:root {
  --bg: #0f1115;
  --panel: #181b22;
  --panel-2: #1f232c;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --muted: #9aa3b2;
  --up: #ff4d4f;     /* 한국식: 상승=빨강 */
  --down: #3b82f6;   /* 한국식: 하락=파랑 */
  --accent: #6366f1;
  --accent-2: #818cf8;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Pretendard", -apple-system, "Segoe UI", "Malgun Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Navbar */
.navbar { background: var(--panel); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.nav-inner { max-width: 1080px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; }
.brand { font-size: 20px; font-weight: 800; color: var(--text); }
.nav-links { display: flex; align-items: center; gap: 18px; }
.nav-links a { color: var(--muted); font-size: 15px; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-user { color: var(--text); font-weight: 600; }

.container { max-width: 1080px; margin: 0 auto; padding: 28px 20px 60px; }

/* Hero */
.hero { padding: 24px 0 8px; }
.hero h1 { font-size: 30px; margin: 0 0 6px; }
.hero p { color: var(--muted); margin: 0; }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 24px 0; }
.stat-card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 18px; display: flex; flex-direction: column; gap: 6px; }
.stat-label { color: var(--muted); font-size: 13px; }
.stat-value { font-size: 24px; font-weight: 800; }
.stat-card.up .stat-value { color: var(--up); }
.stat-card.down .stat-value { color: var(--down); }

/* Charts */
.charts { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 24px 0; }
.chart-box { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.chart-box h2 { font-size: 16px; margin: 0 0 14px; }

/* Sections */
.section-head { display: flex; align-items: center; justify-content: space-between; margin: 28px 0 14px; }
.section-head h1, .section-head h2 { margin: 0; }

/* Trade cards */
.trade-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.trade-card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 16px; display: flex; flex-direction: column; gap: 10px; color: var(--text); transition: border-color .15s, transform .15s; }
.trade-card:hover { border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.tc-head { display: flex; justify-content: space-between; align-items: center; }
.tc-name { font-weight: 700; font-size: 17px; }
.tc-body { display: flex; flex-direction: column; gap: 2px; }
.tc-profit { font-size: 20px; font-weight: 800; }
.tc-profit.up { color: var(--up); }
.tc-profit.down { color: var(--down); }
.tc-meta { color: var(--muted); font-size: 13px; }
.tc-foot { color: var(--muted); font-size: 13px; border-top: 1px solid var(--border); padding-top: 8px; }

.badge { padding: 3px 10px; border-radius: 999px; font-size: 13px; font-weight: 700; }
.badge.up { background: rgba(255,77,79,.15); color: var(--up); }
.badge.down { background: rgba(59,130,246,.15); color: var(--down); }
.badge.hold { background: rgba(154,163,178,.15); color: var(--muted); }

/* Detail */
.detail { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 28px; }
.detail-head { display: flex; justify-content: space-between; align-items: flex-start; }
.detail-head h1 { margin: 0; }
.ticker { color: var(--muted); font-size: 16px; font-weight: 500; }
.detail-meta { color: var(--muted); margin: 4px 0 0; }
.big-badge { font-size: 22px; font-weight: 800; padding: 8px 16px; border-radius: 12px; }
.big-badge.up { background: rgba(255,77,79,.15); color: var(--up); }
.big-badge.down { background: rgba(59,130,246,.15); color: var(--down); }
.big-badge.hold { background: rgba(154,163,178,.15); color: var(--muted); }
.detail-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 24px 0; }
.detail-grid > div { background: var(--panel-2); border-radius: 10px; padding: 12px 14px; display: flex; flex-direction: column; gap: 4px; }
.dg-label { color: var(--muted); font-size: 13px; }
.dg-value { font-size: 18px; font-weight: 700; }
.dg-value.up { color: var(--up); }
.dg-value.down { color: var(--down); }
.memo { margin-top: 8px; }
.memo h3 { margin: 0 0 6px; }
.memo p { color: var(--text); background: var(--panel-2); padding: 14px; border-radius: 10px; }

.detail-actions { display: flex; gap: 10px; align-items: center; margin-top: 20px; }
.like-btn { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); padding: 8px 16px; border-radius: 999px; cursor: pointer; font-size: 15px; }
.like-btn.liked { background: rgba(255,77,79,.15); border-color: var(--up); color: var(--up); }

/* Comments */
.comments { margin-top: 28px; background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 24px; }
.comments h3 { margin-top: 0; }
.comment-form { display: flex; gap: 10px; margin-bottom: 18px; }
.comment-form textarea { flex: 1; }
.comment-list { list-style: none; padding: 0; margin: 0; }
.comment-list li { border-top: 1px solid var(--border); padding: 14px 0; }
.comment-meta { display: flex; gap: 10px; align-items: center; color: var(--muted); font-size: 13px; }
.comment-meta strong { color: var(--text); }
.comment-list p { margin: 6px 0; }

/* Forms */
.form-wrap { max-width: 640px; margin: 0 auto; background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 28px; }
.form-wrap.narrow { max-width: 420px; }
.form-wrap h1 { margin-top: 0; }
.styled-form .form-row { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.styled-form label { font-weight: 600; font-size: 14px; }
.styled-form input, .styled-form textarea, .comment-form textarea {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 10px 12px; border-radius: 10px; font-size: 15px; font-family: inherit; width: 100%;
}
.styled-form input:focus, .styled-form textarea:focus { outline: none; border-color: var(--accent); }
.help { color: var(--muted); font-size: 12px; }
.field-error { color: var(--up); font-size: 13px; }
.form-actions { display: flex; gap: 10px; margin-top: 8px; }
.form-foot { color: var(--muted); margin-top: 16px; text-align: center; }

/* Buttons */
.btn-primary, .btn-secondary, .btn-danger {
  display: inline-block; padding: 10px 18px; border-radius: 10px; font-weight: 600;
  cursor: pointer; border: none; font-size: 15px; font-family: inherit;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-2); text-decoration: none; }
.btn-secondary { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: rgba(255,77,79,.15); color: var(--up); border: 1px solid var(--up); }
.btn-primary-sm { background: var(--accent); color: #fff; padding: 6px 14px; border-radius: 8px; }
.btn-primary-sm:hover { text-decoration: none; }
.link-btn { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 15px; font-family: inherit; padding: 0; }
.link-btn:hover { color: var(--text); }
.link-btn.small { font-size: 13px; }
.inline-form { display: inline; }

/* Misc */
.messages { margin-bottom: 18px; }
.alert { padding: 12px 16px; border-radius: 10px; margin-bottom: 10px; }
.alert-success { background: rgba(34,197,94,.15); color: #4ade80; }
.alert-error { background: rgba(255,77,79,.15); color: var(--up); }
.empty { color: var(--muted); }
.footer { border-top: 1px solid var(--border); padding: 24px; text-align: center; color: var(--muted); font-size: 14px; }

@media (max-width: 860px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .charts { grid-template-columns: 1fr; }
  .trade-cards { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: repeat(2, 1fr); }
}