/* ============================================
   EV充电桩运营商企业官网 - 公共样式
   Design System: Cyan/Electric Theme
   ============================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=DM+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

/* --- CSS Reset --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

/* --- Custom Properties (Design Tokens) --- */
:root {
  /* Colors - Primary */
  --color-primary: #0891B2;
  --color-secondary: #22D3EE;
  --color-cta: #22C55E;
  --color-warning: #F59E0B;
  --color-error: #EF4444;

  /* Colors - Background & Surface */
  --color-bg: #ECFEFF;
  --color-bg-deep: #0C4A6E;
  --color-white: #FFFFFF;

  /* Colors - Text */
  --color-text-dark: #164E63;
  --color-text-body: #334155;
  --color-text-light: #94A3B8;
  --color-text-white: #FFFFFF;

  /* Colors - Accent */
  --color-accent-deep: #0E7490;

  /* Derived / Utility Colors */
  --color-primary-rgb: 8, 145, 178;
  --color-secondary-rgb: 34, 211, 238;
  --color-cta-rgb: 34, 197, 94;
  --color-bg-deep-rgb: 12, 74, 110;
  --color-accent-deep-rgb: 14, 116, 144;

  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-shadow: 0 8px 32px rgba(8, 145, 178, 0.12);
  --glass-blur: 16px;

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  /* Font Sizes */
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.25rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 1.875rem;
  --fs-3xl: 2.25rem;
  --fs-4xl: 3rem;
  --fs-5xl: 3.75rem;

  /* Font Weights */
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(8, 145, 178, 0.08);
  --shadow-md: 0 4px 12px rgba(8, 145, 178, 0.1);
  --shadow-lg: 0 8px 24px rgba(8, 145, 178, 0.12);
  --shadow-xl: 0 12px 40px rgba(8, 145, 178, 0.15);
  --shadow-glow: 0 0 20px rgba(34, 211, 238, 0.3);
  --shadow-glow-strong: 0 0 40px rgba(34, 211, 238, 0.5);

  /* Transitions */
  --transition-fast: 200ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-Index */
  --z-particle: 0;
  --z-base: 1;
  --z-card: 10;
  --z-sticky: 50;
  --z-navbar: 100;
  --z-overlay: 200;
  --z-modal: 300;
  --z-toast: 400;

  /* Layout */
  --navbar-height: 72px;
  --container-max: 1200px;
  --container-padding: 1.5rem;
}

/* --- Base Typography --- */
body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  color: var(--color-text-body);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text-dark);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: var(--fs-5xl); font-weight: var(--fw-bold); }
h2 { font-size: var(--fs-4xl); font-weight: var(--fw-bold); }
h3 { font-size: var(--fs-3xl); font-weight: var(--fw-semibold); }
h4 { font-size: var(--fs-2xl); font-weight: var(--fw-semibold); }
h5 { font-size: var(--fs-xl); font-weight: var(--fw-medium); }
h6 { font-size: var(--fs-lg); font-weight: var(--fw-medium); }

p {
  font-size: var(--fs-base);
  line-height: 1.75;
  color: var(--color-text-body);
}

small { font-size: var(--fs-sm); }

strong { font-weight: var(--fw-semibold); }

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(8, 145, 178, 0.05);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent-deep));
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--color-secondary), var(--color-primary));
  border: 2px solid transparent;
  background-clip: padding-box;
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) rgba(8, 145, 178, 0.05);
}

/* ============================================
   NAVBAR - Floating Glassmorphism
   ============================================ */
.navbar {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: calc(var(--container-max) + 32px);
  height: var(--navbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-xl);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--glass-shadow);
  z-index: var(--z-navbar);
  transition: var(--transition-base);
}

/* Bottom border glow effect */
.navbar::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 5%;
  width: 90%;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-secondary),
    var(--color-primary),
    var(--color-secondary),
    transparent
  );
  border-radius: var(--radius-full);
  opacity: 0.7;
  transition: opacity var(--transition-base);
}

