/* ============================
   WAFU / TANABATA NIGHT THEME
   ============================ */

:root {
  /* 夜空＋和風グリーン系 */
  --primary-color: #1f6f5b;      /* 深緑（見出し） */
  --primary-dark: #155445;
  --secondary-color: #2f8f7a;    /* 星雲グリーン */
  --accent-color: #f2e27a;       /* 星の光 */

  --text-primary: #243333;
  --text-secondary: #4a6661;
  --text-light: #6f8f8a;

  --bg-primary: #e9f4f1;
  --bg-secondary: #d6ebe6;
  --bg-accent: #f4fbf9;

  --border-light: rgba(31, 111, 91, 0.25);
  --border-primary: rgba(31, 111, 91, 0.45);

  --shadow-light: 0 4px 10px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 8px 20px rgba(0, 0, 0, 0.12);
  --shadow-heavy: 0 10px 30px rgba(0, 0, 0, 0.18);

  --border-radius-sm: 10px;
  --border-radius-md: 16px;
  --border-radius-lg: 25px;
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Zen Maru Gothic', 'Hiragino Maru Gothic Pro', 'Yu Gothic', sans-serif;
  line-height: 1.7;
  color: var(--text-primary);
  background: linear-gradient(180deg, #0f3d3e, #1f6f5b);
  min-height: 100vh;
  padding: 20px;
}

/* Fade Animation */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Container */
.container {
  max-width: 900px;
  margin: 0 auto;
  background: rgba(255,255,255,0.94);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-heavy);
  padding-bottom: 40px;
  border: 2px solid var(--border-primary);
  overflow: hidden;
}

/* Header */
.header {
  background: linear-gradient(180deg, #1f6f5b, #0f3d3e);
  padding: 60px 40px;
  text-align: center;
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

/* 星の帯（七夕感） */
.header::before {
  content: "";
  position: absolute;
  bottom: -20px;
  left: 0;
  width: 100%;
  height: 40px;
  background: repeating-linear-gradient(
    -45deg,
    rgba(255,255,255,0.35) 0,
    rgba(255,255,255,0.35) 8px,
    rgba(255,255,255,0.15) 8px,
    rgba(255,255,255,0.15) 16px
  );
  opacity: 0.5;
}

.app-title,
.policy-title {
  font-size: clamp(2.3rem, 6vw, 3.4rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-shadow: 0 2px 10px rgba(0,0,0,0.25);
}

.app-subtitle {
  margin-top: 15px;
  opacity: 0.9;
  font-size: 1.2rem;
}

/* Content */
.content {
  padding: 50px;
}

.section {
  margin-bottom: 50px;
  opacity: 0;
  transform: translateY(20px);
  animation: slideUp 0.6s ease forwards;
}

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

/* Section Title */
.section-title {
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  font-weight: 700;
  margin-bottom: 25px;
  padding-bottom: 10px;
  position: relative;
  color: var(--primary-color);
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 70px;
  height: 4px;
  background: var(--accent-color);
  border-radius: 10px;
}

/* Info Box */
.app-info {
  background: var(--bg-accent);
  padding: 35px;
  border-radius: var(--border-radius-md);
  border: 2px solid var(--border-light);
  box-shadow: var(--shadow-light);
  margin-bottom: 30px;
}

/* List Items */
.features-list {
  list-style: none;
  padding-left: 0;
  margin-top: 20px;
}

.features-list li {
  padding: 12px 0 12px 45px;
  position: relative;
  border-radius: var(--border-radius-sm);
}

.features-list li::before {
  content: "✦";
  position: absolute;
  left: 12px;
  font-size: 1.4rem;
  color: var(--accent-color);
}

/* Company / Contact */
.company-info,
.contact-info {
  background: var(--bg-accent);
  padding: 35px;
  border-radius: var(--border-radius-md);
  border: 2px solid var(--border-light);
  box-shadow: var(--shadow-light);
}

/* Date Info */
.date-info {
  text-align: center;
  background: var(--bg-accent);
  padding: 20px;
  border-radius: var(--border-radius-md);
  border: 2px solid var(--border-light);
  margin-top: 40px;
  color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }
  .content {
    padding: 30px;
  }
  .header {
    padding: 40px 20px;
  }
}

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