/* Light design shared by every marketing page. Body class .site-light.
   Palette and type roles come from _dev/brand/ROOST-BRAND-USAGE.md. */
.site-light {
    --paper: #EBF3F8;
    --paper-lift: #F7FAFC;
    --ink: #323944;
    --ink-soft: #5A6372;
    --indigo: #1F1E96;
    --violet: #4023BF;
    --gold: #FDC100;
    --line: rgba(31, 30, 150, 0.12);
    /* Semantic roles, so dark mode can swap them without touching the brand colors */
    --heading: var(--indigo);
    --surface: #FFFFFF;
    background: var(--paper);
    color: var(--ink);
}

/* Navigation */
.site-light .navbar {
    background: rgba(235, 243, 248, 0.92);
    border-bottom: 1px solid var(--line);
}

.site-light .navbar::after {
    background: rgba(31, 30, 150, 0.2);
}

.site-light .nav-links a {
    color: var(--ink);
    font-weight: 600;
}

.site-light .nav-links a:hover {
    color: var(--heading);
}

.site-light .nav-links .nav-cta {
    min-height: 44px;
    padding: 0 20px;
    border-radius: 999px;
    background: var(--gold);
    color: var(--heading);
    font-weight: 800;
}

.site-light .nav-links .nav-cta:hover {
    background: #FFD12E;
    color: var(--heading);
}

.site-light .nav-toggle {
    color: var(--ink);
    background: var(--surface);
    border-color: var(--line);
}

.site-light .nav-toggle-icon span {
    background: var(--indigo);
}

.site-light .nav-toggle:focus-visible,
.site-light .nav-links a:focus-visible,
.sl-main a:focus-visible,
.sl-main summary:focus-visible {
    outline: 3px solid var(--violet);
    outline-offset: 3px;
}

/* Layout */
.sl-main {
    padding-top: var(--header-height);
}

.sl-wrap {
    width: min(100%, 1200px);
    margin: 0 auto;
    padding-inline: 20px;
}

.site-light .store-badges {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    width: auto;
    margin-top: 28px;
}

.site-light .store-badges a {
    display: inline-flex;
    line-height: 0;
    border-radius: 10px;
}

.site-light .store-badges img {
    width: auto;
    height: 50px;
}

.site-light .store-escape {
    margin-top: 18px;
    max-width: 26rem;
}

/* Sections */
.sl-section {
    padding-block: 88px 0;
}

.sl-h2 {
    color: var(--heading);
    font-size: clamp(1.9rem, 3.4vw, 2.7rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
    text-wrap: balance;
}

.sl-body {
    max-width: 34rem;
    margin-top: 16px;
    color: var(--ink-soft);
    font-size: 1.1rem;
    line-height: 1.65;
}

.sl-accordion details {
    border-bottom: 1px solid var(--line);
}

.sl-accordion details:first-child {
    border-top: 1px solid var(--line);
}

.sl-accordion summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 64px;
    padding: 12px 0;
    color: var(--ink);
    font-size: 1.12rem;
    font-weight: 800;
    list-style: none;
    cursor: pointer;
}

.sl-accordion summary::-webkit-details-marker {
    display: none;
}

.sl-accordion summary::after {
    content: "";
    width: 12px;
    height: 12px;
    flex: none;
    border-right: 2.5px solid var(--indigo);
    border-bottom: 2.5px solid var(--indigo);
    transform: rotate(45deg) translateY(-3px);
    transition: transform 0.2s ease;
}

.sl-accordion details[open] summary::after {
    transform: rotate(225deg) translateY(-3px);
}

.sl-accordion details p {
    max-width: 40rem;
    padding-bottom: 20px;
    color: var(--ink-soft);
    line-height: 1.65;
}

/* Closing call to action */
.sl-cta {
    margin-top: 96px;
    padding-block: 64px;
    background: var(--gold);
}

.sl-cta-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.sl-cta h2 {
    color: var(--heading);
    font-size: clamp(1.9rem, 3.6vw, 2.8rem);
    font-weight: 900;
    letter-spacing: -0.02em;
}

.sl-cta .store-badges {
    margin-top: 0;
}

/* Footer: the night sky again, bookending the friends panel */
.site-light .footer {
    background: var(--indigo);
    border-top: 0;
    backdrop-filter: none;
}

.site-light .footer-content,
.site-light .footer-links a {
    color: rgba(255, 255, 255, 0.78);
}

.site-light .footer-links a:hover,
.site-light .footer-links a[aria-current="page"] {
    color: var(--gold);
}

