166534;
}

.toast-error {
  background: linear-gradient(
    135deg,
    rgba(254, 226, 226, 0.9),
    rgba(254, 202, 202, 0.8)
  );
  border-color: var(--error);
  color: #991b1b;
}

.toast-warning {
  background: linear-gradient(
    135deg,
    rgba(254, 243, 199, 0.9),
    rgba(253, 230, 138, 0.8)
  );
  border-color: var(--warning);
  color: #92400e;
}

.toast-info {
  background: linear-gradient(
    135deg,
    rgba(219, 234, 254, 0.9),
    rgba(191, 219, 254, 0.8)
  );
  border-color: var(--info);
  color: #1e40af;
}

[data-theme="dark"] .toast-success {
  background: linear-gradient(
    135deg,
    rgba(6, 95, 70, 0.3),
    rgba(6, 95, 70, 0.2)
  );
  color: #86efac;
}

[data-theme="dark"] .toast-error {
  background: linear-gradient(
    135deg,
    rgba(127, 29, 29, 0.3),
    rgba(127, 29, 29, 0.2)
  );
  color: #fca5a5;
}

[data-theme="dark"] .toast-warning {
  background: linear-gradient(
    135deg,
    rgba(146, 64, 14, 0.3),
    rgba(146, 64, 14, 0.2)
  );
  color: #fcd34d;
}

[data-theme="dark"] .toast-info {
  background: linear-gradient(
    135deg,
    rgba(30, 64, 175, 0.3),
    rgba(30, 64, 175, 0.2)
  );
  color: #93c5fd;
}

.toast-content {
  display: flex;
  align-items: flex-start;
  flex: 1;
  gap: 0.5rem;
}

.toast-icon {
  font-size: 1.125rem;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.toast-message {
  flex: 1;
  line-height: 1.4;
}

.toast-close {
  background: none;
  border: none;
  padding: 0.25rem;
  margin-left: 0.75rem;
  border-radius: var(--radius);
  cursor: pointer;
  color: currentColor;
  opacity: 0.7;
  transition: var(--transition);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toast-close:hover {
  background: rgba(0, 0, 0, 0.1);
  opacity: 1;
}

[data-theme="dark"] .toast-close:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Error Container */
.error-container {
  margin-bottom: 1rem;
}

.error-container:empty {
  display: none;
}

/* Loading States */
.btn-loading {
  position: relative;
  pointer-events: none;
  color: transparent !important;
}

.btn-loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin: -8px 0 0 -8px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  color: white;
}

.btn-secondary.btn-loading::after {
  border-color: rgba(0, 0, 0, 0.3);
  border-top-color: var(--text-secondary);
}

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

/* Validation States */
.form-input.success {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.05);
}

.form-input.error {
  border-color: var(--error);
  background: rgba(239, 68, 68, 0.05);
}

[data-theme="dark"] .form-input.success {
  background: rgba(16, 185, 129, 0.1);
}

[data-theme="dark"] .form-input.error {
  background: rgba(239, 68, 68, 0.1);
}

.input-icon.success {
  color: var(--success);
}

.input-icon.error {
  color: var(--error);
}

/* Register Steps */
.register-step {
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Focus visible for better accessibility */
.btn:focus-visible,
.form-input:focus-visible,
.checkbox:focus-visible,
.auth-link:focus-visible,
.theme-toggle:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000000;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  }

  [data-theme="dark"] {
    --border-color: #ffffff;
  }
}

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

  .loading-logo::before {
    animation: none;
  }

  .loading-progress-bar::after {
    animation: none;
  }
}

/* Print styles */
@media print {
  .theme-toggle,
  .loading-overlay,
  .branding-panel {
    display: none !important;
  }

  .auth-page-container {
    grid-template-columns: 1fr;
  }

  .form-panel {
    padding: 2rem 0;
  }
}

/* Responsive Design */
@media (max-width: 1200px) {
  .auth-page-container {
    grid-template-columns: 65% 35%;
  }

  .branding-panel {
    padding: 3rem 4rem;
  }

  .branding-title {
    font-size: 3.5rem;
  }

  .branding-quote {
    top: 3rem;
    right: 3rem;
    max-width: 300px;
  }
}

@media (max-width: 1024px) {
  .auth-page-container {
    grid-template-columns: 60% 40%;
  }

  .branding-panel {
    padding: 2.5rem 3rem;
  }

  .branding-title {
    font-size: 3rem;
  }

  .branding-subtitle {
    font-size: 1.25rem;
  }

  .branding-quote {
    position: relative;
    top: auto;
    right: auto;
    margin-top: 2rem;
    max-width: none;
  }
}

@media (max-width: 768px) {
  .auth-page-container {
    grid-template-columns: 1fr;
  }

  .branding-panel {
    display: none;
  }

  .form-panel {
    padding: 2rem 1rem;
    max-height: none;
    overflow-y: visible;
  }

  .form-panel::before {
    display: none;
  }

  .auth-container {
    max-width: 100%;
  }

  .two-factor-grid {
    gap: 0.5rem;
  }

  .two-factor-input {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .theme-toggle {
    top: 1rem;
    right: 1rem;
    width: 2.5rem;
    height: 2.5rem;
  }

  .theme-toggle i {
    font-size: 1rem;
  }

  .toast-container {
    left: 1rem;
    right: 1rem;
    max-width: none;
  }

  .loading-logo {
    width: 70px;
    height: 70px;
  }

  .loading-progress-container {
    width: 160px;
  }

  .auth-title {
    font-size: 1.5rem;
  }

  .button-group {
    flex-direction: column;
  }

  .button-group .btn {
    flex: none;
  }
}

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

  .auth-header {
    margin-bottom: 1.5rem;
  }

  .auth-form {
    gap: 1.25rem;
  }

  .two-factor-input {
    width: 36px;
    height: 36px;
    font-size: 0.875rem;
  }

  .toast {
    margin-bottom: 0.5rem;
    padding: 0.75rem;
  }
}

/* Scrollbar Styles */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
  transition: var(--transition);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) var(--bg-tertiary);
}

/* Custom selection colors */
::selection {
  background: var(--primary);
  color: white;
}

::-moz-selection {
  background: var(--primary);
  color: white;
}