/* =========================================================
   KEIBA ARENA - common.css
   共通CSS：色・リセット・ヘッダー・ボタン・フッター
========================================================= */

:root{
  --cream:#f7f0e5;
  --cream-2:#fffaf2;
  --paper:#fffdf8;
  --ink:#243028;
  --muted:#766b5f;
  --line:#e3d4bd;
  --green:#0f3d2e;
  --green-2:#174f3b;
  --gold:#c49a54;
  --brown:#7b5733;
  --white:#ffffff;
  --shadow:0 22px 60px rgba(56,38,18,.12);
  --soft-shadow:0 10px 30px rgba(61,42,19,.06);
  --radius:16px;
  --radius-lg:24px;
  --max:1180px;
}

*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  font-family:"Noto Sans JP",system-ui,-apple-system,BlinkMacSystemFont,"Yu Gothic",sans-serif;
  background:var(--cream-2);
  color:var(--ink);
  line-height:1.75;
  letter-spacing:.03em;
}

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

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

button,
input,
textarea,
select{
  font:inherit;
}

::selection{
  background:rgba(196,154,84,.28);
}

/* ===== Header ===== */
.site-header{
  min-height:82px;
  padding:0 clamp(18px,4vw,54px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  border-bottom:1px solid rgba(95,73,45,.14);
  background:rgba(255,250,242,.92);
  backdrop-filter:blur(16px);
  position:sticky;
  top:0;
  z-index:50;
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}

.brand-icon,
.brand-mark{
  width:38px;
  height:38px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--green);
  font-size:26px;
  line-height:1;
}

.brand-text strong{
  display:block;
  font-family:Georgia,"Times New Roman","Yu Mincho","Hiragino Mincho ProN",serif;
  font-size:22px;
  font-weight:500;
  letter-spacing:.12em;
  line-height:1;
  color:#26352c;
}

.brand-text small{
  display:block;
  margin-top:6px;
  color:var(--muted);
  font-size:11px;
  letter-spacing:.12em;
}

.global-nav{
  display:flex;
  align-items:center;
  gap:clamp(18px,3vw,34px);
  font-size:13px;
  font-weight:700;
  white-space:nowrap;
}

.global-nav a{
  position:relative;
  color:#3d332b;
  transition:.2s ease;
}

.global-nav a span{
  display:block;
  margin-top:2px;
  color:#998873;
  font-family:Georgia,"Times New Roman",serif;
  font-size:10px;
  font-weight:400;
  letter-spacing:.12em;
}

.global-nav a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-9px;
  height:1px;
  background:var(--green);
  transform:scaleX(0);
  transform-origin:left;
  transition:.22s ease;
}

.global-nav a:hover{
  color:var(--green);
}

.global-nav a:hover::after{
  transform:scaleX(1);
}

.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex-shrink:0;
}

.icon-link{
  font-size:23px;
  line-height:1;
}

.login-btn{
  min-height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 20px;
  background:var(--green);
  color:#fffaf2;
  border:1px solid var(--green);
  border-radius:2px;
  font-size:13px;
  font-weight:800;
  letter-spacing:.08em;
  transition:.22s ease;
}

.login-btn:hover{
  background:var(--green-2);
  transform:translateY(-2px);
  box-shadow:0 12px 24px rgba(15,61,46,.18);
}

/* ===== Buttons ===== */
.btn{
  min-height:48px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:0 26px;
  border-radius:2px;
  border:1px solid transparent;
  cursor:pointer;
  font-size:14px;
  font-weight:800;
  letter-spacing:.08em;
  transition:.22s ease;
}

.btn:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 26px rgba(56,38,18,.12);
}

.btn.primary{
  background:var(--green);
  color:#fffaf2;
  border-color:var(--green);
}

.btn.primary:hover{
  background:var(--green-2);
}

.btn.secondary{
  background:rgba(255,253,248,.62);
  border-color:rgba(84,63,42,.42);
  color:#3c332c;
}

.btn.gold{
  background:linear-gradient(135deg,#d6b16a,#b8873e);
  color:#fff;
  border-color:transparent;
}

.small-link{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-top:18px;
  min-height:40px;
  padding:0 18px;
  background:var(--green);
  color:#fffaf2;
  border:1px solid var(--green);
  border-radius:2px;
  font-size:13px;
  font-weight:800;
  letter-spacing:.08em;
  transition:.22s ease;
}

.small-link::after{
  content:"→";
  margin-left:10px;
}

.small-link:hover{
  background:var(--green-2);
  transform:translateY(-2px);
}

.small-link.outline{
  background:transparent;
  color:var(--green);
  border-color:rgba(15,61,46,.35);
}

/* ===== Shared text ===== */
.script,
.eyebrow{
  font-family:Georgia,"Times New Roman","Yu Mincho","Hiragino Mincho ProN",serif;
  font-style:italic;
  color:var(--gold);
  letter-spacing:.08em;
}

