/* ===========================
   ALUVA 靜態登陸頁面樣式
   =========================== */

/* --- 自訂字體載入（僅 Logo 用） --- */
@font-face {
  font-family: 'Avenir Next World';
  src: url('Avenir Next World/Avenir Next World Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

/* --- 全域重設與基礎 --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* 青色 */
  --teal: #0D9488;
  --teal-light: #99F6E4;
  /* 深藍色 */
  --blue: #0D2D50;
  --blue-dark: #0B1D3A;
  /* 基礎色 */
  --white: #FFFFFF;
  --black: #000000;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow-x: hidden;
  font-family: Georgia, 'Times New Roman', serif;
  color: var(--white);
  background-color: var(--blue-dark);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- 主容器 --- */
.landing-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
}

/* --- 上方主區域（深藍色背景） --- */
.main-section {
  flex: 1;
  background-color: var(--blue-dark);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 60px 80px;
  overflow: hidden;
}

/* --- 頂部 Logo 列 --- */
.header {
  position: absolute;
  top: 30px;
  right: 40px;
  z-index: 10;
}

/* ALUVA Logo 文字（加寬字距） */
.logo {
  font-family: 'Avenir Next World', 'Avenir Next', sans-serif;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.4em;
  color: var(--white);
  text-decoration: none;
  user-select: none;
}

/* --- 鳥形圖案 --- */
.bird-graphic {
  position: absolute;
  top: -20px;
  right: 60px;
  width: 280px;
  height: auto;
  z-index: 6;
  opacity: 0.9;
}

/* --- 主文案 --- */
.hero-content {
  position: relative;
  z-index: 5;
  max-width: 900px;
  text-align: center;
}

.hero-line-1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.2;
  margin-bottom: 0;
}

.hero-line-2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 10px;
}

.hero-line-3 {
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  font-weight: 400;
  font-style: italic;
  color: var(--teal-light);
  line-height: 1.4;
}

/* --- 青色條帶區域 --- */
.teal-band {
  background-color: var(--teal);
  padding: 40px 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.teal-band-text {
  font-size: clamp(1.5rem, 4vw, 2.8rem);
  color: var(--blue-dark);
  text-align: center;
  white-space: nowrap;
}

.teal-band-text .except {
  font-weight: 800;
}

.teal-band-text .brand-name {
  font-family: 'Avenir Next World', 'Avenir Next', sans-serif;
  font-weight: 500;
  letter-spacing: 0.4em;
  margin-right: -0.4em;
}

/* --- 底部區域 --- */
.footer {
  background-color: var(--blue-dark);
  padding: 24px 80px;
  text-align: center;
  position: relative;
}

.footer-text {
  font-family: Calibri, 'Segoe UI', sans-serif;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 400;
}

.footer-text a {
  color: var(--teal-light);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
  transition: color 0.3s ease, text-shadow 0.3s ease;
}

.footer-text a:hover {
  color: var(--white);
  text-shadow: 0 0 8px rgba(153, 246, 228, 0.5);
}

/* --- 頁碼（右下角） --- */
.page-number {
  position: absolute;
  right: 40px;
  bottom: 24px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.3);
}

/* --- 響應式適配 --- */
@media (max-width: 768px) {
  .main-section {
    padding: 40px 30px;
  }

  .header {
    top: 20px;
    right: 25px;
  }

  .bird-graphic {
    width: 160px;
    right: 20px;
    top: 0;
  }

  .teal-band {
    padding: 30px;
  }

  .footer {
    padding: 20px 30px;
  }

  .page-number {
    right: 25px;
  }
}

@media (max-width: 480px) {
  .main-section {
    padding: 30px 20px;
  }

  .bird-graphic {
    width: 120px;
    right: 10px;
  }

  .logo {
    font-size: 14px;
  }

  .teal-band {
    padding: 24px 20px;
  }

  .footer {
    padding: 16px 20px;
  }
}