/* Electric Slate Design System */
/* Based on design-guide.md - Professional, High Contrast, Modern */

:root {
  /* Electric Slate Color Palette */
  --bg-color: #0D1117;              /* Slate Dark - Primary background */
  --accent-color: #10B981;          /* Electric Green - CTAs, links, highlights */
  --accent-gradient: linear-gradient(135deg, #10B981, #A3FFAE); /* Green Fade gradient */
  --text-primary: #E6EDF3;          /* White Smoke - Headings and important text */
  --text-secondary: #8B949E;        /* Slate Gray - Body copy and secondary text */
  --border-color: #30363D;          /* Subtle Border - Cards and UI elements */
  
  /* Semantic Colors */
  --success-color: #10B981;
  --error-color: #F87171;
  --warning-color: #FBBF24;
  --info-color: #60A5FA;
  
  /* Glass Morphism */
  --glass-bg: rgba(13, 17, 23, 0.8);
  --glass-border: rgba(48, 54, 61, 0.8);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Typography System */
.font-satoshi {
  font-family: "Satoshi", -apple-system, BlinkMacSystemFont, sans-serif;
}

.font-inter {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Heading Styles with Satoshi */
h1, .h1 {
  font-family: "Satoshi", sans-serif;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.2;
}

h2, .h2 {
  font-family: "Satoshi", sans-serif;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}

h3, .h3 {
  font-family: "Satoshi", sans-serif;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
}

/* Body Text with Inter */
body, p, .body {
  font-family: "Inter", sans-serif;
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Electric Slate Components */

/* Auth Card - Glass Morphism */
.auth-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.02), transparent);
  transition: left 0.8s ease;
}

.auth-card:hover::before {
  left: 100%;
}

.auth-card:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 12px 40px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: "Inter", sans-serif;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.3s ease, height 0.3s ease;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* Primary Button - Electric Green */
.btn-primary {
  background: var(--accent-gradient);
  color: var(--bg-color);
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(16, 185, 129, 0.4);
}

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

/* Secondary Button */
.btn-secondary {
  background: transparent;
  color: var(--accent-color);
  border: 1px solid var(--accent-color);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--accent-color);
  color: var(--bg-color);
  transform: translateY(-1px);
  box-shadow: 0 8px 16px rgba(16, 185, 129, 0.3);
}

/* Social Button */
.btn-social {
  background: rgba(48, 54, 61, 0.3);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-social:hover:not(:disabled) {
  background: rgba(48, 54, 61, 0.5);
  transform: translateY(-1px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
  border-color: rgba(48, 54, 61, 0.8);
}

/* Input Fields */
.input-field {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(48, 54, 61, 0.3);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: "Inter", sans-serif;
  font-size: 0.875rem;
  transition: all var(--transition-base);
  position: relative;
}

.input-field::placeholder {
  color: var(--text-secondary);
}

.input-field:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
  background: rgba(48, 54, 61, 0.4);
  transform: translateY(-1px);
}

.input-field:hover:not(:focus) {
  border-color: rgba(16, 185, 129, 0.5);
  background: rgba(48, 54, 61, 0.35);
}

/* Enhanced Input with Icon */
.input-group {
  position: relative;
}

.input-group .input-field {
  padding-left: 2.5rem;
}

.input-group .input-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  transition: color var(--transition-base);
}

.input-group .input-field:focus + .input-icon {
  color: var(--accent-color);
}

/* Label */
.label {
  display: block;
  font-family: "Inter", sans-serif;
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-base);
}

/* Help Text */
.help-text {
  font-family: "Inter", sans-serif;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
  transition: color var(--transition-base);
}

/* Error Text */
.error-text {
  font-family: "Inter", sans-serif;
  font-size: 0.75rem;
  color: var(--error-color);
  margin-top: var(--spacing-xs);
  animation: errorShake 0.5s ease-in-out;
}

@keyframes errorShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* Success Text */
.success-text {
  font-family: "Inter", sans-serif;
  font-size: 0.75rem;
  color: var(--success-color);
  margin-top: var(--spacing-xs);
  animation: successPulse 0.6s ease-in-out;
}

@keyframes successPulse {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.02); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

/* Brand Logo Animation */
.brand-logo {
  width: 4rem;
  height: 4rem;
  background: var(--accent-gradient);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Satoshi", sans-serif;
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--bg-color);
  animation: floating 3s ease-in-out infinite;
  margin: 0 auto var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

.brand-logo::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(from 0deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: logoRotate 4s linear infinite;
}

@keyframes logoRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes floating {
  0%, 100% { 
    transform: translateY(0px); 
  }
  50% { 
    transform: translateY(-6px); 
  }
}

