:root {
    --app-blue: #1d4ed8;
    --app-blue-dark: #173ea6;
    --app-aqua: #16c7b8;
    --app-aqua-soft: #d8fbf6;
    --app-ink: #122033;
    --app-muted: #64748b;
    --app-border: #dbe7f3;
    --app-bg: #f5faff;
}

.app-body {
    min-height: 100vh;
    color: var(--app-ink);
    background:
        linear-gradient(180deg, rgba(22, 199, 184, 0.11), rgba(255, 255, 255, 0) 310px),
        var(--app-bg);
}

.app-main {
    padding-top: 32px;
    padding-bottom: 48px;
}

.site-header .navbar {
    box-shadow: 0 10px 30px rgba(29, 78, 216, 0.06);
}

.navbar-brand {
    letter-spacing: 0;
}

.btn-primary {
    --bs-btn-bg: var(--app-blue);
    --bs-btn-border-color: var(--app-blue);
    --bs-btn-hover-bg: var(--app-blue-dark);
    --bs-btn-hover-border-color: var(--app-blue-dark);
}

.btn-outline-primary {
    --bs-btn-color: var(--app-blue);
    --bs-btn-border-color: #9bbcf6;
    --bs-btn-hover-bg: var(--app-blue);
    --bs-btn-hover-border-color: var(--app-blue);
}

.text-primary {
    color: var(--app-blue) !important;
}

.text-bg-primary-subtle {
    background: #eaf2ff !important;
}

.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 6px;
    color: var(--app-blue);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-section {
    color: #ffffff;
    background:
        linear-gradient(135deg, rgba(29, 78, 216, 0.96), rgba(22, 199, 184, 0.78)),
        #1d4ed8;
}

.hero-content {
    max-width: 780px;
    padding: clamp(40px, 8vw, 88px);
}

.feature-card,
.app-panel,
.metric-card,
.auth-card,
.error-card,
.empty-state {
    border: 1px solid var(--app-border);
    border-radius: 16px;
    background: #ffffff;
    box-shadow: 0 18px 45px rgba(29, 78, 216, 0.07);
}

.feature-card,
.app-panel,
.auth-card,
.error-card,
.empty-state {
    padding: 24px;
}

.feature-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    margin-bottom: 18px;
    border-radius: 12px;
    color: var(--app-blue);
    background: var(--app-aqua-soft);
    font-weight: 800;
}

.auth-shell,
.form-shell,
.error-page {
    display: grid;
    place-items: start center;
}

.auth-card,
.form-shell .app-panel,
.error-card {
    width: min(100%, 760px);
}

.auth-card {
    max-width: 460px;
}

.form-control,
.form-select {
    border-color: #c9d8ea;
    border-radius: 10px;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--app-aqua);
    box-shadow: 0 0 0 0.25rem rgba(22, 199, 184, 0.18);
}

.lookup-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.lookup-status {
    color: var(--app-muted);
}

.lookup-status[data-type="success"] {
    color: #0f766e;
}

.lookup-status[data-type="error"] {
    color: #b42318;
}

.lookup-status[data-type="loading"] {
    color: var(--app-blue);
}

.metric-card {
    display: grid;
    gap: 4px;
    height: 100%;
    padding: 20px;
    border-radius: 14px;
}

.metric-card span,
.comparison-item span,
.preview-item span {
    color: var(--app-muted);
    font-size: 14px;
}

.metric-card strong {
    color: var(--app-blue);
    font-size: clamp(26px, 4vw, 36px);
    line-height: 1;
}

.metric-card small,
.comparison-item small {
    color: #0f766e;
    font-weight: 700;
}

.comparison-item,
.preview-item {
    display: grid;
    gap: 6px;
    height: 100%;
    padding: 16px;
    border: 1px solid #e6eef8;
    border-radius: 12px;
    background: #fbfdff;
}

.preview-item strong,
.comparison-item strong {
    font-size: 16px;
}

.app-table {
    overflow: hidden;
    border: 1px solid var(--app-border);
    border-radius: 16px;
    background: #ffffff;
    box-shadow: 0 18px 45px rgba(29, 78, 216, 0.06);
}

.app-table .table thead th {
    color: #51627a;
    background: #f7fbff;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.app-table .table td,
.app-table .table th {
    padding: 14px 16px;
    white-space: nowrap;
}

.app-table .table td:last-child,
.app-table .table th:last-child {
    width: 1%;
}

.action-menu {
    min-width: 190px;
}

.action-menu .dropdown-item:disabled {
    color: #94a3b8;
    pointer-events: none;
}

.pagination-nav {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 18px;
}

.empty-state {
    border-style: dashed;
    background: rgba(255, 255, 255, 0.84);
}

.list-group-item {
    border-color: #e6eef8;
}

.site-footer {
    margin-top: auto;
}

@media (max-width: 768px) {
    .page-header {
        display: grid;
    }

    .hero-content,
    .feature-card,
    .app-panel,
    .auth-card,
    .error-card,
    .empty-state {
        padding: 20px;
    }
}