.navbar:hover::after {
  opacity: 1;
}

/* Navbar scrolled state (add via JS) */
.navbar.scrolled {
  top: 8px;
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 8px 32px rgba(8, 145, 178, 0.18);
}

/* Logo area */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--color-accent-deep);
  cursor: pointer;
  transition: var(--transition-fast);
  flex-shrink: 0;
}

.navbar__logo:hover {
  color: var(--color-primary);
}

.navbar__logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

/* Nav links */
.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.navbar__link {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-dark);
  position: relative;
  padding: var(--space-xs) 0;
  cursor: pointer;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.navbar__link:hover,
.navbar__link.active {
  color: var(--color-primary);
}

.navbar__link:hover::after,
.navbar__link.active::after {
  width: 100%;
}

/* CTA button in navbar */
.navbar__cta {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent-deep));
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.navbar__cta:hover {
  background: linear-gradient(135deg, var(--color-accent-deep), var(--color-bg-deep));
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

/* ============================================
   MOBILE HAMBURGER MENU
   ============================================ */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  cursor: pointer;
  z-index: calc(var(--z-navbar) + 1);
}

.hamburger__line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-dark);
  border-radius: var(--radius-full);
  transition: var(--transition-base);
  transform-origin: center;
}

.hamburger.active .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--color-primary);
}

.hamburger.active .hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--color-primary);
}

/* Mobile menu overlay */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(12, 74, 110, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__content {
  position: absolute;
  top: 0;
  right: 0;
  width: 80%;
  max-width: 360px;
  height: 100%;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: calc(var(--navbar-height) + var(--space-2xl)) var(--space-xl) var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  transform: translateX(100%);
  transition: transform var(--transition-base);
}

.mobile-menu.active .mobile-menu__content {
  transform: translateX(0);
}

.mobile-menu__link {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-text-dark);
  padding: var(--space-md) 0;
  border-bottom: 1px solid rgba(8, 145, 178, 0.1);
  cursor: pointer;
  transition: var(--transition-fast);
}

.mobile-menu__link:hover,
.mobile-menu__link.active {
  color: var(--color-primary);
  padding-left: var(--space-sm);
}

/* ============================================
   FOOTER - Dark with Electric Current Animation
   ============================================ */
.footer {
  position: relative;
  background: var(--color-bg-deep);
  color: var(--color-text-white);
  padding: var(--space-4xl) 0 var(--space-xl);
  overflow: hidden;
}

/* Electric current animation at top border */
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-secondary) 15%,
    var(--color-cta) 30%,
    var(--color-secondary) 50%,
    var(--color-cta) 70%,
    var(--color-secondary) 85%,
    transparent 100%
  );
  background-size: 200% 100%;
  animation: electricCurrent 3s linear infinite;
}

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

/* Secondary glow line */
.footer::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 0;
  width: 100%;
  height: 8px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(34, 211, 238, 0.15),
    rgba(34, 197, 94, 0.1),
    rgba(34, 211, 238, 0.15),
    transparent
  );
  background-size: 200% 100%;
  animation: electricCurrent 3s linear infinite;
  filter: blur(4px);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer__brand-name {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--color-white);
}

.footer__brand-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-light);
  line-height: 1.7;
}

.footer__heading {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  transition: var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-secondary);
  transform: translateX(4px);
}

/* Social links */
.footer__social {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  transition: var(--transition-fast);
  font-size: var(--fs-md);
}

.footer__social-link:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(8, 145, 178, 0.4);
}

/* Footer bottom bar */
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   BUTTONS - Charging Pulse Animation
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  border: none;
  outline: none;
}

/* Primary button */
.btn--primary {
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent-deep));
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-accent-deep), var(--color-bg-deep));
  box-shadow: 0 0 20px rgba(8, 145, 178, 0.4), 0 0 60px rgba(34, 211, 238, 0.15);
  transform: translateY(-2px);
}

