/* ===========================
   Buzz Commit COMMON
   白背景・紺基調・黄色アクセント
   =========================== */

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

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-navy: #1a365d;
  --color-navy-light: #2c5282;
  --color-navy-dark: #0d2137;
  --color-text: #1a365d;
  --color-text-muted: #5a6c7d;
  --color-border: #e2e8f0;
  --color-accent: #F5C842;
  --color-accent-hover: #E6B800;
  --color-accent-bg: #fffde7;
  --font-en: 'Inter', 'Helvetica Neue', sans-serif;
  --font-jp: 'Noto Sans JP', sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

body {
  font-family: var(--font-jp);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
}

/* HEADER */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 40px;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background 0.3s var(--ease);
}

.header-inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  font-family: var(--font-en);
  font-size: 0;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: 0.02em;
  display: block;
  line-height: 0;
}

.header-logo img {
  height: 28px;
  width: auto;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 40px;
}

.header-nav a {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  transition: color 0.2s;
}

.header-nav a:hover,
.header-nav .header-nav-active {
  color: var(--color-navy);
}

.header-cta {
  color: var(--color-navy) !important;
  padding: 10px 24px;
  border: 1px solid var(--color-accent);
  background: var(--color-accent);
  color: var(--color-navy-dark) !important;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.header-cta:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #fff !important;
}

/* FOOTER */
.site-footer {
  background: var(--color-navy);
  color: rgba(255,255,255,0.75);
  padding: 80px 40px 40px;
  border-top: 3px solid var(--color-accent);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  gap: 40px;
}

.footer-logo {
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  color: #ffffff;
}

.footer-tagline {
  font-size: 13px;
  margin-top: 8px;
  color: rgba(255,255,255,0.6);
}

.footer-nav {
  display: flex;
  gap: 64px;
}

.footer-nav-group h4 {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.footer-nav-group a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 12px;
  transition: color 0.2s;
}

.footer-nav-group a:hover {
  color: #fff;
}

.footer-bottom {
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}

/* BUTTONS */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-accent);
  color: var(--color-navy-dark);
  padding: 16px 36px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  border: none;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s, transform 0.2s;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
  box-shadow: 0 4px 16px rgba(212, 160, 23, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--color-navy);
  padding: 15px 34px;
  border: 1px solid var(--color-navy);
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.btn-secondary:hover {
  background: var(--color-navy);
  color: #fff;
}

/* UTILITIES */
.inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

/* WordPress Admin Bar */
.admin-bar .site-header {
  top: 32px;
}

@media (max-width: 782px) {
  .admin-bar .site-header {
    top: 46px;
  }
}

@media (max-width: 768px) {
  .site-header { padding: 0 20px; }
  .header-nav { display: none; }
  .inner { padding: 0 20px; }
  .footer-top { flex-direction: column; }
  .footer-nav { flex-direction: column; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}