/* Minimal, clean styles for a one-page app site */
:root {
  --bg: #0b0c10;
  --panel: #111319;
  --text: #e6e6e6;
  --muted: #a8b0ba;
  --brand: #34d399; /* emerald-ish */
  --card: #131722;
  --border: #222838;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica, Arial, "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", Meiryo, sans-serif; }
img { max-width: 100%; display: block; }

.container { width: min(1024px, 92%); margin-inline: auto; }

.header { display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center; padding: 24px 0; }
.header.small { padding: 16px 0; }
.app-icon { width: 72px; height: 72px; border-radius: 16px; box-shadow: 0 2px 16px rgba(0,0,0,0.4); }
.app-icon.small { width: 56px; height: 56px; }

.titles h1 { margin: 0 0 6px 0; font-size: clamp(20px, 3vw, 28px); }
.tagline { margin: 0; color: var(--muted); }

.lang-toggle button {
  background: transparent; color: var(--text);
  border: 1px solid var(--border); border-radius: 12px;
  padding: 8px 12px; cursor: pointer; margin-left: 6px;
}
.lang-toggle button.active { background: var(--panel); }

.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 12px 0 28px; }
.button {
  display: inline-block; padding: 12px 16px; border-radius: 12px;
  border: 1px solid var(--border); text-decoration: none; color: var(--text);
}
.button.primary { background: var(--brand); color: #0b0c10; border-color: transparent; font-weight: 700; }

.features .grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 16px; }
.card h3 { margin-top: 0; }

.screenshots .gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 8px; }
.shot { aspect-ratio: 9/19.5; border-radius: 14px; border: 1px dashed var(--border); display: grid; place-items: center; color: var(--muted); }

.note { color: var(--muted); font-size: 0.95rem; }

.footer { padding: 24px 0; color: var(--muted); }

.hidden { display: none !important; }

@media (max-width: 900px) {
  .features .grid { grid-template-columns: 1fr; }
  .screenshots .gallery { grid-template-columns: repeat(2, 1fr); }
}