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

:root {
  --black: #000;
  --white: #fff;
  --gray: #888;
  --accent: #059669;
  --bg: #fafafa;
  --border: #e0e0e0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--black);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  overflow-x: hidden;
}

/* macOS cursor */
.cursor { position: fixed; width: 12px; height: 12px; background: var(--black); border-radius: 50%; pointer-events: none; z-index: 9999; transform: translate(-50%,-50%); transition: width 0.3s cubic-bezier(0.16,1,0.3,1), height 0.3s cubic-bezier(0.16,1,0.3,1), background 0.3s, opacity 0.3s; box-shadow: 0 0 0 1px rgba(0,0,0,0.1); }
.cursor.hover { width: 48px; height: 48px; background: rgba(0,0,0,0.08); box-shadow: 0 0 0 1.5px var(--black); }
.cursor.click { width: 8px; height: 8px; }

/* page transition */
.page-transition { position: fixed; inset: 0; background: var(--black); z-index: 10000; pointer-events: none; opacity: 0; }
.page-transition.enter { animation: pageIn 0.4s cubic-bezier(0.16,1,0.3,1) forwards; }
.page-transition.exit { animation: pageOut 0.3s cubic-bezier(0.7,0,0.84,0) forwards; }
@keyframes pageIn { 0% { opacity: 1; } 100% { opacity: 0; } }
@keyframes pageOut { 0% { opacity: 0; } 100% { opacity: 1; } }

body.loading { overflow: hidden; }

/* dot grid */
body::before { content: ""; position: fixed; inset: 0; background-image: radial-gradient(circle,#d4d4d4 0.5px,transparent 0.5px); background-size: 20px 20px; pointer-events: none; z-index: 0; opacity: 0.6; }

/* reveal */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.5s cubic-bezier(0.16,1,0.3,1), transform 0.5s cubic-bezier(0.16,1,0.3,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: 0.06s; }
.reveal-d2 { transition-delay: 0.12s; }
.reveal-d3 { transition-delay: 0.18s; }
.reveal-d4 { transition-delay: 0.24s; }

::selection { background: var(--accent); color: var(--white); }

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

/* nav */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 50; padding: 1.5rem 3rem; display: flex; justify-content: space-between; align-items: center; background: rgba(250,250,250,0.85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.nav-logo { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.04em; text-transform: lowercase; }
.nav-links { display: flex; gap: 2rem; }
.nav-links a { font-size: 0.7rem; text-transform: lowercase; letter-spacing: 0.04em; color: var(--gray); transition: color 0.2s; position: relative; }
.nav-links a::after { content: ""; position: absolute; bottom: -4px; left: 0; width: 0; height: 1px; background: var(--black); transition: width 0.2s ease; }
.nav-links a:hover { color: var(--black); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--black); }
.nav-links a.active::after { width: 100%; }

/* hero (landing) */
.hero { flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 0 2rem; min-height: 100vh; }
.hero h1 { font-size: clamp(4rem,12vw,10rem); font-weight: 700; letter-spacing: -0.05em; line-height: 0.85; }
.hero .sub { font-size: clamp(4rem,12vw,10rem); font-weight: 200; letter-spacing: -0.05em; line-height: 0.85; color: var(--gray); }
.hero-links { display: flex; gap: 1.5rem; margin-top: 3rem; }
.hero-links a { font-size: 0.7rem; text-transform: lowercase; letter-spacing: 0.06em; padding: 0.6rem 1.2rem; border: 1px solid var(--black); transition: background 0.2s, color 0.2s; }
.hero-links a:hover { background: var(--black); color: var(--white); }

/* page layout */
.page { flex: 1; padding: 8rem 3rem 4rem; max-width: 720px; margin: 0 auto; width: 100%; }
.page-label { font-size: 0.6rem; color: var(--gray); text-transform: lowercase; letter-spacing: 0.06em; margin-bottom: 0.5rem; display: inline-block; border-bottom: 1px dashed var(--gray); padding-bottom: 0.25rem; }
.page h2 { font-size: clamp(1.8rem,4vw,2.8rem); font-weight: 700; letter-spacing: -0.03em; margin-bottom: 2rem; }

/* about */
.bio { font-size: 1.1rem; line-height: 1.6; color: #333; max-width: 50ch; margin-bottom: 2.5rem; }
.tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 3rem; }
.tags span { font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.08em; padding: 0.4rem 0.8rem; border: 1px solid var(--black); transition: background 0.2s, color 0.2s; }
.tags span:hover { background: var(--black); color: var(--white); }
.about-extras { border-top: 1px solid var(--border); padding-top: 2rem; }
.about-extras p { font-size: 0.85rem; color: #555; line-height: 1.7; }

/* projects */
.project-list { display: flex; flex-direction: column; }
.project-card { display: flex; flex-direction: column; gap: 0.5rem; padding: 2rem; border: 1px solid var(--border); transition: border-color 0.2s, box-shadow 0.2s; margin-bottom: 1rem; }
.project-card:hover { border-color: var(--black); box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.project-card-top { display: flex; justify-content: space-between; align-items: center; }
.project-name { font-size: 1.3rem; font-weight: 600; }
.project-arrow { font-size: 1rem; transition: transform 0.2s ease; }
.project-card:hover .project-arrow { transform: translateX(4px); }
.project-desc { font-size: 0.8rem; color: var(--gray); }
.project-tags { display: flex; gap: 0.4rem; margin-top: 0.5rem; }
.project-tags span { font-size: 0.55rem; text-transform: uppercase; letter-spacing: 0.06em; padding: 0.25rem 0.5rem; border: 1px solid var(--border); color: var(--gray); }

/* contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; margin-top: 1rem; }
.contact-form { display: flex; flex-direction: column; gap: 1.2rem; }
.contact-form input, .contact-form textarea { font-family: inherit; font-size: 0.85rem; padding: 0.9rem 0; border: none; border-bottom: 1px solid var(--border); background: transparent; color: var(--black); outline: none; resize: none; transition: border-color 0.2s; }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--accent); }
.contact-form input::placeholder, .contact-form textarea::placeholder { color: #bbb; }
.contact-form button { font-family: inherit; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; padding: 1rem; background: var(--black); color: var(--white); border: none; transition: opacity 0.2s; margin-top: 0.5rem; }
.contact-form button:hover { opacity: 0.7; }
.form-status { font-size: 0.7rem; color: var(--gray); margin-top: 0.5rem; min-height: 1em; }
.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-info-item { display: flex; flex-direction: column; gap: 0.2rem; }
.contact-info-label { font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--gray); }
.contact-info a { font-size: 0.9rem; border-bottom: 1px solid var(--black); display: inline-block; width: fit-content; transition: opacity 0.2s; }
.contact-info a:hover { opacity: 0.5; }

/* 88x31 buttons popup */
.buttons-trigger { font-size: 0.6rem; color: var(--gray); text-transform: lowercase; letter-spacing: 0.04em; background: none; border: none; cursor: none; padding: 0; transition: color 0.2s; }
.buttons-trigger:hover { color: var(--black); }
.about-extras .buttons-trigger { font-size: 0.85rem; color: var(--black); text-decoration: underline; text-underline-offset: 3px; }
.about-extras .buttons-trigger:hover { opacity: 0.5; }
.buttons-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.85); z-index: 200; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: opacity 0.25s ease, visibility 0.25s ease; }
.buttons-overlay.active { opacity: 1; visibility: visible; }
.buttons-popup { background: var(--white); padding: 2rem; width: min(92vw,520px); position: relative; border: 1px solid var(--border); max-height: 80vh; overflow-y: auto; }
.buttons-popup h3 { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 1.2rem; color: var(--gray); }
.buttons-grid { display: flex; flex-wrap: wrap; gap: 6px; }
.buttons-grid a { display: block; width: 88px; height: 31px; image-rendering: pixelated; border: 1px solid var(--border); transition: border-color 0.2s, transform 0.15s; }
.buttons-grid a:hover { border-color: var(--black); transform: scale(1.05); }
.buttons-grid img { width: 100%; height: 100%; display: block; }
.buttons-grid a.buttons-text { width: 88px; height: 31px; border: 1px solid var(--border); background: var(--white); display: flex; align-items: center; justify-content: center; text-align: center; font-size: 0.5rem; line-height: 1.1; padding: 0 2px; color: var(--black); text-decoration: none; text-transform: lowercase; }
.buttons-grid a.buttons-text:hover { border-color: var(--black); }
.buttons-self { display: flex; align-items: center; gap: 1rem; padding: 1rem; background: #f2f2f2; border: 1px solid var(--border); margin-bottom: 1.5rem; }
.buttons-self-btn { display: block; width: 88px; height: 31px; flex-shrink: 0; border: 1px solid var(--border); image-rendering: pixelated; }
.buttons-self-btn img { width: 100%; height: 100%; display: block; }
.buttons-copy { display: flex; flex: 1; gap: 0.5rem; min-width: 0; }
.buttons-copy input { flex: 1; min-width: 0; font-family: "SF Mono","Consolas",monospace; font-size: 0.55rem; padding: 0.5rem; border: 1px solid var(--border); background: var(--white); color: var(--gray); }
.buttons-copy-btn { font-family: inherit; font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.05em; padding: 0.5rem 0.8rem; background: var(--black); color: var(--white); border: none; cursor: none; flex-shrink: 0; transition: opacity 0.2s; }
.buttons-copy-btn:hover { opacity: 0.7; }
.buttons-close { position: absolute; top: 0.8rem; right: 1rem; font-size: 1.3rem; background: none; border: none; cursor: none; color: var(--gray); line-height: 1; transition: color 0.2s; }
.buttons-close:hover { color: var(--black); }

/* footer */
.footer { padding: 2rem 3rem; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.footer p { font-size: 0.6rem; color: var(--gray); text-transform: lowercase; letter-spacing: 0.04em; }

/* responsive */
@media (max-width: 640px) {
  .nav { padding: 1rem 1.5rem; }
  .nav-links { gap: 1rem; }
  .page { padding: 6rem 1.5rem 3rem; }
  .hero-links { flex-direction: column; gap: 0.8rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer { padding: 1.5rem; flex-direction: column; gap: 0.5rem; }
  .cursor { display: none; }
}