/* ===================================================
   WPS Office 2026 — Common Styles
   Design System: Dark-first, AI-native, Glassmorphism
   =================================================== */

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

:root {
  /* Brand Colors */
  --primary:       #FF6B35;
  --primary-dark:  #E55A25;
  --secondary:     #FF3366;
  --accent-blue:   #3B82F6;
  --accent-purple: #8B5CF6;
  --accent-cyan:   #06B6D4;
  --accent-green:  #22C55E;
  --accent-orange: #F97316;

  /* Gradient */
  --grad-primary:  linear-gradient(135deg, #FF6B35 0%, #FF3366 100%);
  --grad-blue:     linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
  --grad-hero:     linear-gradient(135deg, #0F0F1A 0%, #1A0A2E 50%, #0A1628 100%);

  /* Dark Theme Backgrounds */
  --bg-base:       #0A0A14;
  --bg-surface:    #111122;
  --bg-elevated:   #1A1A2E;
  --bg-card:       rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.08);
  --bg-glass:      rgba(255,255,255,0.06);
  --bg-glass-border: rgba(255,255,255,0.10);

  /* Text */
  --text-primary:   #F0F0FF;
  --text-secondary: #A0A0C0;
  --text-muted:     #606080;
  --text-accent:    #FF6B35;

  /* Borders */
  --border:        rgba(255,255,255,0.08);
  --border-light:  rgba(255,255,255,0.12);

  /* Shadows */
  --shadow-sm:     0 2px 8px rgba(0,0,0,0.3);
  --shadow-md:     0 8px 24px rgba(0,0,0,0.4);
  --shadow-lg:     0 20px 60px rgba(0,0,0,0.5);
  --shadow-glow:   0 0 40px rgba(255,107,53,0.2);
  --shadow-glow-blue: 0 0 40px rgba(59,130,246,0.2);

  /* 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:  6px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Transitions */
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-surface); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== CONTAINER ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0;
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(10, 10, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  height: 68px;
  gap: var(--space-xl);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex: 1;
}

.nav-link {
  padding: var(--space-xs) var(--space-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: var(--transition);
  white-space: nowrap;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.btn-ghost {
  padding: 0.5rem 1.25rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
  background: var(--bg-card);
}

.btn-primary {
  padding: 0.5rem 1.25rem;
  background: var(--grad-primary);
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: var(--transition);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: 0 4px 16px rgba(255,107,53,0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(255,107,53,0.4);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== BADGE DOT ===== */
.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px rgba(34,197,94,0.6);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 8px rgba(34,197,94,0.6); }
  50% { box-shadow: 0 0 16px rgba(34,197,94,0.9); }
}

/* ===== GRADIENT TEXT ===== */
.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== SECTION HEADER ===== */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.35rem 1rem;
  background: rgba(255,107,53,0.1);
  border: 1px solid rgba(255,107,53,0.25);
  border-radius: var(--radius-full);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== BUTTONS ===== */
.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  background: var(--grad-primary);
  color: #fff;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  transition: var(--transition);
  box-shadow: 0 8px 32px rgba(255,107,53,0.35);
  border: none;
  cursor: pointer;
}

.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(255,107,53,0.5);
}

.btn-hero-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  background: var(--bg-glass);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: var(--transition);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(10px);
  cursor: pointer;
}

.btn-hero-ghost:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-2px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.5rem;
  background: transparent;
  color: var(--primary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,107,53,0.4);
  transition: var(--transition);
  cursor: pointer;
}

.btn-outline:hover {
  background: rgba(255,107,53,0.1);
  border-color: var(--primary);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-top {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-4xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: var(--space-md);
  line-height: 1.7;
}

.footer-social {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.social-link {
  padding: 0.4rem 0.9rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.8rem;
  transition: var(--transition);
}

.social-link:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-lg);
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--text-primary);
  transform: translateX(3px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-legal {
  display: flex;
  gap: var(--space-lg);
}

.footer-legal a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-legal a:hover {
  color: var(--text-secondary);
}

/* ===== RESPONSIVE ===== */
/* ===== MOBILE NAV ===== */
.nav-links.nav-open {
  display: flex;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  flex-direction: column;
  background: rgba(10,10,20,0.97);
  backdrop-filter: blur(24px);
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border);
  gap: var(--space-xs);
  z-index: 999;
}

.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .footer-top { grid-template-columns: 1fr; gap: var(--space-2xl); }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .container { padding: 0 var(--space-lg); }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom { flex-direction: column; gap: var(--space-md); text-align: center; }
  .footer-legal { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
  .footer-links { grid-template-columns: 1fr 1fr; }
  .nav-actions .btn-ghost { display: none; }
}