@media (max-width: 1080px) {
    .site-light .nav-links {
        background: var(--paper-lift);
        border-bottom-color: var(--line);
        box-shadow: 0 22px 44px rgba(31, 30, 150, 0.14);
    }

    .site-light .nav-links a:hover,
    .site-light .nav-links a[aria-current="page"] {
        background: rgba(31, 30, 150, 0.06);
    }

    .site-light .nav-links .nav-cta {
        justify-content: center;
        margin-top: 10px;
    }
}

@media (max-width: 600px) {
    .sl-section {
        padding-top: 64px;
    }

    .sl-cta-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (prefers-reduced-motion: reduce) {
    .sl-accordion summary::after {
        transition: none;
    }
}

/* Scroll targets land below the fixed header */
.sl-main [id] {
    scroll-margin-top: calc(var(--header-height) + 16px);
}

/* Question headings inside accordions keep the summary's type */
.sl-accordion summary h3 {
    margin: 0;
    font: inherit;
    color: inherit;
}

.sl-answer p + p,
.sl-answer p + ul,
.sl-answer ul + p {
    margin-top: 12px;
}

.sl-answer ul {
    padding-left: 1.2em;
    color: var(--ink-soft);
    line-height: 1.65;
}

.sl-answer a,
.sl-body a,
.sl-prose a {
    color: var(--heading);
    text-decoration: underline;
    text-decoration-color: var(--gold);
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

/* Breadcrumbs */
.sl-crumbs ol {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 24px 0 0;
    margin: 0;
    list-style: none;
    color: var(--ink-soft);
    font-size: 0.92rem;
}

.sl-crumbs li + li::before {
    content: "/";
    margin-right: 6px;
    color: rgba(50, 57, 68, 0.4);
}

.sl-crumbs a {
    color: var(--ink-soft);
}

/* Long-form reading: topic pages and guides */
.sl-prose {
    max-width: 42rem;
    color: var(--ink);
    font-size: 1.08rem;
    line-height: 1.7;
}

.sl-prose h2 {
    margin-top: 56px;
    color: var(--heading);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    line-height: 1.15;
    text-wrap: balance;
}

.sl-prose h3 {
    margin-top: 32px;
    color: var(--ink);
    font-size: 1.2rem;
    font-weight: 800;
}

.sl-prose p,
.sl-prose ul,
.sl-prose ol {
    margin-top: 14px;
}

.sl-prose ul,
.sl-prose ol {
    padding-left: 1.3em;
}

/* Rarity chip: color comes from --chip */
.sl-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--chip) 14%, #FFFFFF);
    color: color-mix(in srgb, var(--chip) 55%, #1B1B1F);
    font-size: 0.85rem;
    font-weight: 800;
}

.sl-chip::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--chip);
}

/* Plain content pages (support): a title above .sl-prose */
.sl-page-title {
    max-width: 42rem;
    padding-top: 24px;
    color: var(--heading);
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.02em;
}

.sl-prose > p:first-child {
    margin-top: 18px;
    color: var(--ink-soft);
    font-size: 1.15rem;
}

/* ---- One system across pages (design review 2026-09-28) ---- */

/* Type scale: the homepage H1 is the display size, every other H1 and H2 shares one scale */
.site-light {
    --h1: clamp(2.3rem, 5.2vw, 3.6rem);
    --h2: clamp(1.6rem, 3vw, 2.4rem);
}

.site-light .topic-hero h1,
.site-light .faq-head h1,
.site-light .birds-head h1,
.site-light .bird-hero h1,
.site-light .sl-page-title,
.site-light .slow-tech-hero h1,
.site-light .hero-title {
    font-size: var(--h1);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.025em;
}

.site-light .sl-h2,
.site-light .sl-prose h2,
.site-light .faq-section h2,
.site-light .bird-guide h2,
.site-light .bird-more h2,
.site-light .bird-roost h2,
.site-light .birds-popular h2,
.site-light .birds-collections-title,
.site-light .slow-tech-section h2 {
    font-size: var(--h2);
    font-weight: 800;
    line-height: 1.12;
}

.site-light .path h2 {
    font-weight: 800;
}

/* Gold call-to-action band: same layout everywhere, badges on the right from tablet up */
.site-light .sl-cta h2 {
    max-width: 18ch;
    font-weight: 800;
    line-height: 1.08;
    text-wrap: balance;
}

@media (min-width: 768px) {
    .site-light .sl-cta-inner {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: center;
    }
}

/* Headings and copy wrap without stranded words */
.site-light .path h2,
.site-light .topic-lede,
.site-light .home-lede,
.site-light .sl-prose p {
    text-wrap: pretty;
}

