/* ==========================================================================
   GZTONGCHEN.COM - Component Styles (Header, Footer, Hero, etc.)
   ========================================================================== */

/* Header
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 14, 26, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
  height: var(--header-h);
}

.site-header.scrolled {
  background: rgba(10, 14, 26, 0.9);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.05em;
  color: var(--color-text);
  transition: var(--transition);
}

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

.brand-logo {
  height: 32px;
  width: auto;
  display: block;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-tag {
  font-size: 10px;
  color: var(--color-text-3);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 400;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-2);
  border-radius: var(--radius-full);
  transition: var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: var(--gradient-primary);
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 60%;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.menu-toggle:hover {
  background: var(--color-surface);
  border-color: var(--color-primary);
}

.menu-toggle svg {
  width: 20px;
  height: 20px;
}

/* Mobile Navigation
   ========================================================================== */
.mobile-nav {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: rgba(10, 14, 26, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transform: translateY(-100%);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
  z-index: 99;
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
}

.mobile-nav.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-list {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: var(--transition);
  border: 1px solid transparent;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-primary);
}

.mobile-nav-cta {
  margin-top: 16px;
  padding: 0 20px;
}

/* Hero Section
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 80px) 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 80%);
  animation: gridScroll 30s linear infinite;
}

@keyframes gridScroll {
  0% { transform: translate(0, 0); }
  100% { transform: translate(80px, 80px); }
}

.hero-bg-glow-1 {
  position: absolute;
  top: 20%;
  left: 10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 60%);
  filter: blur(60px);
  animation: floatSlow 8s ease-in-out infinite;
}

.hero-bg-glow-2 {
  position: absolute;
  bottom: 10%;
  right: 10%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(123, 47, 247, 0.18) 0%, transparent 60%);
  filter: blur(60px);
  animation: floatSlow 10s ease-in-out infinite reverse;
}

@keyframes floatSlow {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -30px); }
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero-orb-1 {
  top: 15%;
  right: 15%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.3) 0%, transparent 60%);
  filter: blur(40px);
  animation: floatSlow 6s ease-in-out infinite;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 32px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 12px var(--color-primary);
  animation: pulse 2s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 32px;
  color: var(--color-text);
}

.hero-title .text-gradient {
  display: inline-block;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 1.5vw, 1.35rem);
  color: var(--color-text-2);
  max-width: 720px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 80px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  max-width: 800px;
  margin: 0 auto;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}

.hero-stat {
  text-align: center;
}

.hero-stat-value {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}

.hero-stat-label {
  font-size: 12px;
  color: var(--color-text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  font-size: 11px;
  color: var(--color-text-3);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  animation: floatSlow 3s ease-in-out infinite;
}

.hero-scroll-indicator::after {
  content: '';
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
}

/* Marquee/Logo strip
   ========================================================================== */
.marquee {
  overflow: hidden;
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: rgba(13, 18, 36, 0.4);
  position: relative;
}

.marquee::before,
.marquee::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 100px;
  z-index: 2;
  pointer-events: none;
}

.marquee::before {
  left: 0;
  background: linear-gradient(to right, var(--color-bg), transparent);
}

.marquee::after {
  right: 0;
  background: linear-gradient(to left, var(--color-bg), transparent);
}

.marquee-track {
  display: flex;
  gap: 64px;
  animation: marquee 30s linear infinite;
  width: max-content;
}

.marquee-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--color-text-3);
  font-weight: 500;
  white-space: nowrap;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.marquee-item svg {
  width: 20px;
  height: 20px;
  opacity: 0.7;
}

/* Footer
   ========================================================================== */
.site-footer {
  position: relative;
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  padding: 80px 0 32px;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: var(--gradient-primary);
  opacity: 0.5;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 360px;
}

.footer-brand .brand {
  margin-bottom: 8px;
}

.footer-brand p {
  color: var(--color-text-3);
  font-size: 14px;
  line-height: 1.7;
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.footer-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-2);
  transition: var(--transition);
}

.footer-social-link svg {
  width: 18px;
  height: 18px;
}

.footer-social-link:hover {
  background: var(--gradient-primary);
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
}

.footer-col-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: 20px;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-list a {
  font-size: 14px;
  color: var(--color-text-3);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-list a:hover {
  color: var(--color-primary);
  transform: translateX(2px);
}

.footer-list a::before {
  content: '›';
  opacity: 0;
  transition: var(--transition);
}

.footer-list a:hover::before {
  opacity: 1;
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-text-3);
  margin: 0;
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-bottom-links a {
  font-size: 13px;
  color: var(--color-text-3);
  transition: var(--transition);
}

.footer-bottom-links a:hover {
  color: var(--color-primary);
}

.footer-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-3);
}

.footer-status::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 12px var(--color-success);
  animation: pulse 2s ease-in-out infinite;
}

/* Page header (sub pages)
   ========================================================================== */
.page-header {
  padding: calc(var(--header-h) + 80px) 0 80px;
  position: relative;
  text-align: center;
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.04) 0%, transparent 100%);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  pointer-events: none;
}

.page-header-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-3);
  margin-bottom: 24px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.breadcrumb a {
  color: var(--color-text-3);
  transition: var(--transition);
}

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

.breadcrumb-sep {
  color: var(--color-text-3);
  opacity: 0.5;
}

.page-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.page-subtitle {
  font-size: 18px;
  color: var(--color-text-2);
  line-height: 1.7;
  max-width: 700px;
  margin: 0 auto;
}

/* Cookie banner
   ========================================================================== */
.cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  max-width: 600px;
  margin: 0 auto;
  background: rgba(13, 18, 36, 0.95);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  box-shadow: var(--shadow-lg);
  transform: translateY(120%);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.cookie-banner.show {
  transform: translateY(0);
}

.cookie-banner-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.cookie-banner-text {
  flex: 1;
  min-width: 200px;
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.6;
}

.cookie-banner-text strong {
  color: var(--color-text);
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
}

.cookie-banner-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.cookie-banner .btn {
  padding: 10px 18px;
  font-size: 13px;
}

/* Notification/Toast
   ========================================================================== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: rgba(13, 18, 36, 0.95);
  border: 1px solid var(--color-border-2);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  box-shadow: var(--shadow-lg);
  max-width: 400px;
  transform: translateX(120%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.toast-title {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 4px;
  color: var(--color-text);
}

.toast-message {
  font-size: 13px;
  color: var(--color-text-2);
}