:root {
    --app-bg: #f5f7fb;
    --panel-bg: #ffffff;
    --line-color: #dee2e6;
    --brand-color: #0d6efd;
    --soft-text: #6c757d;
    --good-bg: #edf8f1;
    --warn-bg: #fff4e5;
    --shadow-soft: 0 10px 30px rgba(13, 110, 253, 0.06);
}

body {
    background: linear-gradient(180deg, #f8f9fb 0%, #eef3f8 100%);
    color: #1f2937;
    min-height: 100vh;
}

.app-navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.language-switcher {
    min-width: 140px;
}

.hero-panel,
.tool-panel,
.compare-panel,
.data-panel {
    background: var(--panel-bg);
    border: 1px solid rgba(222, 226, 230, 0.9);
    border-radius: 18px;
    box-shadow: var(--shadow-soft);
    padding: 1.25rem;
}

.hero-title {
    font-size: clamp(1.7rem, 3vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    color: var(--soft-text);
    font-size: 1rem;
}

.hero-note {
    background: #f8fafc;
    border: 1px solid #e9ecef;
    border-radius: 14px;
    padding: 1rem;
}

.panel-title-row {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 1rem;
    flex-wrap: wrap;
}

.panel-title {
    font-size: 1.1rem;
    font-weight: 700;
}

.active-view-btn {
    color: #fff;
    background-color: #212529;
}

.data-table-wrap {
    overflow-x: auto;
}

.table thead th {
    white-space: nowrap;
    background: #f8fafc;
}

.req-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.45rem 0.65rem;
    border-radius: 999px;
    border: 1px solid #dfe8ff;
    background: #f5f9ff;
    font-size: 0.88rem;
    margin: 0.2rem 0.2rem 0 0;
    white-space: nowrap;
}

.req-list {
    display: flex;
    flex-wrap: wrap;
}

.status-badge {
    display: inline-block;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 600;
}

.status-good {
    background: var(--good-bg);
    color: #137333;
}

.status-warn {
    background: var(--warn-bg);
    color: #9a6700;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.hq-card {
    border: 1px solid #e9ecef;
    border-radius: 18px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 10px 24px rgba(16, 24, 40, 0.05);
}

.hq-card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1rem 0.85rem;
    background: linear-gradient(135deg, #0d6efd 0%, #4dabf7 100%);
    color: #fff;
}

.hq-card-head h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 800;
}

.hq-card-body {
    padding: 1rem;
}

.note-list,
.source-list {
    margin: 0;
    padding-left: 1.15rem;
}

.compare-box {
    border: 1px solid #d7ebdc;
    background: #f4fbf6;
    border-radius: 16px;
    padding: 1rem;
}

.compare-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.copy-btn {
    white-space: nowrap;
}

.empty-panel {
    border: 1px dashed #cbd5e1;
    border-radius: 16px;
    padding: 2rem 1rem;
    text-align: center;
    color: var(--soft-text);
    background: #fbfcfe;
}

@media (max-width: 991.98px) {
    .card-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-panel,
    .tool-panel,
    .compare-panel,
    .data-panel {
        padding: 1rem;
        border-radius: 16px;
    }

    .data-table-wrap {
        display: none;
    }

    #cardView {
        display: block !important;
    }

    #tableView.force-show {
        display: block;
    }

    .req-badge {
        display: flex;
        width: 100%;
        justify-content: space-between;
        border-radius: 12px;
        margin-right: 0;
    }
}