/* Links: one style, unbroken gold underline */
.site-light .faq-head a,
.site-light .slow-tech-card a,
.site-light .bird-tags a {
    color: var(--heading);
    text-decoration: underline;
    text-decoration-color: var(--gold);
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

.site-light .sl-answer a,
.site-light .sl-body a,
.site-light .sl-prose a,
.site-light .faq-head a,
.site-light .slow-tech-card a,
.site-light .bird-tags a,
.site-light .path-link {
    text-decoration-skip-ink: none;
}

/* Accordion: chevron inside the rule, answers one reading width */
.site-light .sl-accordion summary::after {
    margin-right: 5px;
}

.site-light .sl-answer > * {
    max-width: 42rem;
}

.site-light .sl-accordion details p {
    padding-bottom: 0;
}

.site-light .sl-answer {
    padding-bottom: 20px;
}

/* Skip link, visible on keyboard focus */
.skip-link {
    position: absolute;
    top: 8px;
    left: 8px;
    z-index: 1000;
    padding: 10px 16px;
    border-radius: 12px;
    background: var(--indigo);
    color: #FFFFFF;
    font-weight: 800;
    transform: translateY(-160%);
}

.skip-link:focus {
    transform: none;
}

/* Breadcrumb links are real tap targets */
.sl-crumbs a {
    display: inline-block;
    padding-block: 4px;
}

/* Footer column titles in sentence case, not shouted */
.site-light .footer-group h2 {
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: none;
}

/* One gutter at every width */
@media (max-width: 480px) {
    .site-light .container {
        padding-inline: 20px;
    }
}

.sl-crumbs ol {
    align-items: center;
}

/* Text links with an arrow-free call to action (homepage panels, topic heroes, bird pages) */
.path-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    margin-top: 14px;
    color: var(--heading);
    font-weight: 800;
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 5px;
    text-decoration-color: var(--gold);
}
.path-link:hover {
    text-decoration-color: var(--heading);
}

/* Text that sits on gold stays indigo in every theme */
.site-light .nav-links .nav-cta,
.site-light .sl-cta h2,
.site-light .topic-button:not(.topic-button-quiet),
.site-light .slow-tech-button:not(.slow-tech-button-secondary),
.site-light .slow-tech-card-number,
.site-light .partner-bubble-button,
.site-light .home-steps li::before {
    color: var(--indigo);
}

/* ---- Dark mode. Night-sky indigo, the brand's gold kept as is. It follows the device setting
   unless the visitor picks a theme with the nav switch, which sets <html data-theme>. ---- */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        background: #0B0A30;
    }

    :root:not([data-theme="light"]) .site-light {
        color-scheme: dark;
        --paper: #0B0A30;
        --paper-lift: #141358;
        --surface: #17165E;
        --ink: #E7EAF5;
        --ink-soft: #B0B7CF;
        --heading: #FFFFFF;
        --violet: #B7A9FF;
        --line: rgba(255, 255, 255, 0.13);
    }

    /* Chrome */
    :root:not([data-theme="light"]) .site-light .navbar {
        background: rgba(11, 10, 48, 0.9);
    }

    :root:not([data-theme="light"]) .site-light .navbar::after {
        background: rgba(255, 255, 255, 0.12);
    }

    :root:not([data-theme="light"]) .site-light .nav-toggle-icon span {
        background: #FFFFFF;
    }

    :root:not([data-theme="light"]) .site-light .nav-links a:hover,
    :root:not([data-theme="light"]) .site-light .topic-toc a:hover,
    :root:not([data-theme="light"]) .site-light .topic-toc a:focus-visible,
    :root:not([data-theme="light"]) .site-light .faq-index a:hover,
    :root:not([data-theme="light"]) .site-light .faq-index a:focus-visible,
    :root:not([data-theme="light"]) .site-light .press-copy-button:hover,
    :root:not([data-theme="light"]) .site-light .lead-choices label:has(input:checked) {
        background: rgba(255, 255, 255, 0.08);
    }

    :root:not([data-theme="light"]) .site-light .nav-links {
        box-shadow: 0 22px 44px rgba(0, 0, 0, 0.45);
    }

    :root:not([data-theme="light"]) .site-light .footer {
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    :root:not([data-theme="light"]) .sl-crumbs li + li::before {
        color: rgba(231, 234, 245, 0.35);
    }

    :root:not([data-theme="light"]) .site-light .sl-accordion summary::after {
        border-color: var(--heading);
    }

    /* Rarity chips: tinted for a dark surface */
    :root:not([data-theme="light"]) .sl-chip {
        background: color-mix(in srgb, var(--chip) 24%, var(--surface));
        color: color-mix(in srgb, var(--chip) 50%, #FFFFFF);
    }

