/* ============================================================

   DESIGN TOKENS

============================================================ */

:root {
    color-scheme: light;

    /* Brand colors */

    --color-forest-950: #071d16;
    --color-forest-900: #0b2b20;
    --color-forest-800: #123d2e;
    --color-forest-700: #1a523e;
    --color-forest-600: #246a51;
    --color-forest-500: #328468;
    --color-forest-400: #55a488;
    --color-forest-300: #83c1aa;
    --color-forest-200: #b8ddce;
    --color-forest-100: #ddefe8;
    --color-forest-50: #f0f8f4;

    --color-accent-700: #397b36;
    --color-accent-600: #4d9446;
    --color-accent-500: #66aa5d;
    --color-accent-400: #81bf76;
    --color-accent-300: #a7d49e;
    --color-accent-100: #e3f2df;

    /* Neutral colors */

    --color-ink: #15201c;
    --color-text: #34433d;
    --color-text-muted: #65736d;
    --color-border: #d7e0dc;
    --color-border-strong: #bdcbc5;

    --color-background: #f6f8f7;
    --color-surface: #ffffff;
    --color-surface-soft: #edf3f0;
    --color-white: #ffffff;

    /* Status colors */

    --color-success: #267348;
    --color-success-soft: #e4f4eb;

    --color-error: #a43e3e;
    --color-error-soft: #fbeaea;

    --color-warning: #8b621c;
    --color-warning-soft: #fbf2df;

    /* Typography */

    --font-body:
        "Segoe UI",
        "Helvetica Neue",
        Arial,
        sans-serif;

    --font-heading:
        Georgia,
        "Times New Roman",
        serif;

    --font-mono:
        "SFMono-Regular",
        Consolas,
        "Liberation Mono",
        monospace;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: clamp(2.4rem, 8vw, 4.75rem);

    /* Spacing */

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Layout */

    --container-width: 75rem;
    --container-padding: 1.25rem;
    --header-height: 4.75rem;

    /* Shape */

    --radius-sm: 0.375rem;
    --radius-md: 0.625rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-pill: 999rem;

    /* Shadows */

    --shadow-sm:
        0 0.0625rem 0.125rem rgba(7, 29, 22, 0.04),
        0 0.25rem 0.75rem rgba(7, 29, 22, 0.04);

    --shadow-md:
        0 0.125rem 0.25rem rgba(7, 29, 22, 0.04),
        0 0.75rem 2rem rgba(7, 29, 22, 0.08);

    --shadow-lg:
        0 0.25rem 0.5rem rgba(7, 29, 22, 0.05),
        0 1.5rem 4rem rgba(7, 29, 22, 0.12);

    /* Motion */

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}


/* ============================================================

   RESET

============================================================ */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    min-width: 20rem;
    scroll-behavior: smooth;
    text-size-adjust: 100%;
}

body {
    min-height: 100vh;
    margin: 0;

    background-color: var(--color-background);
    color: var(--color-text);

    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: 1.65;

    overflow-wrap: break-word;

    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body,
h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
    margin: 0;
}

ul,
ol {
    margin: 0;
    padding: 0;
}

img,
picture,
svg,
canvas {
    display: block;
    max-width: 100%;
}

img {
    height: auto;
}

svg {
    width: 100%;
    height: auto;
}

svg:not(:root) {
    overflow: visible;
}

button,
input,
select,
textarea {
    margin: 0;

    color: inherit;
    font: inherit;
}

button,
select,
input[type="checkbox"],
input[type="radio"],
input[type="range"],
input[type="color"] {
    cursor: pointer;
}

button {
    padding: 0;

    border: 0;
    background: none;
}

a {
    color: inherit;
    text-decoration: none;
}

fieldset {
    min-width: 0;
    margin: 0;
    padding: 0;

    border: 0;
}

legend {
    padding: 0;
}

details summary {
    cursor: pointer;
}

[hidden] {
    display: none !important;
}


/* ============================================================

   ACCESSIBILITY

============================================================ */

:focus {
    outline: none;
}

:focus-visible {
    outline: 0.1875rem solid var(--color-accent-500);
    outline-offset: 0.1875rem;
}

::selection {
    background-color: var(--color-forest-200);
    color: var(--color-forest-950);
}

.visually-hidden {
    position: absolute !important;

    width: 0.0625rem !important;
    height: 0.0625rem !important;
    padding: 0 !important;
    margin: -0.0625rem !important;

    overflow: hidden !important;

    clip: rect(0, 0, 0, 0) !important;
    clip-path: inset(50%) !important;

    border: 0 !important;

    white-space: nowrap !important;
}


/* ============================================================

   TYPOGRAPHY

============================================================ */

h1,
h2,
h3,
h4 {
    color: var(--color-ink);