/* Brand Title */
.brand-title {
  font-family: "Satoshi", sans-serif;
  font-weight: 900;
  font-size: 2rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
  margin-bottom: var(--spacing-sm);
  animation: titleGlow 3s ease-in-out infinite;
}

@keyframes titleGlow {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.1); }
}

/* Brand Subtitle */
.brand-subtitle {
  font-family: "Inter", sans-serif;
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

/* Divider */
.divider {
  position: relative;
  margin: var(--spacing-lg) 0;
}

.divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.divider-text {
  position: relative;
  background: var(--bg-color);
  padding: 0 var(--spacing-md);
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-align: center;
}

/* Alert Components */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  animation: alertSlideIn 0.4s ease-out;
  position: relative;
  overflow: hidden;
}

@keyframes alertSlideIn {
  from {
    transform: translateY(-20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.alert::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: currentColor;
  opacity: 0.7;
}

.alert-error {
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: var(--error-color);
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--success-color);
}

.alert-warning {
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.3);
  color: var(--warning-color);
}

.alert-info {
  background: rgba(96, 165, 250, 0.1);
  border: 1px solid rgba(96, 165, 250, 0.3);
  color: var(--info-color);
}

/* Background Effects */
.electric-bg {
  position: fixed;
  inset: 0;
  background: var(--bg-color);
  z-index: -1;
}

.electric-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 20% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(163, 255, 174, 0.06) 0%, transparent 50%);
  animation: bgPulse 4s ease-in-out infinite;
}

@keyframes bgPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

/* Responsive Design */
@media (max-width: 768px) {
  .auth-card {
    margin: var(--spacing-md);
    padding: var(--spacing-xl);
  }
  
  .brand-title {
    font-size: 1.75rem;
  }
  
  .btn {
    padding: 0.875rem 1.5rem;
    font-size: 0.875rem;
  }
  
  .input-field {
    padding: 0.875rem 1rem;
    font-size: 1rem; /* Prevent zoom on iOS */
  }
  
  .brand-logo {
    width: 3.5rem;
    height: 3.5rem;
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .auth-card {
    margin: var(--spacing-sm);
    padding: var(--spacing-lg);
  }
  
  .brand-title {
    font-size: 1.5rem;
  }
  
  .btn {
    padding: 1rem 1.5rem;
  }
  
  .input-field {
    padding: 1rem;
  }
}

/* Focus States for Accessibility */
.btn:focus-visible,
.input-field:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Loading States */
.loading {
  opacity: 0.7;
  pointer-events: none;
  position: relative;
}

.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: shimmer 1.5s infinite;
}

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

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, 
    rgba(48, 54, 61, 0.3) 25%, 
    rgba(48, 54, 61, 0.5) 50%, 
    rgba(48, 54, 61, 0.3) 75%
  );
  background-size: 200% 100%;
  animation: skeletonLoading 1.5s infinite;
}

@keyframes skeletonLoading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Tooltip */
.tooltip {
  position: relative;
  cursor: help;
}

.tooltip::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(13, 17, 23, 0.95);
  color: var(--text-primary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  z-index: 1000;
}

.tooltip::after {
  content: '';
  position: absolute;
  bottom: 115%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: rgba(13, 17, 23, 0.95);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.tooltip:hover::before,
.tooltip:hover::after {
  opacity: 1;
}

/* Progress Indicator */
.progress-indicator {
  width: 100%;
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 2px;
  transition: width 0.5s ease;
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  animation: progressShine 2s ease-in-out infinite;
}

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

/* Checkbox Styling */
input[type="checkbox"] {
  appearance: none;
  width: 1rem;
  height: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: rgba(48, 54, 61, 0.3);
  position: relative;
  cursor: pointer;
  transition: all var(--transition-base);
}

input[type="checkbox"]:checked {
  background: var(--accent-gradient);
  border-color: var(--accent-color);
}

input[type="checkbox"]:checked::before {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--bg-color);
  font-size: 0.75rem;
  font-weight: bold;
}

input[type="checkbox"]:hover {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.1);
}

/* Link Styling */
.link {
  color: var(--accent-color);
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
}

.link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-color);
  transition: width var(--transition-base);
}

.link:hover {
  color: #A3FFAE;
}

.link:hover::after {
  width: 100%;
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* Dark Mode Enhancements */
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
  }
}

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

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --border-color: #60A5FA;
    --text-secondary: #E6EDF3;
  }
}

/* Print Styles */
@media print {
  .electric-bg,
  .btn,
  .alert {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
}