    /* Buttons and outlines drawn with indigo in light mode */
    :root:not([data-theme="light"]) .site-light .topic-button-quiet,
    :root:not([data-theme="light"]) .site-light .slow-tech-button-secondary,
    :root:not([data-theme="light"]) .site-light .press-copy-button {
        border-color: rgba(255, 255, 255, 0.28);
    }

    /* Homepage */
    :root:not([data-theme="light"]) .site-light .press-mark {
        background-color: rgba(231, 234, 245, 0.6);
    }

    :root:not([data-theme="light"]) .site-light .home-steps::before {
        border-color: rgba(255, 255, 255, 0.25);
    }

    :root:not([data-theme="light"]) .site-light .home-birds-flock {
        border-bottom-color: rgba(255, 255, 255, 0.14);
    }

    :root:not([data-theme="light"]) .site-light .path-penpals {
        background:
            radial-gradient(ellipse 60% 38% at 18% 88%, rgba(255, 255, 255, 0.07) 0 58%, transparent 60%),
            radial-gradient(ellipse 46% 30% at 70% 96%, rgba(255, 255, 255, 0.06) 0 58%, transparent 60%),
            linear-gradient(180deg, #1C2A70 0%, #141A55 100%);
    }

    /* Press and partners */
    :root:not([data-theme="light"]) .site-light .partner-visual {
        background: linear-gradient(180deg, #1C2A70 0%, #141A55 100%);
    }

    :root:not([data-theme="light"]) .site-light .partner-package-highlight,
    :root:not([data-theme="light"]) .site-light .press-timeline li:last-child {
        background: rgba(253, 193, 0, 0.12);
    }

    :root:not([data-theme="light"]) .site-light .partner-format-example,
    :root:not([data-theme="light"]) .site-light .press-timeline-date {
        color: var(--gold) !important;
    }

    :root:not([data-theme="light"]) .site-light .press-stats {
        box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
    }

    :root:not([data-theme="light"]) .site-light .lead-field input,
    :root:not([data-theme="light"]) .site-light .lead-field select,
    :root:not([data-theme="light"]) .site-light .lead-field textarea,
    :root:not([data-theme="light"]) .site-light .lead-choices label {
        border-color: rgba(255, 255, 255, 0.22);
    }

    :root:not([data-theme="light"]) .site-light .lead-field select {
        background-image: linear-gradient(45deg, transparent 50%, var(--heading) 50%), linear-gradient(135deg, var(--heading) 50%, transparent 50%);
    }

    :root:not([data-theme="light"]) .site-light .lead-form-status.is-error,
    :root:not([data-theme="light"]) .site-light .lead-field [aria-invalid="true"] {
        color: #FF8A7A !important;
        border-color: #FF8A7A;
    }

    @media (max-width: 1080px) {
        :root:not([data-theme="light"]) .site-light .nav-links a[aria-current="page"] {
            background: rgba(255, 255, 255, 0.08);
        }
    }
}

/* Chosen with the switch */
:root[data-theme="dark"] {
    background: #0B0A30;
}

:root[data-theme="dark"] .site-light {
    color-scheme: dark;
    --paper: #0B0A30;
    --paper-lift: #141358;
    --surface: #17165E;
    --ink: #E7EAF5;
    --ink-soft: #B0B7CF;
    --heading: #FFFFFF;
    --violet: #B7A9FF;
    --line: rgba(255, 255, 255, 0.13);
}

/* Chrome */
:root[data-theme="dark"] .site-light .navbar {
    background: rgba(11, 10, 48, 0.9);
}

:root[data-theme="dark"] .site-light .navbar::after {
    background: rgba(255, 255, 255, 0.12);
}

:root[data-theme="dark"] .site-light .nav-toggle-icon span {
    background: #FFFFFF;
}

:root[data-theme="dark"] .site-light .nav-links a:hover,
:root[data-theme="dark"] .site-light .topic-toc a:hover,
:root[data-theme="dark"] .site-light .topic-toc a:focus-visible,
:root[data-theme="dark"] .site-light .faq-index a:hover,
:root[data-theme="dark"] .site-light .faq-index a:focus-visible,
:root[data-theme="dark"] .site-light .press-copy-button:hover,
:root[data-theme="dark"] .site-light .lead-choices label:has(input:checked) {
    background: rgba(255, 255, 255, 0.08);
}

:root[data-theme="dark"] .site-light .nav-links {
    box-shadow: 0 22px 44px rgba(0, 0, 0, 0.45);
}

:root[data-theme="dark"] .site-light .footer {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

:root[data-theme="dark"] .sl-crumbs li + li::before {
    color: rgba(231, 234, 245, 0.35);
}

