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

:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #888888;
  --pale: #f5f5f5;
  --yellow: #e6b422;
  --accent: #d77757;
  --radius: 8px;
}

body {
  font-family: "Helvetica Neue", "PingFang SC", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
}

/* === Nav === */
nav {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 18px 36px;
  font-size: 15px;
  border-bottom: 1px solid var(--pale);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}
nav a {
  text-decoration: none;
  color: var(--fg);
  letter-spacing: 0.02em;
}
nav a:hover { color: var(--accent); }
.nav-sep { color: #ccc; margin: 0 10px; user-select: none; }
.brand { font-weight: 700; font-size: 17px; margin-right: 4px; }
.nav-right { margin-left: auto; display: flex; gap: 10px; }

.btn-text {
  background: none; border: none; color: var(--fg);
  font-size: 14px; cursor: pointer; letter-spacing: 0.02em;
}
.btn-text:hover { color: var(--accent); }
.btn-outline {
  background: none; border: 1.5px solid var(--fg); color: var(--fg);
  padding: 5px 16px; border-radius: 20px; font-size: 14px;
  cursor: pointer; letter-spacing: 0.02em;
}
.btn-outline:hover { background: var(--fg); color: var(--bg); }

/* === Main === */
main { max-width: 820px; margin: 0 auto; padding: 48px 24px 120px; }

/* === Profile === */
.profile-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 56px;
}
.profile-header .name {
  font-size: 42px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
}
.profile-header .subtitle {
  font-size: 17px;
  color: var(--muted);
  margin-top: 8px;
  letter-spacing: 0.02em;
}
.profile-header .avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.section-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 16px;
  margin-top: 48px;
}
.section-body {
  line-height: 1.8;
  color: #333;
  max-width: 640px;
}

/* Education */
.edu-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
}
.edu-row + .edu-row { border-top: 1px solid var(--pale); }
.edu-row img {
  width: 40px; height: 40px;
  border-radius: 6px; object-fit: contain;
}
.edu-row .school { font-weight: 600; font-size: 16px; }
.edu-row .years { color: var(--muted); font-size: 14px; margin-top: 2px; }

/* === Essays === */
.back-link {
  display: inline-block;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 32px;
}
.back-link:hover { color: var(--fg); }

.essay-row {
  padding: 16px 0;
  display: flex;
  align-items: baseline;
  gap: 24px;
}
.essay-row + .essay-row { border-top: 1px solid var(--pale); }
.essay-row .date {
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
  min-width: 100px;
}
.essay-row .essay-link {
  color: var(--fg);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.5;
}
.essay-row .essay-link:hover { color: var(--accent); }

.essay-article {
  max-width: 680px;
  margin: 0 auto;
}
.essay-article h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}
.essay-article .date-big {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 36px;
}
.essay-article .body {
  line-height: 2;
  font-size: 16px;
}

/* === Projects === */
.project-card {
  border: 1px solid var(--pale);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
}
.project-card .proj-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}
.project-card .proj-desc {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 12px;
}
.project-card .proj-actions {
  display: none;
  gap: 12px;
  margin-top: 12px;
}
.project-card.open .proj-actions { display: flex; }
.proj-card-btn {
  display: inline-block;
  padding: 6px 18px;
  border: 1.5px solid var(--fg);
  border-radius: 20px;
  text-decoration: none;
  color: var(--fg);
  font-size: 13px;
  letter-spacing: 0.02em;
}
.proj-card-btn:hover { background: var(--fg); color: var(--bg); }

/* === Portfolio === */
.portfolio-container { position: relative; min-height: 500px; }

.star-field {
  position: relative;
  width: 100%;
  min-height: 460px;
}
.star {
  position: absolute;
  width: 30px;
  height: 30px;
  background: var(--yellow);
  transform: rotate(45deg);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  border-radius: 3px;
}
.star:hover {
  transform: rotate(45deg) scale(1.15);
  box-shadow: 0 0 18px rgba(230, 180, 34, 0.6);
}

.portfolio-divider {
  text-align: center;
  margin-top: 64px;
  padding-top: 32px;
}
.portfolio-divider .line {
  display: inline-block;
  width: 40%;
  border-top: 1.5px solid #ddd;
  vertical-align: middle;
}
.portfolio-divider .label {
  display: inline-block;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin: 0 16px;
  vertical-align: middle;
  cursor: pointer;
  color: var(--fg);
}
.portfolio-divider .label:hover { color: var(--accent); }

/* History table */
.history-panel {
  margin-top: 48px;
  display: none;
}
.history-panel.open { display: block; }
.history-panel h2 {
  font-size: 22px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 28px;
  letter-spacing: 0.04em;
}
.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.history-table th {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 2px solid var(--fg);
  font-weight: 600;
  letter-spacing: 0.03em;
}
.history-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--pale);
}
.history-table .up { color: #16a34a; }
.history-table .down { color: #dc2626; }

/* Star detail popup */
.star-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  border: 1px solid #ddd;
  border-radius: var(--radius);
  padding: 28px;
  min-width: 300px;
  z-index: 200;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}
.star-popup h3 { font-size: 20px; margin-bottom: 12px; }
.star-popup .detail { font-size: 14px; color: var(--muted); line-height: 2; }
.star-popup .close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--muted);
}
.star-popup .close:hover { color: var(--fg); }

/* === Adventures === */
.adventure-gate {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.game-preview {
  text-align: center;
  line-height: 2;
  font-size: 15px;
  color: #333;
}

.blur-overlay {
  position: absolute;
  inset: 0;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  z-index: 10;
}
.blur-overlay .blocked-text {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: #444;
  text-align: center;
}

.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px,1fr));
  gap: 20px;
}
.game-card {
  border: 1px solid var(--pale);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s;
}
.game-card:hover { border-color: var(--accent); }
.game-card h3 { font-size: 18px; margin-bottom: 6px; }
.game-card p { font-size: 13px; color: var(--muted); }

/* === Modal === */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-box {
  background: white;
  border-radius: var(--radius);
  padding: 32px;
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.hidden { display: none; }

/* === Responsive === */
@media (max-width: 640px) {
  nav { padding: 14px 16px; font-size: 13px; gap: 0; }
  .brand { font-size: 15px; }
  .nav-sep { margin: 0 6px; }
  .nav-right { gap: 6px; }
  main { padding: 32px 16px 80px; }
  .profile-header { flex-direction: column-reverse; text-align: center; gap: 24px; }
  .profile-header .name { font-size: 32px; }
  .profile-header .avatar { width: 110px; height: 110px; }
  .essay-row { flex-direction: column; gap: 4px; }
  .portfolio-divider .line { width: 25%; }
}