/* Charging pulse animation on hover */
.btn--primary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(34, 211, 238, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn--primary:hover::before {
  width: 300px;
  height: 300px;
}

/* Charging pulse ring */
.btn--primary::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-cta)) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  animation: none;
}

.btn--primary:hover::after {
  opacity: 1;
  animation: chargingPulse 1.5s ease-in-out infinite;
}

@keyframes chargingPulse {
  0%, 100% {
    opacity: 0.4;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.02);
  }
}

/* Secondary button */
.btn--secondary {
  color: var(--color-primary);
  background: transparent;
  border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
  color: var(--color-white);
  background: var(--color-primary);
  box-shadow: 0 0 20px rgba(8, 145, 178, 0.3);
  transform: translateY(-2px);
}

/* CTA / Success button */
.btn--cta {
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-cta), #16A34A);
}

.btn--cta:hover {
  background: linear-gradient(135deg, #16A34A, #15803D);
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.4), 0 0 60px rgba(34, 197, 94, 0.15);
  transform: translateY(-2px);
}

/* Ghost button */
.btn--ghost {
  color: var(--color-text-dark);
  background: transparent;
  border: 1px solid rgba(8, 145, 178, 0.2);
}

.btn--ghost:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: rgba(8, 145, 178, 0.05);
}

/* Button sizes */
.btn--sm {
  padding: 0.5rem 1rem;
  font-size: var(--fs-xs);
  border-radius: var(--radius-md);
}

.btn--lg {
  padding: 1rem 2.25rem;
  font-size: var(--fs-base);
  border-radius: var(--radius-xl);
}

.btn--icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-lg);
}

/* ============================================
   CARDS - Glassmorphism Effect
   ============================================ */
.card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* Card with subtle gradient top border */
.card--accent::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

/* Card with glow on hover */
.card--glow:hover {
  box-shadow: 0 8px 32px rgba(8, 145, 178, 0.2), 0 0 0 1px rgba(34, 211, 238, 0.15);
}

/* Card icon */
.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(8, 145, 178, 0.1), rgba(34, 211, 238, 0.1));
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  font-size: var(--fs-xl);
}

.card__title {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-sm);
}

.card__text {
  font-size: var(--fs-sm);
  color: var(--color-text-body);
  line-height: 1.7;
}

/* ============================================
   SECTION REVEAL ANIMATIONS
   ============================================ */
.reveal,
.reveal--fade-up,
.reveal.fade-up,
.reveal--slide-left,
.reveal.slide-in-left,
.reveal--slide-right,
.reveal.slide-in-right,
.reveal--scale,
.reveal.scale-in {
  opacity: 1;
  transform: none;
}

/* 可选：保留进入动画，但只在已经可见时执行 */
.reveal--fade-up.revealed,
.reveal.fade-up.revealed {
  animation: fadeUpIn 0.7s ease-out both;
}

.reveal--slide-left.revealed,
.reveal.slide-in-left.revealed {
  animation: slideLeftIn 0.7s ease-out both;
}

.reveal--slide-right.revealed,
.reveal.slide-in-right.revealed {
  animation: slideRightIn 0.7s ease-out both;
}

.reveal--scale.revealed,
.reveal.scale-in.revealed {
  animation: scaleIn 0.7s ease-out both;
}

@keyframes fadeUpIn {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideLeftIn {
  from { opacity: 0; transform: translateX(-60px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideRightIn {
  from { opacity: 0; transform: translateX(60px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

/* Stagger children delay */
.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }
.reveal-delay-5 { transition-delay: 500ms; }

/* ============================================
   PARTICLE CANVAS CONTAINER
   ============================================ */
.particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-particle);
  pointer-events: none;
  overflow: hidden;
}

