:root {
    --page-bg: #f5f7fb;
    --ink: #111827;
    --muted: #667085;
    --soft-line: #e5e7eb;
    --accent: #315c4d;
    --accent-dark: #24473b;
    --card-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    background: var(--page-bg);
    color: var(--ink);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    line-height: 1.45;
}

.container {
    max-width: 1120px;
}

.container-narrow {
    max-width: 660px;
}

.site-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1.25rem;
}

.site-copy {
    max-width: 720px;
}

.header-actions {
    flex: 0 0 auto;
}

.home-nav {
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 800;
}

.home-nav-bottom {
    border-top: 1px solid var(--soft-line);
}

.home-link {
    color: var(--accent);
    text-decoration: none;
}

.home-link::before {
    content: "< ";
}

.home-link:hover {
    color: var(--accent-dark);
    text-decoration: underline;
    text-underline-offset: 0.2em;
}

.eyebrow {
    color: var(--accent);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.display-title {
    color: var(--ink);
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 800;
    letter-spacing: 0;
    line-height: 0.98;
}

.intro {
    color: #475467;
    font-size: 1.04rem;
    max-width: 720px;
}

.btn {
    border-radius: 8px;
    font-weight: 700;
}

.btn-sm {
    padding: 0.42rem 0.72rem;
}

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

.filters {
    display: grid;
    grid-template-columns: minmax(220px, 1fr) minmax(150px, 190px) minmax(130px, 160px) auto auto;
    gap: 0.55rem;
    padding: 0.7rem;
    background: rgba(255, 255, 255, 0.86);
    backdrop-filter: blur(12px);
}

.form-control,
.form-select {
    border-color: #d8dee6;
    border-radius: 8px;
}

.form-control:focus,
.form-select:focus {
    border-color: rgba(49, 92, 77, 0.7);
    box-shadow: 0 0 0 0.2rem rgba(49, 92, 77, 0.13);
}

.list-header {
    color: var(--muted);
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.links-list {
    display: grid;
    gap: 0.55rem;
}

@media (min-width: 900px) {
    .links-list {
        display: block;
        column-count: 2;
        column-gap: 0.75rem;
    }

    .link-card {
        display: inline-block;
        width: 100%;
        margin-bottom: 0.75rem;
        break-inside: avoid;
    }

    .link-card-grid {
        align-items: start;
    }
}

.link-card {
    background: rgba(255, 255, 255, 0.95);
    border-left: 4px solid var(--type-color, transparent) !important;
    box-shadow: var(--card-shadow);
    transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.link-card:hover {
    box-shadow: 0 14px 32px rgba(15, 23, 42, 0.09);
    transform: translateY(-1px);
}

.link-card .card-body {
    padding: 0.72rem 0.85rem;
}

.link-card-grid {
    display: grid;
    grid-template-columns: 2.45rem minmax(0, 1fr) auto;
    gap: 0.7rem;
    align-items: center;
}

.card-type-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.45rem;
    height: 2.45rem;
    border: 1px solid var(--type-border, #d8dee6);
    border-radius: 14px;
    background: var(--type-bg, rgba(100, 116, 139, 0.12));
    color: var(--type-color, #64748b);
}

.card-type-icon i {
    font-size: 1.35rem;
    line-height: 1;
}

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

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    border-radius: 999px;
    font-size: 0.69rem;
    font-weight: 800;
    letter-spacing: 0;
    padding: 0.18rem 0.48rem;
}

.badge-type {
    border-color: var(--type-border, #d8dee6) !important;
    color: var(--type-color, var(--accent)) !important;
}

.type-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.45rem;
    height: 1.45rem;
    border-radius: 999px;
    background: var(--type-bg, rgba(49, 92, 77, 0.12));
    color: var(--type-color, var(--accent));
}

.type-icon i {
    font-size: 1rem;
    line-height: 1;
}

.type-article {
    --type-bg: rgba(49, 92, 77, 0.14);
    --type-border: rgba(49, 92, 77, 0.24);
    --type-color: #315c4d;
}

