:root {
    --bg-base: #f4f7fc;
    --grad-1: #5b7cfa;
    --grad-2: #8a6cf0;
    --grad-3: #f57ab1;
    --text-main: #1c2541;
    --text-sub: #4b5670;
    --text-mute: #8590a8;
    --card-bg: #ffffff;
    --card-border: #e4e9f3;
    --card-border-soft: #eef1f7;
    --field-bg: #ffffff;
    --field-border: #d8dfeb;
    --field-bg-soft: #f6f8fc;
    --accent: #4f6df3;
    --accent-hover: #3d5be5;
    --accent-soft: rgba(91, 124, 250, 0.12);
    --price: #1d2952;
    --danger: #e3334a;
    --shadow-sm: 0 2px 6px rgba(28, 37, 65, 0.05);
    --shadow-md: 0 8px 24px rgba(28, 37, 65, 0.07);
    --shadow-lg: 0 18px 40px rgba(28, 37, 65, 0.09);
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Apple SD Gothic Neo",
        "Noto Sans KR", "Malgun Gothic", "Segoe UI", Roboto, sans-serif;
    color: var(--text-main);
    background:
        radial-gradient(900px 500px at 5% -5%, rgba(91, 124, 250, 0.14), transparent 60%),
        radial-gradient(800px 450px at 95% 5%, rgba(138, 108, 240, 0.12), transparent 60%),
        radial-gradient(900px 500px at 50% 105%, rgba(245, 122, 177, 0.10), transparent 60%),
        var(--bg-base);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    line-height: 1.55;
}

.aurora {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(700px 350px at 80% 70%, rgba(91, 124, 250, 0.08), transparent 70%);
    z-index: 0;
}

.site-header {
    position: relative;
    z-index: 1;
    max-width: 1180px;
    margin: 0 auto;
    padding: 36px 28px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.brand-mark {
    width: 52px;
    height: 52px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    font-weight: 800;
    font-size: 18px;
    letter-spacing: 1px;
    background: linear-gradient(135deg, var(--grad-1), var(--grad-2) 60%, var(--grad-3));
    color: #fff;
    box-shadow: 0 10px 24px rgba(91, 124, 250, 0.30);
}

.brand-text h1 {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.3px;
    color: var(--text-main);
}

.brand-text p {
    margin: 4px 0 0;
    font-size: 13px;
    color: var(--text-sub);
}

.clock {
    text-align: right;
    padding: 12px 18px;
    border-radius: 14px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-sm);
    min-width: 200px;
}

.clock-date {
    font-size: 13px;
    color: var(--text-sub);
}

.clock-time {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 1.2px;
    font-variant-numeric: tabular-nums;
    margin-top: 2px;
    color: var(--text-main);
}

.container {
    position: relative;
    z-index: 1;
    max-width: 1180px;
    margin: 0 auto;
    padding: 12px 28px 60px;
    display: grid;
    gap: 22px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 24px 26px;
    box-shadow: var(--shadow-md);
}

.card h2 {
    margin: 0 0 16px;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.2px;
}

.search-form {
    display: grid;
    grid-template-columns: 1.2fr 1.2fr 1fr auto;
    gap: 14px;
    align-items: end;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

.field label {
    font-size: 12px;
    color: var(--text-sub);
    font-weight: 500;
    letter-spacing: 0.2px;
}

.field select,
.field input[type="month"] {
    appearance: none;
    -webkit-appearance: none;
    background: var(--field-bg);
    border: 1px solid var(--field-border);
    color: var(--text-main);
    border-radius: 10px;
    padding: 11px 14px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.field select:hover,
.field input[type="month"]:hover {
    border-color: #b9c4dd;
}

.field select:focus,
.field input[type="month"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.field select:disabled {
    background: var(--field-bg-soft);
    color: var(--text-mute);
    cursor: not-allowed;
}

.field select option {
    color: var(--text-main);
}

.field.action {
    align-self: end;
}

.field.action button {
    padding: 12px 24px;
    border-radius: 10px;
    border: none;
    color: white;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    background: linear-gradient(135deg, var(--grad-1), var(--grad-2) 75%, var(--grad-3));
    box-shadow: 0 8px 18px rgba(91, 124, 250, 0.30);
    transition: transform 0.1s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.field.action button:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(91, 124, 250, 0.36);
}

