/**
 * global.css - 共用基礎樣式
 */

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: #000000;
  color: #FFFFFF;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Page System */
.page {
  display: none;
}

.page.active {
  display: flex;
  justify-content: center;
  align-items: center;
  flex: 1;
}

/* Site Footer */
.site-footer {
  padding: 24px 20px;
  text-align: center;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
}

.site-footer p {
  margin: 4px 0;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.2s;
}

.site-footer a:hover {
  color: #FFFFFF;
}

.site-footer .disclaimer {
  font-size: 10px;
  color: rgba(255, 255, 255, 0.4);
}

/* Hamburger Navigation */
.hamburger-nav {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 1000;
}

.hamburger-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  cursor: pointer;
  gap: 5px;
  transition: background 0.2s ease;
}

.hamburger-btn:hover {
  background: rgba(255, 255, 255, 0.15);
}

.hamburger-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 1px;
  transition: all 0.3s ease;
}

.hamburger-btn.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger-btn.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-menu {
  position: absolute;
  top: 52px;
  right: 0;
  background: rgba(26, 26, 26, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 8px;
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
}

.nav-menu.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-menu a {
  display: block;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 14px;
  padding: 12px 16px;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.nav-menu a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

/* Fade In Animation */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }
.fade-in-delay-4 { animation-delay: 0.4s; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}