.particle-canvas canvas {
  width: 100%;
  height: 100%;
}

/* ============================================
   UTILITY: Glow Text
   ============================================ */
.glow-text {
  color: var(--color-secondary);
  text-shadow:
    0 0 7px rgba(34, 211, 238, 0.6),
    0 0 20px rgba(34, 211, 238, 0.3),
    0 0 40px rgba(34, 211, 238, 0.15);
}

.glow-text--primary {
  color: var(--color-primary);
  text-shadow:
    0 0 7px rgba(8, 145, 178, 0.6),
    0 0 20px rgba(8, 145, 178, 0.3),
    0 0 40px rgba(8, 145, 178, 0.15);
}

.glow-text--cta {
  color: var(--color-cta);
  text-shadow:
    0 0 7px rgba(34, 197, 94, 0.6),
    0 0 20px rgba(34, 197, 94, 0.3),
    0 0 40px rgba(34, 197, 94, 0.15);
}

/* ============================================
   UTILITY: Electric Border (Animated Gradient)
   ============================================ */
.electric-border {
  position: relative;
  border: none;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.electric-border::before {
  content: '';
  position: absolute;
  inset: 0;
  padding: 2px;
  border-radius: inherit;
  background: linear-gradient(
    var(--electric-angle, 0deg),
    var(--color-secondary),
    var(--color-primary),
    var(--color-cta),
    var(--color-primary),
    var(--color-secondary)
  );
  background-size: 300% 300%;
  animation: electricBorderRotate 4s linear infinite;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  z-index: 1;
}

@keyframes electricBorderRotate {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ============================================
   LOADING SKELETON ANIMATION
   ============================================ */
.skeleton {
  position: relative;
  overflow: hidden;
  background: rgba(8, 145, 178, 0.06);
  border-radius: var(--radius-md);
  color: transparent !important;
}

.skeleton::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(34, 211, 238, 0.08),
    transparent
  );
  animation: skeletonShimmer 1.8s ease-in-out infinite;
}

@keyframes skeletonShimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Skeleton variants */
.skeleton--text {
  height: 1em;
  width: 100%;
  margin-bottom: 0.5em;
}

.skeleton--text-short {
  height: 1em;
  width: 60%;
  margin-bottom: 0.5em;
}

.skeleton--heading {
  height: 1.5em;
  width: 50%;
  margin-bottom: 0.75em;
}

.skeleton--circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
}

.skeleton--card {
  height: 200px;
  border-radius: var(--radius-xl);
}

.skeleton--image {
  width: 100%;
  height: 0;
  padding-bottom: 56.25%; /* 16:9 */
  border-radius: var(--radius-lg);
}

/* ============================================
   STATS COUNTER ANIMATION
   ============================================ */
.stats-counter {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-xs);
}

.stats-counter__value {
  font-family: var(--font-heading);
  font-size: var(--fs-4xl);
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  line-height: 1;
  position: relative;
}

/* Charging bolt icon before the number */
.stats-counter__value::before {
  content: '';
  position: absolute;
  left: -1.2em;
  top: 50%;
  transform: translateY(-50%);
  width: 0.5em;
  height: 0.5em;
  background: var(--color-secondary);
  border-radius: 2px;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.stats-counter:hover .stats-counter__value::before {
  opacity: 1;
}

.stats-counter__suffix {
  font-size: var(--fs-xl);
  color: var(--color-secondary);
  font-weight: var(--fw-semibold);
}

.stats-counter__label {
  font-size: var(--fs-sm);
  color: var(--color-text-body);
  font-weight: var(--fw-medium);
}

/* Counter pulse animation when counting */
.stats-counter__value.counting {
  animation: counterPulse 0.3s ease;
}

@keyframes counterPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); color: var(--color-secondary); }
  100% { transform: scale(1); }
}

/* Stats grid layout */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

/* ============================================
   SECTION COMMON STYLES
   ============================================ */
.section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section__subtitle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.section__subtitle::before,
.section__subtitle::after {
  content: '';
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-full);
}

