/* ========== Base ========== */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  color: #0a0a0a; background: #fafafa; line-height: 1.6;
}
img { max-width: 100%; display: block; }

.container { width: min(1120px, 92%); margin: 0 auto; }
.accent { color: #1f6fff; }

.btn { display: inline-block; padding: 12px 18px; border-radius: 10px; text-decoration: none; font-weight: 600; }
.btn.primary { background: #1f6fff; color: #fff; }
.btn.ghost { border: 2px solid #0f172a; color: #0f172a; margin-left: 10px; }

/* ========== Header ========== */
.site-header {
  position: sticky; top: 0; backdrop-filter: blur(8px);
  background: rgba(250,250,250,.8); border-bottom: 1px solid #eaeaea; z-index: 10;
}
.nav { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; }
.brand img { height: 40px; width: auto; }
.nav-links { display: flex; gap: 22px; list-style: none; margin: 0; padding: 0; }
.nav-links a { color: #0f172a; text-decoration: none; font-weight: 600; }
.nav-toggle { display: none; border: none; background: transparent; font-size: 24px; }

/* ========== Hero ========== */
.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: center; padding: 64px 0; }
.hero h1 { font-size: clamp(32px, 5vw, 56px); margin: 0 0 8px; }
.lead { font-size: 18px; color: #30343f; max-width: 56ch; }
.hero-logo { filter: drop-shadow(0 10px 30px rgba(0,0,0,.06)); }

/* ========== Sections ========== */
.section { padding: 56px 0; }
.section h2 { font-size: 28px; margin-bottom: 22px; }
.grid { display: grid; gap: 18px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid.three { grid-template-columns: repeat(3, 1fr); }

.card {
  background: #fff; padding: 20px; border-radius: 14px;
  border: 1px solid #eee; box-shadow: 0 1px 0 rgba(0,0,0,.03);
}

.project { border: 1px solid #eee; border-radius: 14px; overflow: hidden; background: #fff; }
.project-thumb { height: 160px; background: linear-gradient(180deg, #f1f5ff, #ffffff); }
.project-body { padding: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 8px 0 0; }
.tags li { font-size: 12px; padding: 6px 10px; border-radius: 999px; background: #1f6fff1A; color: #1f6fff; font-weight: 700; }

.about-wrap { display: grid; grid-template-columns: 1.6fr 1fr; gap: 22px; }
.list-check { list-style: none; padding: 0; margin: 0; }
.list-check li::before { content: "✔"; margin-right: 10px; color: #1f6fff; }

/* ========== Contact ========== */
.contact label { display: block; font-weight: 600; }
.contact input, .contact textarea {
  width: 100%; margin-top: 6px; padding: 12px 12px;
  border-radius: 12px; border: 1px solid #ddd; background: #fff;
}
.contact button { margin-top: 12px; }

/* ========== Footer ========== */
.site-footer { border-top: 1px solid #eee; padding: 26px 0; margin-top: 24px; }
.footer-grid { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-nav a { color: #475569; text-decoration: none; margin-left: 14px; }

/* ========== Utilities ========== */
.skeleton { position: relative; overflow: hidden; }
.skeleton::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.6), transparent);
  transform: translateX(-100%); animation: shimmer 1.8s infinite;
}
@keyframes shimmer { 100% { transform: translateX(100%); } }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .grid.two { grid-template-columns: 1fr; }
  .grid.three { grid-template-columns: 1fr; }
  .about-wrap { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .nav-links { position: absolute; right: 4%; top: 64px; display: none; flex-direction: column; background: #fff; padding: 14px; border-radius: 12px; border: 1px solid #eee; }
  .nav-links.show { display: flex; }
}