:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-main: #f8fafc;
    --text-sub: #94a3b8;
    --accent: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.5);
    --success: #10b981;
    --warning: #f59e0b;
    --border: #334155;
}

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

body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.app-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    text-align: center;
    padding: 30px 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
}

.logo h1 {
    font-size: 2.2rem;
    font-weight: 900;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.sparkle {
    font-size: 1.8rem;
    animation: float 3s ease-in-out infinite;
}

.subtitle {
    color: var(--text-sub);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 10px;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-sub);
    font-size: 1rem;
    font-weight: 700;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 8px;
    transition: 0.2s;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: var(--text-main);
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-bottom: none;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Main Content */
.main-content {
    flex: 1;
}

.panel {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 24px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.panel-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
}

.status-badge, .info-badge {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
}

.info-badge {
    background: rgba(59, 130, 246, 0.1);
    color: #60a5fa;
}

.status-badge::before {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
}

/* Cards Container */
.cards-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Stock Card */
.stock-card {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.stock-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    border-color: var(--accent);
}

.stock-card.best-pick {
    background: linear-gradient(145deg, rgba(59, 130, 246, 0.1), rgba(15, 23, 42, 0.5));
    border: 1px solid var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.ticker-group {
    display: flex;
    flex-direction: column;
}

.ticker {
    color: var(--text-sub);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.name {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-main);
}

.price-group {
    text-align: right;
}

.price {
    font-size: 1.4rem;
    font-weight: 900;
    color: var(--text-main);
}

.target-info {
    font-size: 0.85rem;
    color: var(--text-sub);
    margin-top: 8px;
    display: flex;
    gap: 15px;
    font-weight: 600;
}

.target-tp { color: var(--success); }
.target-sl { color: var(--warning); }

.reason-box {
    background: rgba(59, 130, 246, 0.1);
    color: #60a5fa;
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    border-left: 3px solid var(--accent);
}

/* Empty / Loading State */
.empty-state, .loading-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-sub);
    font-weight: 600;
}

.spinner {
    width: 30px;
    height: 30px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin 1s ease-in-out infinite;
    margin: 0 auto 16px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-bottom: 30px;
}

.stat-box {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border);
    padding: 15px;
    border-radius: 12px;
    text-align: center;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-sub);
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-value {
    font-size: 1.4rem;
    font-weight: 900;
}

.stat-value.highlight { color: var(--accent); }
.stat-value.win { color: var(--success); }
.stat-value.loss { color: var(--warning); }
.stat-value.draw { color: #cbd5e1; }

/* Tracker Lists */
.tracker-lists h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px dashed var(--border);
    color: #e2e8f0;
}

.mt-4 {
    margin-top: 30px;
}

.list-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.track-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
    padding: 12px 16px;
    border-radius: 8px;
    border-left: 4px solid var(--border);
    font-size: 0.9rem;
}

.track-item.active { border-left-color: var(--accent); }
.track-item.win { border-left-color: var(--success); }
.track-item.loss { border-left-color: var(--warning); }
.track-item.draw { border-left-color: #94a3b8; }

.track-left {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.track-right {
    text-align: right;
    font-weight: 700;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.track-status-text {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 10px;
    background: rgba(255,255,255,0.1);
    margin-top: 4px;
}

.track-status-text.win { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.track-status-text.loss { background: rgba(245, 158, 11, 0.2); color: var(--warning); }

.track-ticker {
    color: var(--text-sub);
    font-size: 0.8rem;
}

.track-name {
    font-weight: 700;
}

.empty-text {
    color: var(--text-sub);
    font-size: 0.9rem;
    text-align: center;
    padding: 20px;
}

/* Footer */
footer {
    text-align: center;
    padding: 30px 0;
    color: var(--text-sub);
    font-size: 0.8rem;
}

/* Animations */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

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

/* Responsive */
@media (max-width: 600px) {
    .app-container {
        padding: 15px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}