/* Mayuha shared design system. Navy + gold, Inter (Latin) + Noto Sans JP (Japanese).
   Loaded on every page (see _headers: /assets/* is cached long-term/immutable). */

:root {
    --navy-deepest: #0a1628;
    --navy-deep: #1a2a4a;
    --navy: #1a365d;
    --navy-hover: #2d4a7c;
    --gold: #d69e2e;
    --gold-hover: #b7862d;
    --gold-soft: #c8a84e;

    --bg: #f8fafc;
    --bg-alt: #f4f6fb;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-sub: #64748b;
    --border-subtle: #e2e8f0;

    --success: #166534;
    --success-bg: #dcfce7;
    --info-bg: #e0f2fe;
    --info-text: #0369a1;

    --font-base: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 12px -1px rgba(15, 23, 42, 0.10);
    --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.14);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

* { box-sizing: border-box; }

body {
    font-family: var(--font-base);
    margin: 0;
    background: var(--bg);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.25; font-weight: 800; color: var(--text-main); }
h1 { font-size: 2.25rem; margin: 0 0 0.75rem; }
h2 { font-size: 1.6rem; margin: 0 0 1rem; }
h3 { font-size: 1.15rem; margin: 0 0 0.5rem; font-weight: 700; }
p { margin: 0 0 0.75rem; color: var(--text-sub); }
a { color: var(--navy); }

.container, .app {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ---------- Header / nav ---------- */
.site-header {
    background: var(--card-bg);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 20;
}
.site-header .header-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}
.site-logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--navy);
    text-decoration: none;
    letter-spacing: -0.01em;
}
.site-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    align-items: center;
}
.site-nav a {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.92rem;
}
.site-nav a:hover { color: var(--navy-hover); }
.lang-switch { font-size: 0.85rem; color: var(--text-sub); }
.lang-switch a { color: var(--navy); font-weight: 600; text-decoration: none; margin-left: 0.4rem; }
.lang-switch a:hover { text-decoration: underline; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-block;
    padding: 0.7rem 1.4rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    text-align: center;
    border: none;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}
.btn-primary { background: var(--gold); color: #fff; box-shadow: 0 4px 12px rgba(214, 158, 46, 0.32); }
.btn-primary:hover { background: var(--gold-hover); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--navy); border: 2px solid var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }
.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--navy-hover); }
.btn-lg { padding: 1rem 2.25rem; font-size: 1.05rem; border-radius: var(--radius-md); }

/* ---------- Cards / badges ---------- */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    box-shadow: var(--shadow-sm);
}
.card-hover { transition: transform 0.2s ease, box-shadow 0.2s ease; }
.card-hover:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    background: var(--info-bg);
    color: var(--info-text);
    margin-bottom: 0.75rem;
}

/* ---------- Hero (light, marketing pages) ---------- */
.hero-light {
    text-align: center;
    padding: 3.5rem 2rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #eef2ff 100%);
    border-radius: var(--radius-xl);
}
.hero-light h1 { font-size: 2.5rem; }
.hero-light .subtitle { font-size: 1.15rem; color: var(--text-sub); font-weight: 600; max-width: 640px; margin: 0 auto 1.5rem; }

/* ---------- Hero (dark navy, e.g. LP price panel) ---------- */
.hero-dark {
    background: linear-gradient(135deg, var(--navy-deepest) 0%, var(--navy-deep) 100%);
    color: #fff;
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
}
.hero-dark h2 { color: #fff; font-size: 1.3rem; margin-bottom: 0.5rem; }
.hero-dark .price-comparison { font-size: 1.9rem; font-weight: 800; margin: 0.75rem 0; color: var(--gold-soft); }
.hero-dark .savings { font-size: 0.95rem; opacity: 0.85; }

/* ---------- Price / list content ---------- */
ul, ol { padding-left: 1.2rem; }
ul li, ol li { margin-bottom: 0.35rem; }
.hint { font-size: 0.82rem; color: var(--text-sub); }

/* ---------- Footer ---------- */
.site-footer {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--text-sub);
    margin-top: 3rem;
    border-top: 1px solid var(--border-subtle);
    font-size: 0.9rem;
}
.site-footer p { margin: 0.2rem 0; color: var(--text-sub); }

/* ---------- Forms ---------- */
label { font-weight: 600; color: var(--navy); margin-bottom: 0.35rem; display: block; }
input, select, textarea {
    width: 100%;
    padding: 0.7rem;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
}
textarea { min-height: 120px; resize: vertical; }

@media (max-width: 640px) {
    h1 { font-size: 1.8rem; }
    .hero-light h1 { font-size: 2rem; }
    .hero-light { padding: 2.5rem 1.25rem; }
}