.type-video {
    --type-bg: rgba(255, 0, 0, 0.13);
    --type-border: rgba(255, 0, 0, 0.28);
    --type-color: #cc0000;
}

.type-tool {
    --type-bg: rgba(37, 99, 235, 0.13);
    --type-border: rgba(37, 99, 235, 0.26);
    --type-color: #2563eb;
}

.type-book {
    --type-bg: rgba(180, 83, 9, 0.14);
    --type-border: rgba(180, 83, 9, 0.28);
    --type-color: #b45309;
}

.type-link {
    --type-bg: rgba(100, 116, 139, 0.14);
    --type-border: rgba(100, 116, 139, 0.26);
    --type-color: #64748b;
}

.link-title {
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: 0;
    line-height: 1.22;
}

.link-title a {
    color: var(--ink);
    text-decoration: none;
}

.link-title a:hover {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 0.18em;
}

.link-meta-line {
    color: var(--muted);
}

.link-meta-line {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    font-size: 0.82rem;
}

.link-description {
    color: #344054;
    font-size: 0.88rem;
    line-height: 1.55;
}

.actions {
    align-self: start;
    white-space: nowrap;
}

.actions form {
    margin: 0;
}

.actions .btn-link,
.back-link {
    color: #64748b;
    font-size: 0.78rem;
    font-weight: 700;
    text-decoration: none;
}

.actions .btn-link:hover,
.back-link:hover {
    color: var(--ink);
    text-decoration: underline;
    text-underline-offset: 0.18em;
}

.page-header {
    max-width: 620px;
}

.back-link {
    display: inline-flex;
    margin-bottom: 0.75rem;
}

.form-card {
    background: rgba(255, 255, 255, 0.96);
}

.form-card .card-body {
    padding: 1.35rem;
}

.form-label {
    color: #344054;
    font-size: 0.84rem;
    font-weight: 800;
}

.auth-form {
    max-width: 430px;
}

.alert p {
    margin: 0;
}

.alert p + p {
    margin-top: 0.4rem;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 780px) {
    .site-header {
        display: block;
    }

    .header-actions {
        margin-top: 1rem;
    }

    .filters {
        grid-template-columns: 1fr 1fr;
    }

    .filters input {
        grid-column: 1 / -1;
    }

    .display-title {
        line-height: 1.05;
    }
}

@media (max-width: 520px) {
    body {
        font-size: 13px;
    }

    .container {
        padding-top: 0.9rem !important;
        padding-bottom: 2rem !important;
    }

    .home-nav {
        font-size: 0.74rem;
        margin-bottom: 0.65rem !important;
    }

    .site-header {
        margin-bottom: 0.95rem !important;
    }

    .eyebrow {
        font-size: 0.62rem;
        margin-bottom: 0.25rem !important;
    }

    .display-title {
        font-size: 2.18rem;
        line-height: 0.98;
        margin-bottom: 0.42rem !important;
    }

    .intro {
        display: -webkit-box;
        overflow: hidden;
        font-size: 0.92rem;
        line-height: 1.35;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
    }

    .filters {
        grid-template-columns: 1fr 1fr;
        gap: 0.45rem;
        padding: 0.55rem;
        margin-bottom: 1rem !important;
    }

    .filters input,
    .filters .btn-primary {
        grid-column: 1 / -1;
    }

    .filters .btn {
        width: 100%;
    }

    .header-actions {
        display: none !important;
    }

    .link-card .card-body {
        padding: 0.78rem;
    }

    .link-card-grid {
        grid-template-columns: 2.25rem minmax(0, 1fr);
        gap: 0.62rem;
        align-items: start;
    }

    .card-type-icon {
        width: 2.25rem;
        height: 2.25rem;
        border-radius: 12px;
    }

    .card-type-icon i {
        font-size: 1.22rem;
    }

    .actions {
        grid-column: 2;
        width: 100%;
    }

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