@charset "UTF-8";

/* ==========================================================================
   CSS Variables (Theme Tokens)
   ========================================================================== */
:root {
  --primary: #f59e0b;
  --primary-hover: #d97706;
  --bg-color: #f8fafc;
  --surface: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  
  --font-base: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  --spacing-sm: clamp(0.5rem, 2vw, 1rem);
  --spacing-md: clamp(1rem, 3vw, 2rem);
  --spacing-lg: clamp(2rem, 5vw, 4rem);
  
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-hover: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #0f172a;
    --surface: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5);
  }
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease, background-color 0.3s ease;
}

/* Typography Responsive (clamp) */
h1 { font-size: clamp(1.5rem, 5vw, 2.5rem); line-height: 1.3; }
h2 { font-size: clamp(1.25rem, 4vw, 2rem); line-height: 1.4; margin-bottom: var(--spacing-sm); }
h3 { font-size: clamp(1.1rem, 3vw, 1.5rem); line-height: 1.4; margin-bottom: 0.5rem; }
p { font-size: clamp(0.9rem, 2.5vw, 1rem); }

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--spacing-md);
}

/* Header */
.site-header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: clamp(1.1rem, 3vw, 1.25rem);
  font-weight: 700;
  color: var(--primary);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: clamp(0.5rem, 2vw, 1.5rem);
  flex-wrap: wrap;
}

.nav-menu a {
  font-size: 0.9rem;
  font-weight: 600;
}
.nav-menu a:hover {
  color: var(--primary);
}

/* Breadcrumbs */
.breadcrumb-nav {
  padding-block: 1rem;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.breadcrumb li:not(:last-child)::after {
  content: ">";
  margin-inline: 0.5rem;
}
.breadcrumb a:hover {
  text-decoration: underline;
  color: var(--primary);
}

/* Hero Section */
.hero-section {
  padding-block: var(--spacing-lg);
  text-align: center;
  background: linear-gradient(135deg, var(--surface) 0%, var(--bg-color) 100%);
  border-bottom: 1px solid var(--border);
}

.hero-tag {
  display: inline-block;
  background-color: var(--primary);
  color: #fff;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.hero-title {
  margin-bottom: var(--spacing-md);
}

.hero-sales-pitches {
  max-width: 800px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: left;
}

.hero-desc {
  color: var(--text-muted);
  background-color: var(--surface);
  padding: 1rem;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--primary);
}

.hero-desc strong {
  color: var(--text-main);
  display: block;
  margin-bottom: 0.25rem;
}

/* Section Header */
.section-header {
  margin-bottom: var(--spacing-md);
  text-align: center;
}
.section-header p {
  color: var(--text-muted);
}

/* Grid Layout for Cards */
.tea-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(clamp(300px, 35vw, 350px), 1fr));
  gap: var(--spacing-md);
}

/* Product Card */
.tea-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.tea-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.card-img-container {
  width: 100%;
  aspect-ratio: 4/3;
  background-color: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border);
}

@media (prefers-color-scheme: dark) {
  .card-img-container { background-color: #334155; }
}

.tea-svg {
  width: 50%;
  height: 50%;
  opacity: 0.9;
}

.card-top {
  padding: 1.5rem;
  flex-grow: 1;
}

.card-badges {
  margin-bottom: 0.75rem;
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  background-color: #e2e8f0;
  color: #475569;
}
@media (prefers-color-scheme: dark) {
  .badge { background-color: #334155; color: #cbd5e1; }
}

.tea-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* Card Details (New) */
.card-details {
  list-style: none;
  font-size: 0.85rem;
  background-color: var(--bg-color);
  padding: 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.card-details li {
  line-height: 1.5;
  color: var(--text-main);
}
.card-details strong {
  color: var(--primary);
  display: inline-block;
  margin-right: 0.25rem;
}

.card-bottom {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  background-color: var(--bg-color);
}

.action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.75rem;
  background-color: var(--primary);
  color: #fff;
  font-weight: bold;
  border-radius: var(--radius-md);
  text-align: center;
}
.action-btn:hover {
  background-color: var(--primary-hover);
}

/* FAQ Section */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 800px;
  margin-inline: auto;
}
.faq-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.faq-q {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.faq-a {
  color: var(--text-main);
}

/* Footer */
.site-footer {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  padding-block: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.footer-info h3 {
  color: var(--primary);
}

.footer-links h4 {
  margin-bottom: 1rem;
}
.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}
.footer-links a:hover {
  color: var(--primary);
}

.footer-disclosure {
  text-align: center;
  margin-bottom: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.footer-bottom {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}