/* デコ活風景写真 サイト共通スタイル */
:root{
  --bg:#0b1020;        /* deep navy */
  --card:#121a33;      /* card background */
  --text:#e8ecf6;      /* main text */
  --muted:#9fb0d4;     /* muted text */
  --brand:#71e6a6;     /* accent (eco green) */
  --accent:#77c9ff;    /* accent (sky) */
  --danger:#ff6b6b;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:linear-gradient(180deg,#0b1020,#101736);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

.container{max-width:1100px;margin:0 auto;padding:24px}
.header{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:16px 0}
.brand{display:flex;gap:12px;align-items:center}
.brand .logo{width:40px;height:40px;border-radius:12px;background:radial-gradient(circle at 30% 30%, var(--brand), transparent 60%),radial-gradient(circle at 70% 70%, var(--accent), transparent 60%);box-shadow:0 0 0 2px rgba(255,255,255,.06), 0 8px 24px rgba(0,0,0,.4)}
h1{font-size:28px;margin:0}
.nav{display:flex;gap:12px}
.nav a{padding:10px 14px;border:1px solid rgba(255,255,255,.08);border-radius:999px;background:rgba(255,255,255,.03)}
.nav a.active{background:rgba(113,230,166,.12);border-color:rgba(113,230,166,.45)}

.hero{padding:24px;border:1px solid rgba(255,255,255,.08);background:linear-gradient(180deg, rgba(113,230,166,.08), rgba(119,201,255,.05));border-radius:20px;box-shadow:0 12px 40px rgba(0,0,0,.35)}
.hero h2{font-size:24px;margin:0 0 8px}
.hero p{color:var(--muted);margin:0}

.card{background:var(--card);border:1px solid rgba(255,255,255,.08);border-radius:20px;padding:18px;box-shadow:0 10px 30px rgba(0,0,0,.35)}
.card h3{margin-top:0}

.grid{display:grid;gap:16px}
.grid.cols-2{grid-template-columns:1fr}
@media(min-width:900px){.grid.cols-2{grid-template-columns:1fr 1fr}}

.input, select, textarea{width:100%;padding:12px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.02);color:var(--text);outline:none}
.input:focus, select:focus, textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(113,230,166,.2)}

label{display:block;margin:8px 0 6px;color:#d6def0;font-weight:600}
.helper{font-size:12px;color:var(--muted);margin-top:6px}

.btn{display:inline-flex;gap:8px;align-items:center;padding:12px 16px;border-radius:14px;border:1px solid rgba(255,255,255,.12);background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));color:var(--text);cursor:pointer}
.btn.primary{background:linear-gradient(180deg, rgba(113,230,166,.28), rgba(113,230,166,.15));border-color:rgba(113,230,166,.4)}
.btn.danger{background:linear-gradient(180deg, rgba(255,107,107,.28), rgba(255,107,107,.15));border-color:rgba(255,107,107,.4)}
.btn:disabled{opacity:.6;cursor:not-allowed}

.footer{margin-top:32px;color:var(--muted);font-size:13px}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.tile{position:relative;overflow:hidden;border-radius:16px;border:1px solid rgba(255,255,255,.08);background:#0c132a}
.tile img{width:100%;height:180px;object-fit:cover;display:block;transition:transform .2s ease}
.tile:hover img{transform:scale(1.03)}
.tile .meta{padding:10px}
.badge{display:inline-block;padding:4px 8px;border-radius:999px;background:rgba(113,230,166,.14);border:1px solid rgba(113,230,166,.35);font-size:12px;margin-right:6px}
kbd{padding:2px 6px;border-radius:6px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);font-family:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;font-size:12px}