    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.025em;
    text-wrap: balance;
}

h1 {
    font-size: var(--font-size-3xl);
    letter-spacing: -0.045em;
}

h2 {
    font-size: clamp(2rem, 5vw, 3.25rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
    text-wrap: pretty;
}

strong {
    color: var(--color-ink);
    font-weight: 700;
}

.eyebrow {
    display: flex;
    align-items: center;
    gap: var(--space-3);

    margin-bottom: var(--space-4);

    color: var(--color-forest-600);

    font-size: var(--font-size-xs);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.eyebrow::before {
    content: "";

    width: 1.75rem;
    height: 0.125rem;

    background-color: var(--color-accent-500);
    border-radius: var(--radius-pill);
}


/* ============================================================

   SHARED LAYOUT

============================================================ */

.container {
    width: min(
        100% - calc(var(--container-padding) * 2),
        var(--container-width)
    );

    margin-inline: auto;
}

main {
    overflow: hidden;
}

.section-heading {
    max-width: 43rem;
    margin-bottom: var(--space-10);
}

.section-heading > p:not(.eyebrow) {
    max-width: 39rem;
    margin-top: var(--space-5);

    color: var(--color-text-muted);
    font-size: var(--font-size-md);
}


/* Tablet */

@media (min-width: 48rem) {
    :root {
        --container-padding: 2rem;
    }

    .section-heading {
        margin-bottom: var(--space-12);
    }
}


/* Desktop */

@media (min-width: 64rem) {
    :root {
        --container-padding: 2.5rem;
        --header-height: 5.25rem;
    }
}


/* ============================================================

   SITE HEADER

============================================================ */

.site-header {
    position: relative;
    z-index: 100;

    height: var(--header-height);

    background-color: rgba(246, 248, 247, 0.9);
    border-bottom: 0.0625rem solid rgba(189, 203, 197, 0.65);

    backdrop-filter: blur(1rem);
    -webkit-backdrop-filter: blur(1rem);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);

    height: 100%;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);

    flex-shrink: 0;
}

.site-brand__mark {
    display: grid;
    width: 2.65rem;
    height: 2.65rem;
    place-items: center;

    flex: 0 0 auto;

    transition: transform var(--transition-base);
}

.site-brand__mark svg {
    width: 100%;
    height: 100%;

    overflow: visible;
}

.site-brand__mark-background {
    fill: var(--color-forest-800);

    transition: fill var(--transition-base);
}

.site-brand__bird {
    fill: var(--color-white);
}

.site-brand__wing {
    fill: var(--color-forest-800);

    transition: fill var(--transition-base);
}

.site-brand__eye {
    fill: var(--color-forest-900);
}

.site-brand:hover .site-brand__mark {
    transform: translateY(-0.1rem);
}

.site-brand:hover .site-brand__mark-background {
    fill: var(--color-forest-700);
}

.site-brand:hover .site-brand__wing {
    fill: var(--color-forest-700);
}


.site-brand__text {
    display: flex;
    align-items: baseline;
    gap: 0.35rem;

    line-height: 1;
}

.site-brand__name {
    color: var(--color-forest-900);

    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.035em;
}

.site-brand__division {
    color: var(--color-forest-600);

    font-size: var(--font-size-xs);
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.site-header__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);

    min-height: 2.75rem;
    padding: 0.7rem;

    border: 0.0625rem solid var(--color-border);
    border-radius: var(--radius-pill);
    background-color: rgba(255, 255, 255, 0.65);
    color: var(--color-forest-800);

    font-size: var(--font-size-sm);
    font-weight: 700;
    line-height: 1;

    transition:
        border-color var(--transition-base),
        background-color var(--transition-base),
        color var(--transition-base),
        transform var(--transition-base),
        box-shadow var(--transition-base);
}

.site-header__link span {
    display: none;
}

.site-header__link svg {
    width: 1.15rem;
    height: 1.15rem;

    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.site-header__link:hover {
    border-color: var(--color-forest-700);
    background-color: var(--color-forest-800);
    color: var(--color-white);

    transform: translateY(-0.0625rem);
    box-shadow: var(--shadow-sm);
}


/* Tablet */

@media (min-width: 48rem) {
    .site-brand__mark {
        width: 2.9rem;
        height: 2.9rem;
    }

    .site-brand__name {
        font-size: 1.4rem;
    }

    .site-brand__division {
        font-size: 0.8rem;
    }

    .site-header__link {
        min-height: 2.85rem;
        padding: 0.75rem 1.15rem;
    }

    .site-header__link span {
        display: inline;
    }
}


/* Desktop */

@media (min-width: 64rem) {
    .site-header__link:hover svg {
        transform: translate(0.1rem, -0.1rem);
    }

    .site-header__link svg {
        transition: transform var(--transition-base);
    }
}


/* ============================================================

   SHARED BUTTONS

============================================================ */

.primary-button,
.secondary-button,
.download-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);

    min-height: 3.25rem;
    padding: 0.85rem 1.35rem;

    border: 0.0625rem solid transparent;
    border-radius: var(--radius-md);

    font-size: var(--font-size-base);
    font-weight: 750;
    line-height: 1.2;
    text-align: center;

    transition:
        background-color var(--transition-base),
        border-color var(--transition-base),
        color var(--transition-base),
        transform var(--transition-base),
        box-shadow var(--transition-base);
}

