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

:root {
    --primary-color: #2563eb;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
}

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* 헤더 */
header {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 32px;
    margin-bottom: 8px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 12px;
}

.status-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--success-color);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* 손익 요약 */
.pnl-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.pnl-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.pnl-card.total {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: white;
}

.pnl-card h3 {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 12px;
    opacity: 0.9;
}

.pnl-value {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
}

.pnl-percent {
    font-size: 16px;
    font-weight: 500;
}

.pnl-value.profit {
    color: var(--danger-color);
}

.pnl-value.loss {
    color: var(--primary-color);
}

.pnl-card.total .pnl-value,
.pnl-card.total .pnl-percent {
    color: white;
}

/* 자산 섹션 */
.assets-section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 24px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 20px;
}

/* 테이블 */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--bg-color);
    font-weight: 600;
    font-size: 14px;
    color: var(--text-secondary);
}

td {
    font-size: 14px;
}

.numeric {
    text-align: right;
}

td input {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
}

td input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.price-up {
    color: var(--danger-color);
}

.price-down {
    color: var(--primary-color);
}

/* 버튼 */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: #1e40af;
}

.btn-secondary {
    background-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: #cbd5e1;
}

/* 모달 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--card-bg);
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 20px;
}

.close {
    font-size: 28px;
    font-weight: 300;
    cursor: pointer;
    color: var(--text-secondary);
}

.close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.setting-group {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.setting-group:last-child {
    border-bottom: none;
}

.setting-group h3 {
    font-size: 16px;
    margin-bottom: 16px;
}

.setting-group label {
    display: block;
    margin-bottom: 12px;
}

.setting-group input[type="checkbox"] {
    margin-right: 8px;
}

.setting-group input[type="number"] {
    width: 120px;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-left: 8px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
}

/* 푸터 */
footer {
    text-align: center;
    padding: 24px;
    color: var(--text-secondary);
}

footer p {
    margin-top: 12px;
    font-size: 14px;
}

/* 반응형 */
@media (max-width: 768px) {
    .container {
        padding: 12px;
    }

    header h1 {
        font-size: 24px;
    }

    .pnl-summary {
        grid-template-columns: 1fr;
    }

    table {
        font-size: 12px;
    }

    th, td {
        padding: 8px;
    }
}