body {
    background:
        radial-gradient(circle at top right, rgba(217, 101, 120, 0.16), transparent 30%),
        linear-gradient(180deg, var(--light-color) 0%, var(--white) 24%, var(--lighter-color) 100%);
}

.catalog-page {
    width: min(var(--page-max-width), calc(100% - 2rem));
    margin: 0 auto;
    padding: 2rem 0 4rem;
}

.intro-panel,
.audience-panel,
.security-panel {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
}

.intro-panel {
    padding: 1.75rem;
    margin-bottom: 1.5rem;
}

.intro-panel h2,
.audience-header h2,
.security-header h2 {
    font-size: clamp(1.6rem, 2.4vw, 2.2rem);
    line-height: 1.2;
    margin-bottom: 0.8rem;
}

.intro-text,
.audience-intro,
.security-header p {
    color: var(--gray-color);
    max-width: 72ch;
}

.phase-tabs-section {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem 1.75rem;
    margin-bottom: 2rem;
}

.phase-tabs-header {
    margin-bottom: 1rem;
}

.phase-tabs-header h2 {
    font-size: 1.4rem;
}

.phase-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.phase-tab,
.audience-tag,
.group-tag {
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 700;
}

.phase-tab {
    background: rgba(191, 66, 84, 0.1);
    color: var(--primary-dark);
    padding: 0.75rem 1rem;
    border: 1px solid transparent;
}

.phase-tab:hover,
.phase-tab:focus-visible {
    background: rgba(191, 66, 84, 0.16);
    border-color: rgba(191, 66, 84, 0.35);
}

.phase-tab.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

#phase-panel {
    display: grid;
    gap: 2rem;
}

.audience-section,
.security-section {
    margin-top: 2rem;
}

.audience-panel,
.security-panel {
    padding: 1.75rem;
}

.audience-header,
.security-header {
    margin-bottom: 1.5rem;
}

.audience-tag {
    display: inline-block;
    background: var(--dark-color);
    color: var(--white);
    padding: 0.45rem 0.8rem;
    margin-bottom: 0.9rem;
}

.phase-grid,
.security-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 1rem;
}

.phase-card,
.security-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(238, 242, 248, 0.92) 100%);
    border: 1px solid rgba(180, 185, 193, 0.45);
    border-radius: 18px;
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
}

.phase-card-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.phase-card-header h3,
.security-card h3 {
    font-size: 1.15rem;
    line-height: 1.3;
}

.measure-count {
    color: var(--gray-color);
    font-size: 0.9rem;
    font-weight: 600;
}

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

.measure-group {
    min-width: 0;
}

.group-tag {
    display: inline-block;
    padding: 0.35rem 0.7rem;
    margin-bottom: 0.75rem;
}

.group-tag.social {
    background: rgba(46, 125, 50, 0.12);
    color: var(--success-color);
}

.group-tag.technical {
    background: rgba(245, 124, 0, 0.12);
    color: #9b5d00;
}

.measure-list {
    list-style: none;
    display: grid;
    gap: 0.7rem;
}

.measure-list li {
    position: relative;
    padding-left: 1rem;
    color: var(--dark-color);
}

.measure-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.62rem;
    width: 0.38rem;
    height: 0.38rem;
    border-radius: 50%;
    background: var(--primary-color);
}

.catalog-resource-link {
    color: var(--primary-dark);
    font-weight: 700;
    text-decoration-thickness: 2px;
    text-underline-offset: 0.12em;
}

.catalog-resource-link:hover,
.catalog-resource-link:focus-visible {
    color: var(--primary-color);
}

.measure-list.empty li {
    color: var(--gray-color);
    font-style: italic;
}

.measure-list.empty li::before {
    background: var(--gray-light);
}

@media (max-width: 960px) {
    .intro-panel,
    .phase-grid,
    .security-grid,
    .measure-groups {
        grid-template-columns: 1fr;
    }

    .phase-tabs {
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    header h1 {
        font-size: 2rem;
    }

    .catalog-page {
        width: min(100% - 1rem, 1180px);
        padding: 1rem 0 3rem;
    }

    .intro-panel,
    .audience-panel,
    .security-panel,
    .phase-card,
    .security-card {
        padding: 1.1rem;
    }

    .phase-card-header {
        align-items: flex-start;
    }
}

/* ============================================
   Footnote references and sources section
   ============================================ */
.fn-ref {
    color: var(--primary-dark);
    text-decoration: none;
    font-weight: 600;
}

.fn-ref:hover {
    text-decoration: underline;
}

.fn-refs {
    font-size: 0.75em;
    vertical-align: super;
    line-height: 1;
    margin-left: 0.1em;
    white-space: nowrap;
}

.sources-section {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem 1.75rem;
    margin-top: 2rem;
}

.sources-section h2 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--gray-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.sources-list {
    list-style: none;
    display: grid;
    gap: 0.5rem;
    padding: 0;
}

.sources-list li {
    font-size: 0.88rem;
    display: flex;
    gap: 0.5rem;
    align-items: baseline;
}

.sources-list li::before {
    content: attr(data-fn);
    font-size: 0.78em;
    font-weight: 700;
    color: var(--primary-dark);
    flex: 0 0 auto;
}

.sources-list a {
    color: var(--primary-dark);
    word-break: break-all;
}

.sources-list a:hover {
    color: var(--primary-color);
}