/* ---------- Fonts ---------- */

@font-face {
    font-family: 'Bricolage Grotesque';
    src: url('../../static/font/BricolageGrotesque-VariableFont_opsz,wdth,wght.ttf') format('truetype-variations');
    font-weight: 200 800;
    font-style: normal;
    font-display: swap;
}

/* ---------- Base ---------- */

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

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Bricolage Grotesque', 'Inter', sans-serif;
    font-size: 17px;
    line-height: 1.7;
    color: #1a1a1a;
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: #111111;
    color: #ffffff;
}

code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.875em;
}

/* ---------- Layout ---------- */

.page {
    width: 100%;
    max-width: 88rem;
    margin: 0 auto;
    padding: 2rem 1.5rem 5rem;
}

@media (min-width: 768px) {
    .page {
        padding: 3rem 2rem 5rem;
    }
}

/* ---------- Masthead ---------- */

.masthead {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1.5rem 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #ebebeb;
}

.masthead__lead {
    min-width: 0;
}

.masthead__eyebrow {
    margin: 0 0 1rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.75rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: #a3a3a3;
}

.masthead__title {
    margin: 0;
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -0.045em;
    line-height: 1.05;
    color: #111111;
}

@media (min-width: 640px) {
    .masthead__title {
        font-size: 4rem;
    }
}

.masthead__nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.masthead__link {
    padding: 0.4rem 0.85rem;
    background-color: #ffffff;
    border: 1px solid #e4e4e4;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-decoration: none;
    color: #737373;
    transition: border-color 200ms ease, color 200ms ease;
}

.masthead__link:hover {
    border-color: #c9c9c9;
    color: #111111;
}

.masthead__link[aria-current="page"] {
    background-color: #111111;
    border-color: #111111;
    color: #ffffff;
}

/* ---------- Blocks ---------- */

.block {
    padding-top: 3.5rem;
    scroll-margin-top: 2rem;
}

.block__title {
    margin: 0 0 1.25rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: #111111;
}

.block__heading {
    margin: 2.5rem 0 1rem;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #111111;
}

.block__subheading {
    margin: 2rem 0 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: #111111;
}

.block__text {
    margin: 0 0 1.15rem;
    color: #3d3d3d;
    max-width: 70ch;
}

.block__text:last-child {
    margin-bottom: 0;
}

/* ---------- Motor figures ---------- */

.motor-fig {
    margin: 2rem 0;
    background-color: #f6f6f6;
    border: 1px solid #e4e4e4;
}

.motor-fig__img {
    display: block;
    width: 100%;
    height: auto;
    max-width: 600px;
    margin: 0 auto;
}

.motor-fig__video {
    display: block;
    width: 100%;
    height: auto;
    max-width: 700px;
    margin: 0 auto;
    background-color: #000000;
}

.motor-fig__caption {
    padding: 0.75rem 1.25rem;
    border-top: 1px solid #e4e4e4;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #8a8a8a;
}

/* ---------- Motor grid ---------- */

.motor-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

@media (min-width: 640px) {
    .motor-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .motor-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.motor-card {
    background-color: #ffffff;
    border: 1px solid #e4e4e4;
    box-shadow: 0 12px 28px -22px rgba(0, 0, 0, 0.4);
}

.motor-card__img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    background-color: #f6f6f6;
    border-bottom: 1px solid #e4e4e4;
}

.motor-card__body {
    padding: 1.1rem 1.25rem;
}

.motor-card__title {
    margin: 0 0 0.5rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #111111;
}

.motor-card__text {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #3d3d3d;
}

/* ---------- Code blocks ---------- */

.code {
    margin: 1.75rem 0;
    background-color: #111111;
    border: 1px solid #1f1f1f;
    box-shadow: 0 20px 40px -26px rgba(0, 0, 0, 0.6);
}

.code__bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.55rem 0.9rem;
    background-color: #1a1a1a;
    border-bottom: 1px solid #262626;
}

.code__name {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.68rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #8a8a8a;
}

.code__copy {
    flex-shrink: 0;
    padding: 0.3rem 0.75rem;
    background-color: transparent;
    border: 1px solid #333333;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #a3a3a3;
    cursor: pointer;
    transition: border-color 200ms ease, color 200ms ease;
}

