/* Apple-Inspired Design System for WattSwap */

/* Custom Properties */
:root {
  --energy-green: #30d158;
  --energy-blue: #007aff;
  --energy-purple: #af52de;
  --energy-orange: #ff9500;
  --system-gray: #f2f2f7;
  --system-gray2: #e5e5ea;
  --system-gray3: #d1d1d6;
  --system-gray4: #c7c7cc;
  --system-gray5: #aeaeb2;
  --system-gray6: #8e8e93;
  --label-primary: #000000;
  --label-secondary: #3c3c43;
  --label-tertiary: #3c3c4399;
  --fill-primary: #78788033;
  --fill-secondary: #78788028;
  --fill-tertiary: #7676801e;
  --separator: #3c3c4349;
  --blur-radius: 20px;
  --border-radius-small: 8px;
  --border-radius-medium: 12px;
  --border-radius-large: 16px;
  --border-radius-xlarge: 24px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-medium: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.15);
}

/* Typography Scale */
.text-display {
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.025em;
}

.text-title-1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.text-title-2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.text-title-3 {
  font-size: clamp(1.25rem, 3vw, 2rem);
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.text-headline {
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  line-height: 1.3;
  font-weight: 600;
}

.text-body {
  font-size: clamp(0.875rem, 2vw, 1.125rem);
  line-height: 1.5;
  font-weight: 400;
}

.text-caption {
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  line-height: 1.4;
  font-weight: 400;
}

/* Glass Morphism Effects */
.glass-light {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(var(--blur-radius));
  -webkit-backdrop-filter: blur(var(--blur-radius));
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.glass-dark {
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(var(--blur-radius));
  -webkit-backdrop-filter: blur(var(--blur-radius));
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.glass-primary {
  background: rgba(0, 122, 255, 0.1);
  backdrop-filter: blur(var(--blur-radius));
  -webkit-backdrop-filter: blur(var(--blur-radius));
  border: 1px solid rgba(0, 122, 255, 0.2);
}

/* Advanced Button Styles */
.btn-primary {
  background: linear-gradient(135deg, var(--energy-blue), #0056b3);
  color: white;
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-medium);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  background: linear-gradient(135deg, #0056b3, var(--energy-blue));
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.9);
  color: var(--label-primary);
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 600;
  border: 1px solid var(--system-gray3);
  cursor: pointer;
  transition: all var(--transition-medium);
  backdrop-filter: blur(var(--blur-radius));
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: rgba(255, 255, 255, 1);
}

.btn-ghost {
  background: transparent;
  color: var(--energy-blue);
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 600;
  border: 2px solid var(--energy-blue);
  cursor: pointer;
  transition: all var(--transition-medium);
}

.btn-ghost:hover {
  background: var(--energy-blue);
  color: white;
  transform: translateY(-2px);
}

/* Card Components */
.card-minimal {
  background: white;
  border-radius: var(--border-radius-xlarge);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--system-gray2);
  transition: all var(--transition-medium);
}

.card-minimal:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
}

.card-feature {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.7));
  backdrop-filter: blur(var(--blur-radius));
  border-radius: var(--border-radius-xlarge);
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: all var(--transition-medium);
}

.card-feature:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: var(--shadow-2xl);
}

/* Energy Gradient Animations */
@keyframes energy-flow {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.gradient-energy {
  background: linear-gradient(-45deg, var(--energy-green), var(--energy-blue), var(--energy-purple), var(--energy-orange));
  background-size: 400% 400%;
  animation: energy-flow 8s ease infinite;
}

.gradient-text-energy {
  background: linear-gradient(135deg, var(--energy-green), var(--energy-blue), var(--energy-purple));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: energy-flow 6s ease infinite;
}

/* Micro Interactions */
@keyframes float-gentle {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse-soft {
  0%, 100% {
    opacity: 0.8;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
}

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

.animate-float-gentle {
  animation: float-gentle 6s ease-in-out infinite;
}

.animate-pulse-soft {
  animation: pulse-soft 3s ease-in-out infinite;
}

.animate-slide-up {
  animation: slide-up 0.8s ease-out forwards;
}

/* Scroll Triggered Animations */
.fade-in-up {
  opacity: 0;
  transform: translateY(50px);
  transition: all var(--transition-slow);
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all var(--transition-slow);
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all var(--transition-slow);
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.8);
  transition: all var(--transition-slow);
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* Status Indicators */
.status-online {
  position: relative;
}

.status-online::before {
  content: '';
  position: absolute;
  top: -2px;
  right: -2px;
  width: 8px;
  height: 8px;
  background: var(--energy-green);
  border-radius: 50%;
  border: 2px solid white;
  animation: pulse-soft 2s ease-in-out infinite;
}

/* Progress Indicators */
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--system-gray);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--energy-green), var(--energy-blue));
  border-radius: 2px;
  transition: width var(--transition-medium);
}

/* Responsive Utilities */
@media (max-width: 768px) {
  .mobile-stack {
    flex-direction: column;
  }
  
  .mobile-center {
    text-align: center;
  }
  
  .mobile-full {
    width: 100%;
  }
  
  .section-padding-mobile {
    padding: var(--spacing-3xl) 0;
  }
}

@media (max-width: 480px) {
  .mobile-sm-stack {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .mobile-sm-text-sm {
    font-size: 0.875rem;
  }
}

/* Focus and Accessibility */
*:focus {
  outline: 2px solid var(--energy-blue);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .glass-light,
  .glass-dark,
  .glass-primary {
    backdrop-filter: none;
    background: white;
    border: 2px solid var(--label-primary);
  }
}

/* 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;
  }
}

/* Dark mode support (future-ready) */
@media (prefers-color-scheme: dark) {
  :root {
    --label-primary: #ffffff;
    --label-secondary: #ebebf5;
    --label-tertiary: #ebebf599;
    --system-gray: #1c1c1e;
    --system-gray2: #2c2c2e;
    --system-gray3: #3a3a3c;
    --system-gray4: #48484a;
    --system-gray5: #636366;
    --system-gray6: #8e8e93;
  }
}