:root {
    --bg: #0f1117;
    --card: #1a1d29;
    --border: #2a2d3a;
    --text: #e1e4ea;
    --text-dim: #8b8fa3;
    --accent: #6c5ce7;
    --green: #00b894;
    --red: #d63031;
    --yellow: #fdcb6e;
    --blue: #0984e3;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

/* ── 네비게이션 ── */
nav {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    height: 60px;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav .logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent);
    text-decoration: none;
    margin-right: 2rem;
}

nav .search-box {
    flex: 1;
    max-width: 400px;
}

nav .search-box input {
    width: 100%;
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 0.9rem;
    outline: none;
}

nav .search-box input:focus {
    border-color: var(--accent);
}

nav .nav-links {
    margin-left: auto;
    display: flex;
    gap: 1.5rem;
}

nav .nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

nav .nav-links a:hover { color: var(--text); }

/* ── 레이아웃 ── */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
}

/* ── 카드 ── */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
}

.card h2 {
    font-size: 1rem;
    color: var(--text-dim);
    margin-bottom: 1rem;
    font-weight: 500;
}

.card .value {
    font-size: 2rem;
    font-weight: 700;
}

.card .sub {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-top: 0.3rem;
}

/* ── 점수 ── */
.score-box {
    display: flex;
    gap: 2rem;
    align-items: center;
    padding: 1.5rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.score-item {
    text-align: center;
}

.score-item .label {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 0.3rem;
}

.score-item .number {
    font-size: 2.5rem;
    font-weight: 700;
}

.score-item .number.buy { color: var(--green); }
.score-item .number.sell { color: var(--red); }

.score-detail {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-top: 0.5rem;
}

/* ── 테이블 ── */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    text-align: left;
    padding: 0.7rem 0.5rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 0.8rem;
    font-weight: 500;
}

.data-table td {
    padding: 0.7rem 0.5rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.data-table tr:hover {
    background: rgba(108, 92, 231, 0.05);
}

.data-table a {
    color: var(--text);
    text-decoration: none;
}

.data-table a:hover { color: var(--accent); }

.up { color: var(--red); }
.down { color: var(--blue); }
.neutral { color: var(--text-dim); }

/* ── 시그널 ── */
.signal {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.signal.buy { background: rgba(0, 184, 148, 0.15); color: var(--green); }
.signal.sell { background: rgba(214, 48, 49, 0.15); color: var(--red); }
.signal.hold { background: rgba(253, 203, 110, 0.15); color: var(--yellow); }

/* ── 로딩 ── */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-dim);
}

.spinner {
    display: inline-block;
    width: 30px;
    height: 30px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── 반응형 ── */
@media (max-width: 768px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .score-box { flex-direction: column; gap: 1rem; }
    nav { padding: 0 1rem; }
    .container { padding: 1rem; }
}