/* ===== tatchi.me — digital card ===== */

:root {
  --bg: #0a0a0f;
  --bg-card: rgba(255, 255, 255, 0.025);
  --bg-card-2: rgba(20, 20, 28, 0.7);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #e8eaf0;
  --text-dim: #a4a8b3;
  --text-faint: #6c7080;
  --accent: #a78bfa;
  --grad: linear-gradient(135deg, #a78bfa 0%, #f472b6 50%, #fb923c 100%);
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: 'Inter', ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

:root.light {
  --bg: #f6f5f1;
  --bg-card: rgba(0, 0, 0, 0.02);
  --bg-card-2: rgba(255, 255, 255, 0.85);
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.16);
  --text: #1a1b20;
  --text-dim: #4a4d56;
  --text-faint: #8a8d96;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px; line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex; align-items: center; justify-content: center;
  padding: 32px 16px;
  transition: background 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }

.bg-grid {
  position: fixed; inset: 0; z-index: -2;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
:root.light .bg-grid {
  background-image:
    linear-gradient(rgba(0,0,0,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.04) 1px, transparent 1px);
}
.bg-glow {
  position: fixed; top: -10%; left: 50%; transform: translateX(-50%);
  width: 800px; height: 800px; z-index: -1; pointer-events: none;
  background: radial-gradient(circle, rgba(167,139,250,0.20) 0%, rgba(244,114,182,0.10) 35%, transparent 65%);
  filter: blur(40px);
}

/* Card page */
.card-page {
  width: 100%; max-width: 480px;
  display: flex; flex-direction: column; align-items: center;
  gap: 24px;
}
.card {
  width: 100%;
  background: var(--bg-card-2);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--border-strong);
  border-radius: 28px;
  padding: 28px 28px 22px;
  box-shadow: 0 30px 80px -20px rgba(0,0,0,0.6), 0 0 0 1px rgba(167,139,250,0.06);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% -10%, rgba(167,139,250,0.15), transparent 50%);
  pointer-events: none;
}

/* Top bar */
.card-top {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 24px; position: relative; z-index: 1;
}
.status {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.08em; color: var(--text-dim);
  text-transform: uppercase;
  padding: 4px 10px;
  background: rgba(124,249,176,0.08);
  border: 1px solid rgba(124,249,176,0.2);
  border-radius: 999px;
}
.status-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #7cf9b0; box-shadow: 0 0 8px #7cf9b0;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }
.theme-toggle {
  background: var(--bg-card); border: 1px solid var(--border-strong);
  border-radius: 10px; padding: 7px; cursor: pointer; color: var(--text-dim);
  display: inline-flex; align-items: center; justify-content: center;
  transition: 0.2s ease;
}
.theme-toggle:hover { color: var(--text); border-color: var(--border-strong); }
.icon-moon { display: none; }
:root.light .icon-sun { display: none; }
:root.light .icon-moon { display: block; }

/* Identity */
.card-id { text-align: center; margin-bottom: 28px; position: relative; z-index: 1; }
.avatar-wrap {
  width: 84px; height: 84px; position: relative;
  margin: 0 auto 18px;
}
.avatar-ring {
  position: absolute; inset: -5px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, #a78bfa, #f472b6, #fb923c, #a78bfa);
  animation: spin 10s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.avatar {
  position: absolute; inset: 5px;
  border-radius: 50%;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  font-size: 38px; font-weight: 800; color: transparent;
  background-image: var(--grad);
  -webkit-background-clip: text; background-clip: text;
}
.name {
  font-size: 32px; font-weight: 800; letter-spacing: -0.025em;
  margin: 0 0 4px;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.dot-pulse { display: inline-block; animation: pulse 2s ease-in-out infinite; }
.handle { margin: 0 0 14px; color: var(--text-faint); font-size: 13px; font-family: var(--mono); }
.bio { margin: 0; color: var(--text-dim); font-size: 14.5px; max-width: 340px; margin-left: auto; margin-right: auto; }

/* Links */
.links { display: grid; gap: 10px; position: relative; z-index: 1; }
.link {
  display: grid; grid-template-columns: 32px 1fr 16px;
  gap: 14px; align-items: center;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: all 0.2s ease;
}
.link:hover {
  border-color: var(--border-strong);
  transform: translateY(-1px);
  background: rgba(255,255,255,0.04);
}
:root.light .link:hover { background: rgba(0,0,0,0.03); }
.link-dot {
  width: 32px; height: 32px; border-radius: 8px;
  background: color-mix(in srgb, var(--c) 12%, transparent);
  color: var(--c);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700;
}
.link-text { display: flex; flex-direction: column; }
.link-text strong { font-size: 14.5px; font-weight: 600; color: var(--text); }
.link-text span { font-size: 12.5px; color: var(--text-faint); margin-top: 1px; }
.link-arrow { color: var(--text-faint); transition: transform 0.2s ease, color 0.2s ease; }
.link:hover .link-arrow { color: var(--accent); transform: translateX(2px); }

/* Projects */
.projects { margin-top: 24px; position: relative; z-index: 1; }
.projects-title {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--text-faint);
  margin: 0 0 12px;
}
.project-grid { display: grid; gap: 10px; }
.project {
  display: grid; grid-template-columns: 40px 1fr; gap: 14px;
  padding: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: 0.2s ease;
}
.project:hover { border-color: var(--border-strong); }
.p-emoji {
  width: 40px; height: 40px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700; color: #fff;
}
.project strong { display: block; font-size: 14.5px; font-weight: 600; margin-bottom: 2px; }
.project p { margin: 0 0 6px; color: var(--text-dim); font-size: 13px; }
.p-meta {
  font-family: var(--mono); font-size: 11px;
  padding: 2px 8px; background: rgba(167,139,250,0.12);
  color: var(--accent); border-radius: 6px;
}

/* Card footer */
.card-foot {
  margin-top: 22px; padding-top: 18px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: center; gap: 8px; align-items: center;
  font-size: 12.5px; color: var(--text-faint);
  position: relative; z-index: 1;
}
.card-foot a { color: var(--accent); }
.card-foot a:hover { text-decoration: underline; }

.ambient {
  font-family: var(--mono); font-size: 11px;
  color: var(--text-faint); letter-spacing: 0.1em;
  text-transform: uppercase; margin: 0;
}

/* Reveal */
.reveal {
  opacity: 0; transform: translateY(8px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 520px) {
  body { padding: 20px 12px; }
  .card { padding: 22px 20px 18px; border-radius: 22px; }
  .name { font-size: 26px; }
  .avatar-wrap { width: 72px; height: 72px; margin-bottom: 14px; }
  .avatar { font-size: 32px; }
}