.field.action button:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.result-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.result-header h2 {
    margin: 0;
}

.result-meta {
    font-size: 13px;
    color: var(--text-sub);
}

.result-meta .meta-strong {
    color: var(--text-main);
    font-weight: 700;
}

.empty-state {
    text-align: center;
    padding: 50px 20px;
    color: var(--text-mute);
}

.empty-state .empty-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 12px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 22px;
    color: var(--text-sub);
    background: var(--field-bg-soft);
    border: 1px solid var(--card-border);
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-sub);
}

.loading .spinner {
    width: 36px;
    height: 36px;
    margin: 0 auto 14px;
    border: 3px solid #e4e9f3;
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

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

.error-box {
    padding: 16px 18px;
    background: #fff5f6;
    border: 1px solid #f9c5cd;
    border-radius: 12px;
    color: var(--danger);
    font-size: 14px;
}

.trade-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 14px;
}

.trade-card {
    padding: 18px 18px 14px;
    border-radius: 12px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.trade-card:hover {
    transform: translateY(-2px);
    border-color: #c8d2e8;
    box-shadow: var(--shadow-md);
}

.trade-card .apt-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.2px;
    word-break: keep-all;
}

.trade-card .location {
    font-size: 12px;
    color: var(--text-mute);
}

.trade-card .price {
    font-size: 22px;
    font-weight: 800;
    color: var(--price);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.4px;
    margin: 2px 0;
}

.trade-card .stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px 14px;
    font-size: 13px;
    background: var(--field-bg-soft);
    padding: 10px 12px;
    border-radius: 8px;
}

.trade-card .stats div {
    color: var(--text-sub);
}

.trade-card .stats div strong {
    color: var(--text-main);
    font-weight: 600;
    margin-left: 4px;
}

.trade-card .footer-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 8px;
    border-top: 1px dashed var(--card-border-soft);
    font-size: 12px;
    color: var(--text-mute);
}

.badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent-hover);
    border: 1px solid rgba(79, 109, 243, 0.22);
}

.badge.direct {
    background: rgba(245, 122, 177, 0.13);
    color: #c93b86;
    border-color: rgba(245, 122, 177, 0.28);
}

.badge.canceled {
    background: #fff0f1;
    color: var(--danger);
    border-color: #f7c3c9;
}

.pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid var(--card-border);
}

.page-btn {
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    border-radius: 10px;
    border: 1px solid var(--field-border);
    background: var(--card-bg);
    color: var(--text-main);
    font-size: 13px;
    font-weight: 500;
    font-family: inherit;
    font-variant-numeric: tabular-nums;
    cursor: pointer;
    transition: background 0.12s ease, border-color 0.12s ease,
        color 0.12s ease, box-shadow 0.12s ease;
}

.page-btn:hover:not(:disabled):not(.active) {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--accent-hover);
}

.page-btn.active {
    background: linear-gradient(135deg, var(--grad-1), var(--grad-2));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 6px 14px rgba(91, 124, 250, 0.30);
    cursor: default;
}

.page-btn.nav {
    font-size: 16px;
    color: var(--text-sub);
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.page-ellipsis {
    color: var(--text-mute);
    padding: 0 4px;
    user-select: none;
}

.site-footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 20px 24px 36px;
    color: var(--text-mute);
    font-size: 12px;
}

@media (max-width: 880px) {
    .search-form {
        grid-template-columns: 1fr 1fr;
    }
    .field.action {
        grid-column: 1 / -1;
    }
    .field.action button {
        width: 100%;
    }
}

@media (max-width: 520px) {
    .site-header {
        padding: 24px 18px 4px;
    }
    .container {
        padding: 12px 18px 40px;
    }
    .search-form {
        grid-template-columns: 1fr;
    }
    .brand-text h1 {
        font-size: 19px;
    }
    .clock {
        min-width: 0;
        width: 100%;
        text-align: left;
    }
}