.code__copy:hover {
    border-color: #555555;
    color: #ffffff;
}

.code__copy.is-done {
    border-color: #4f7a4f;
    color: #7fb87f;
}

.code__body {
    margin: 0;
    padding: 1.1rem 1.25rem;
    overflow-x: auto;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.82rem;
    line-height: 1.75;
    color: #d4d4d4;
    tab-size: 4;
}

/* ---------- Tip Cards ---------- */

.tip-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

@media (min-width: 768px) {
    .tip-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .tip-cards {
        grid-template-columns: repeat(3, 1fr);
    }
}

.tip-card {
    background-color: #f6f6f6;
    border: 1px solid #e4e4e4;
    border-left: 3px solid #111111;
    padding: 1.5rem;
    position: relative;
}

.tip-card__badge {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    background-color: #111111;
    color: #ffffff;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.tip-card__title {
    margin: 0 0 0.75rem;
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: #111111;
}

.tip-card__text {
    margin: 0 0 1rem;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #3d3d3d;
}

.tip-card__download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: #111111;
    border: 1px solid #111111;
    color: #ffffff;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-decoration: none;
    transition: background-color 200ms ease, color 200ms ease;
}

.tip-card__download:hover {
    background-color: #ffffff;
    color: #111111;
}

.tip-card__download::before {
    content: "↗";
    font-size: 1rem;
}

/* ---------- Highlight boxes ---------- */

.highlight-box {
    background: #fff5f7;
    border-left: 4px solid #f5576c;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 4px;
}

.highlight-box--info {
    background: #f0f9ff;
    border-left-color: #3b82f6;
}

.highlight-box--warning {
    background: #fffbeb;
    border-left-color: #f59e0b;
}

.highlight-box--success {
    background: #f0fdf4;
    border-left-color: #10b981;
}

.highlight-box__title {
    margin: 0 0 0.75rem;
    font-size: 1rem;
    font-weight: 700;
    color: #111111;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.highlight-box__text {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.6;
    color: #3d3d3d;
}

.highlight-box__text strong {
    color: #111111;
    font-weight: 600;
}

/* ---------- Key points list ---------- */

.key-points {
    margin: 1.5rem 0;
    padding: 0;
    list-style: none;
}

.key-point {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid #f2f2f2;
}

.key-point:last-child {
    border-bottom: none;
}

.key-point__icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background: #111111;
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    margin-top: 0.1rem;
}

.key-point__text {
    flex: 1;
    font-size: 0.95rem;
    line-height: 1.6;
    color: #3d3d3d;
}

.key-point__text strong {
    color: #111111;
    font-weight: 600;
}

/* ---------- Collapsible sections ---------- */

.collapsible {
    margin: 1.5rem 0;
}

.collapsible__trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: #f7fafc;
    border: 1px solid #e2e8f0;
    cursor: pointer;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    color: #111111;
    text-align: left;
    transition: all 200ms ease;
}

.collapsible__trigger:hover {
    background: #edf2f7;
}

.collapsible__icon {
    flex-shrink: 0;
    transition: transform 200ms ease;
}

.collapsible.is-open .collapsible__icon {
    transform: rotate(180deg);
}

.collapsible__content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 300ms ease;
}

.collapsible.is-open .collapsible__content {
    max-height: 2000px;
}

.collapsible__body {
    padding: 1.25rem;
    border: 1px solid #e2e8f0;
    border-top: none;
}

/* ---------- Syntax Highlighting ---------- */

.code-keyword {
    color: #c678dd;
    font-weight: 600;
}

.code-comment {
    color: #6f8080;
    font-style: italic;
}

.code-string {
    color: #98c379;
}

.code-number {
    color: #d19a66;
}

.code-function {
    color: #61afef;
}

.code-preprocessor {
    color: #e06c75;
}

/* ---------- Footer ---------- */

.foot {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid #ebebeb;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.8rem;
    color: #a3a3a3;
}

.foot p {
    margin: 0;
}

.foot__back {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #a3a3a3;
    text-decoration: none;
}

.foot__back:hover {
    color: #111111;
}