.primary-button,
.download-button {
    background-color: var(--color-forest-800);
    color: var(--color-white);

    box-shadow:
        0 0.125rem 0.25rem rgba(7, 29, 22, 0.1),
        0 0.5rem 1.25rem rgba(7, 29, 22, 0.12);
}

.primary-button svg,
.download-button svg {
    width: 1.2rem;
    height: 1.2rem;

    flex-shrink: 0;

    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;

    transition: transform var(--transition-base);
}

.primary-button:hover,
.download-button:hover {
    background-color: var(--color-forest-700);

    transform: translateY(-0.125rem);
    box-shadow:
        0 0.25rem 0.5rem rgba(7, 29, 22, 0.12),
        0 0.85rem 1.75rem rgba(7, 29, 22, 0.16);
}

.primary-button:hover svg {
    transform: translateX(0.2rem);
}

.download-button:hover svg {
    transform: translateY(0.15rem);
}

.primary-button:active,
.download-button:active {
    transform: translateY(0);
}

.primary-button:disabled,
.download-button[aria-disabled="true"] {
    cursor: not-allowed;

    background-color: var(--color-border-strong);
    color: var(--color-text-muted);

    box-shadow: none;
    transform: none;

    opacity: 0.75;
}

.secondary-button {
    border-color: var(--color-border-strong);
    background-color: transparent;
    color: var(--color-forest-800);
}

.secondary-button:hover {
    border-color: var(--color-forest-700);
    background-color: var(--color-forest-50);
}

.text-button {
    color: var(--color-forest-700);

    font-size: var(--font-size-sm);
    font-weight: 750;
    line-height: 1.3;
    text-decoration: underline;
    text-decoration-color: var(--color-forest-300);
    text-decoration-thickness: 0.1rem;
    text-underline-offset: 0.25rem;

    transition:
        color var(--transition-fast),
        text-decoration-color var(--transition-fast);
}

.text-button:hover {
    color: var(--color-forest-900);
    text-decoration-color: currentColor;
}


/* ============================================================

   SHARED FORM ELEMENTS

============================================================ */

input[type="text"],
input[type="number"],
select,
textarea {
    width: 100%;
    min-height: 3rem;
    padding: 0.7rem 0.85rem;

    border: 0.0625rem solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    background-color: var(--color-white);
    color: var(--color-ink);

    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
}

input[type="text"]:hover,
input[type="number"]:hover,
select:hover,
textarea:hover {
    border-color: var(--color-forest-400);
}

input[type="text"]:focus-visible,
input[type="number"]:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: none;

    border-color: var(--color-forest-600);
    box-shadow: 0 0 0 0.1875rem rgba(50, 132, 104, 0.16);
}

input:disabled,
select:disabled,
textarea:disabled {
    cursor: not-allowed;

    background-color: var(--color-surface-soft);
    color: var(--color-text-muted);

    opacity: 0.8;
}


/* ============================================================

   SITE FOOTER

============================================================ */

.site-footer {
    padding-block: var(--space-12) var(--space-8);

    background-color: var(--color-forest-950);
    color: var(--color-forest-200);
}

.site-footer__inner {
    display: grid;
    gap: var(--space-10);
}

.site-footer__brand {
    display: inline-block;
    margin-bottom: var(--space-3);

    color: var(--color-white);

    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.035em;
}

.site-footer__brand span {
    margin-left: 0.2rem;

    color: var(--color-forest-300);

    font-family: var(--font-body);
    font-size: var(--font-size-xs);
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.site-footer__inner > div > p {
    max-width: 25rem;

    color: var(--color-forest-200);
    font-size: var(--font-size-sm);
}

.site-footer nav {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
}

.site-footer nav a {
    position: relative;

    color: var(--color-forest-100);

    font-size: var(--font-size-sm);
    font-weight: 650;

    transition: color var(--transition-fast);
}

.site-footer nav a::after {
    content: "";

    position: absolute;
    right: 0;
    bottom: -0.2rem;
    left: 0;

    height: 0.0625rem;

    background-color: var(--color-forest-300);

    transform: scaleX(0);
    transform-origin: right;

    transition: transform var(--transition-base);
}

.site-footer nav a:hover {
    color: var(--color-white);
}

.site-footer nav a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.site-footer__copyright {
    padding-top: var(--space-6);

    border-top: 0.0625rem solid rgba(184, 221, 206, 0.16);
    color: var(--color-forest-300);

    font-size: var(--font-size-xs);
    letter-spacing: 0.025em;
}


/* Tablet */

@media (min-width: 48rem) {
    .site-footer {
        padding-block: var(--space-16) var(--space-8);
    }

    .site-footer__inner {
        grid-template-columns: minmax(0, 1.5fr) minmax(12rem, 1fr);
        align-items: start;
    }

    .site-footer nav {
        justify-self: end;
        min-width: 12rem;
    }

    .site-footer__copyright {
        grid-column: 1 / -1;
    }
}


/* Desktop */

@media (min-width: 64rem) {
    .site-footer__inner {
        grid-template-columns: minmax(0, 2fr) minmax(14rem, 1fr);
    }
}


/* ============================================================

   REDUCED MOTION

============================================================ */

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}