.section-wrap{
  max-width:var(--max);
  margin:0 auto;
  padding:56px clamp(18px,4vw,38px);
  display:grid;
  grid-template-columns:230px 1fr;
  gap:34px;
  border-bottom:1px solid rgba(122,91,54,.16);
}

.section-aside h2{
  margin:8px 0 12px;
  color:var(--green);
  font-family:Georgia,"Times New Roman","Yu Mincho","Hiragino Mincho ProN",serif;
  font-size:30px;
  font-weight:500;
  line-height:1.45;
}

.section-aside p:not(.script){
  color:var(--muted);
  font-size:14px;
}

/* ===== Cards common ===== */
.article-card,
.mini-card,
.guide-card{
  background:rgba(255,253,248,.86);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--soft-shadow);
  transition:.24s ease;
}

.article-card:hover,
.mini-card:hover,
.guide-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow);
}

.tag{
  display:inline-flex;
  align-items:center;
  border-radius:999px;
  padding:4px 9px;
  background:#efe3cf;
  color:#765427;
  font-size:11px;
  font-weight:800;
}

/* ===== Footer ===== */
.site-footer{
  background:linear-gradient(135deg,#0d3024,#0f3d2e 60%,#092219);
  color:#d8c9ad;
  padding:48px clamp(18px,4vw,38px) 30px;
}

.footer-inner{
  max-width:var(--max);
  margin:0 auto;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr;
  gap:40px;
}

.footer-brand strong{
  display:block;
  margin-bottom:12px;
  color:#fff8e8;
  font-family:Georgia,"Times New Roman","Yu Mincho","Hiragino Mincho ProN",serif;
  font-size:26px;
  font-weight:500;
  letter-spacing:.08em;
}

.footer-brand p,
.footer-links a,
.footer-note{
  color:#d8c9ad;
  font-size:13px;
}

.footer-links h4{
  margin:0 0 12px;
  color:#fff8e8;
  font-size:14px;
  letter-spacing:.08em;
}

.footer-links ul{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:8px;
}

.footer-links a{
  transition:.2s ease;
}

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

.footer-note{
  max-width:var(--max);
  margin:32px auto 0;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  line-height:1.8;
}

/* ===== Mobile Header / Side Menu ===== */
.menu-toggle{
  display:none;
}

/* ===== Responsive common ===== */
@media (max-width:900px){
  .site-header{
    min-height:56px;
    padding:8px 14px;
    flex-wrap:nowrap;
    gap:10px;
  }

  .brand{
    gap:6px;
    flex-shrink:0;
    }

  .brand-icon,
  .brand-mark{
    width:32px;
    height:32px;
    font-size:23px;
  }

  .global-nav{
    display:none;
  }

  .global-nav.is-open{
    position:fixed;
    top:56px;
    right:0;
    width:78%;
    max-width:310px;
    height:calc(100vh - 56px);
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:24px;
    background:#fffaf2;
    border-left:1px solid var(--line);
    box-shadow:-18px 0 40px rgba(56,38,18,.16);
    z-index:80;
  }

  .global-nav.is-open a{
    width:100%;
    padding:15px 0;
    border-bottom:1px solid rgba(95,73,45,.14);
    font-size:15px;
  }

  .global-nav.is-open a span{
    display:block;
    margin-top:2px;
    font-size:10px;
  }

  .header-actions{
    margin-left:auto;
    gap:10px;
  }

  .icon-link{
    display:none;
  }

  .login-btn{
    min-height:34px;
    padding:0 12px;
    font-size:11px;
    letter-spacing:.03em;
    white-space:nowrap;
  }

  .menu-toggle{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:38px;
    height:38px;
    border:1px solid rgba(95,73,45,.22);
    background:#fffaf2;
    color:var(--green);
    font-size:22px;
    line-height:1;
    cursor:pointer;
  }

  .section-wrap{
    grid-template-columns:1fr;
    gap:20px;
  }

  .footer-inner{
    grid-template-columns:1fr;
    gap:26px;
  }

  .brand-text{
    display:block;
  }

  .brand-text strong{
    font-size:15px;
    letter-spacing:.03em;
  }

  .brand-text small{
    display:none;
  }

}


@media (max-width:560px){

  body{
    letter-spacing:.02em;
  }

  .site-header{
    padding:8px 12px;
  }
  .brand-text strong{
    font-size:13px;
    letter-spacing:0;
  }

  .brand-icon,
  .brand-mark{
    width:30px;
    height:30px;
    font-size:22px;
  }

  .login-btn{
    min-height:32px;
    padding:0 10px;
    font-size:10px;
  }

  .menu-toggle{
    width:36px;
    height:36px;
    font-size:21px;
  }

  .btn{
    width:100%;
  }

  .section-wrap{
    padding:42px 18px;
  }
}
body.menu-open{
  overflow:hidden;
}
@media (max-width:900px){
  .site-header .global-nav.is-open{
    display:flex !important;
  }
}