.section__title {
  font-family: var(--font-heading);
  font-size: var(--fs-4xl);
  font-weight: var(--fw-bold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-md);
  line-height: 1.15;
}

.section__desc {
  font-size: var(--fs-md);
  color: var(--color-text-body);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ============================================
   MISC UTILITIES
   ============================================ */

/* Gradient text */
.gradient-text {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Visually hidden */
.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;
}

/* Truncate text */
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Divider with gradient */
.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(8, 145, 178, 0.2), transparent);
  border: none;
  margin: var(--space-xl) 0;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  padding: 0.25em 0.75em;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge--primary {
  color: var(--color-primary);
  background: rgba(8, 145, 178, 0.1);
}

.badge--cta {
  color: var(--color-cta);
  background: rgba(34, 197, 94, 0.1);
}

.badge--warning {
  color: var(--color-warning);
  background: rgba(245, 158, 11, 0.1);
}

.badge--error {
  color: var(--color-error);
  background: rgba(239, 68, 68, 0.1);
}

/* ============================================
   RESPONSIVE - Tablet (max-width: 1024px)
   ============================================ */
@media (max-width: 1024px) {
  :root {
    --fs-5xl: 2.75rem;
    --fs-4xl: 2.25rem;
    --fs-3xl: 1.75rem;
    --navbar-height: 64px;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .navbar__links {
    gap: var(--space-md);
  }

  .section {
    padding: var(--space-3xl) 0;
  }
}

/* ============================================
   RESPONSIVE - Mobile (max-width: 768px)
   ============================================ */
@media (max-width: 768px) {
  :root {
    --fs-5xl: 2.25rem;
    --fs-4xl: 1.875rem;
    --fs-3xl: 1.5rem;
    --fs-2xl: 1.25rem;
    --container-padding: 1rem;
    --navbar-height: 60px;
  }

  /* Navbar: show hamburger, hide links */
  .hamburger {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }

  .navbar__links {
    display: none;
  }

  .navbar__cta {
    display: none;
  }

  .navbar {
    top: 8px;
    width: calc(100% - 16px);
    padding: 0 var(--space-md);
    border-radius: var(--radius-xl);
  }

  /* Footer */
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  /* Stats */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }

  .stats-counter__value {
    font-size: var(--fs-3xl);
  }

  /* Section */
  .section {
    padding: var(--space-2xl) 0;
  }

  .section__title {
    font-size: var(--fs-3xl);
  }

  /* Buttons */
  .btn--lg {
    padding: 0.875rem 1.75rem;
    font-size: var(--fs-sm);
  }

  /* Cards */
  .card {
    padding: var(--space-lg);
  }
}

/* ============================================
   RESPONSIVE - Small Mobile (max-width: 480px)
   ============================================ */
@media (max-width: 480px) {
  :root {
    --fs-5xl: 1.875rem;
    --fs-4xl: 1.5rem;
    --fs-3xl: 1.25rem;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ============================================
   RESPONSIVE - Large Desktop (min-width: 1440px)
   ============================================ */
@media (min-width: 1440px) {
  :root {
    --container-max: 1320px;
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  .navbar,
  .hamburger,
  .mobile-menu,
  .footer__social,
  .particle-canvas {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  .card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ddd;
  }
}

/* ============================================
   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;
  }

  .reveal,
  .reveal--fade-up,
  .reveal--slide-left,
  .reveal--slide-right,
  .reveal--scale,
  .reveal.fade-up,
  .reveal.slide-in-left,
  .reveal.slide-in-right,
  .reveal.scale-in {
    opacity: 1;
    transform: none;
  }
}

/* ============================================
   FOCUS VISIBLE (Accessibility)
   ============================================ */
:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* ============================================
   SELECTION
   ============================================ */
::selection {
  background: rgba(8, 145, 178, 0.2);
  color: var(--color-text-dark);
}