:root[data-theme="dark"] .site-light .sl-accordion summary::after {
    border-color: var(--heading);
}

/* Rarity chips: tinted for a dark surface */
:root[data-theme="dark"] .sl-chip {
    background: color-mix(in srgb, var(--chip) 24%, var(--surface));
    color: color-mix(in srgb, var(--chip) 50%, #FFFFFF);
}

/* Buttons and outlines drawn with indigo in light mode */
:root[data-theme="dark"] .site-light .topic-button-quiet,
:root[data-theme="dark"] .site-light .slow-tech-button-secondary,
:root[data-theme="dark"] .site-light .press-copy-button {
    border-color: rgba(255, 255, 255, 0.28);
}

/* Homepage */
:root[data-theme="dark"] .site-light .press-mark {
    background-color: rgba(231, 234, 245, 0.6);
}

:root[data-theme="dark"] .site-light .home-steps::before {
    border-color: rgba(255, 255, 255, 0.25);
}

:root[data-theme="dark"] .site-light .home-birds-flock {
    border-bottom-color: rgba(255, 255, 255, 0.14);
}

:root[data-theme="dark"] .site-light .path-penpals {
    background:
        radial-gradient(ellipse 60% 38% at 18% 88%, rgba(255, 255, 255, 0.07) 0 58%, transparent 60%),
        radial-gradient(ellipse 46% 30% at 70% 96%, rgba(255, 255, 255, 0.06) 0 58%, transparent 60%),
        linear-gradient(180deg, #1C2A70 0%, #141A55 100%);
}

/* Press and partners */
:root[data-theme="dark"] .site-light .partner-visual {
    background: linear-gradient(180deg, #1C2A70 0%, #141A55 100%);
}

:root[data-theme="dark"] .site-light .partner-package-highlight,
:root[data-theme="dark"] .site-light .press-timeline li:last-child {
    background: rgba(253, 193, 0, 0.12);
}

:root[data-theme="dark"] .site-light .partner-format-example,
:root[data-theme="dark"] .site-light .press-timeline-date {
    color: var(--gold) !important;
}

:root[data-theme="dark"] .site-light .press-stats {
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

:root[data-theme="dark"] .site-light .lead-field input,
:root[data-theme="dark"] .site-light .lead-field select,
:root[data-theme="dark"] .site-light .lead-field textarea,
:root[data-theme="dark"] .site-light .lead-choices label {
    border-color: rgba(255, 255, 255, 0.22);
}

:root[data-theme="dark"] .site-light .lead-field select {
    background-image: linear-gradient(45deg, transparent 50%, var(--heading) 50%), linear-gradient(135deg, var(--heading) 50%, transparent 50%);
}

:root[data-theme="dark"] .site-light .lead-form-status.is-error,
:root[data-theme="dark"] .site-light .lead-field [aria-invalid="true"] {
    color: #FF8A7A !important;
    border-color: #FF8A7A;
}

@media (max-width: 1080px) {
    :root[data-theme="dark"] .site-light .nav-links a[aria-current="page"] {
        background: rgba(255, 255, 255, 0.08);
    }
}


/* ---- Theme switch (sun/moon) ---- */
.site-light .nav-container {
    justify-content: flex-start;
}

.site-light .nav-links {
    margin-left: auto;
}

.theme-switch {
    display: inline-grid;
    place-items: center;
    flex: none;
    width: 44px;
    height: 44px;
    margin-left: 14px;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--surface);
    color: var(--heading);
    cursor: pointer;
}

.theme-switch:hover {
    border-color: var(--heading);
}

.theme-switch:focus-visible {
    outline: 3px solid var(--violet);
    outline-offset: 3px;
}

.theme-switch .icon-sun,
.nav-logo .logo-on-dark {
    display: none;
}

@media (max-width: 1080px) {
    .site-light .nav-toggle {
        margin-left: auto;
    }

    .theme-switch {
        margin-left: 10px;
    }
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .theme-switch .icon-sun,
    :root:not([data-theme="light"]) .site-light .nav-logo .logo-on-dark {
        display: block;
    }

    :root:not([data-theme="light"]) .theme-switch .icon-moon,
    :root:not([data-theme="light"]) .site-light .nav-logo .logo-on-light {
        display: none;
    }
}

:root[data-theme="dark"] .theme-switch .icon-sun,
:root[data-theme="dark"] .site-light .nav-logo .logo-on-dark {
    display: block;
}

:root[data-theme="dark"] .theme-switch .icon-moon,
:root[data-theme="dark"] .site-light .nav-logo .logo-on-light {
    display: none;
}