/* Ressources theme. Palette and rules: brand reference (navy, orange accent, paper).
   Orange is an accent only; orange text on light backgrounds uses the darker --link. */
:root {
	--navy: #14213d;
	--navy-2: #1f3157;
	--orange: #e07a3f;
	--orange-light: #f2a877;
	--paper: #eef1f6;
	--white: #ffffff;
	--night: #0b1220;

	--bg: var(--white);
	--bg-alt: var(--paper);
	--fg: var(--navy);
	--fg-muted: #5b6475;
	--line: #d5dae3;
	--link: #b8531a;
	--link-hover: var(--navy);
	--button-bg: var(--navy);
	--button-fg: var(--white);
	--button-hover: var(--navy-2);

	--radius: 10px;
	--wrap: 68rem;
	--gap: clamp(1rem, 3vw, 2rem);
	--font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg: var(--night);
		--bg-alt: #111a2e;
		--fg: var(--paper);
		--fg-muted: #9aa4b8;
		--line: #243252;
		--link: var(--orange-light);
		--link-hover: var(--white);
		--button-bg: var(--orange);
		--button-fg: var(--night);
		--button-hover: var(--orange-light);
	}
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
	margin: 0;
	min-height: 100vh;
	display: flex;
	flex-direction: column;
	background: var(--bg);
	color: var(--fg);
	font: 1.0625rem/1.65 var(--font);
}
img, svg, video { max-width: 100%; height: auto; }
a { color: var(--link); text-underline-offset: 0.18em; }
a:hover { color: var(--link-hover); }
:focus-visible { outline: 3px solid var(--orange); outline-offset: 2px; border-radius: 3px; }

.r-wrap { width: min(100% - 2 * var(--gap), var(--wrap)); margin-inline: auto; }
.r-skip {
	position: absolute; left: var(--gap); top: -4rem; z-index: 10;
	background: var(--white); color: var(--navy); padding: 0.6rem 1rem; border-radius: var(--radius);
}
.r-skip:focus { top: var(--gap); }

/* Header: navy, logo for dark backgrounds */
.r-header { background: var(--navy); color: var(--paper); border-bottom: 3px solid var(--orange); }
.r-header__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem var(--gap); padding-block: 0.9rem; }
.r-brand { display: inline-flex; line-height: 0; }
.r-brand img { height: 36px; width: auto; }
.r-nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; }
.r-nav a { color: var(--paper); text-decoration: none; padding: 0.35rem 0; border-bottom: 2px solid transparent; font-weight: 500; }
.r-nav a:hover { color: var(--white); border-bottom-color: var(--orange); }
.r-nav a[aria-current="page"] { border-bottom-color: var(--orange); }
.r-header :focus-visible, .r-footer :focus-visible { outline-color: var(--orange-light); }

/* Hero (home template) */
.r-hero { background: var(--navy); color: var(--paper); padding-block: clamp(2.5rem, 8vw, 6rem); }
.r-hero__title { color: var(--white); font-size: clamp(2rem, 5.5vw, 3.5rem); line-height: 1.1; margin: 0 0 1rem; letter-spacing: -0.01em; }
.r-hero a { color: var(--orange-light); }
.r-hero a:hover { color: var(--white); }
.r-hero__inner > :last-child { margin-bottom: 0; }
.r-hero .r-hero__title + * { font-size: 1.25rem; max-width: 40rem; }

/* Main */
.r-main { flex: 1 0 auto; padding-block: clamp(2rem, 5vw, 4rem); }
.r-title { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.15; margin: 0 0 1.5rem; letter-spacing: -0.01em; }
.r-prose { max-width: 46rem; }
.r-prose h1, .r-prose h2, .r-prose h3, .r-prose h4 { line-height: 1.25; margin: 2em 0 0.6em; }
.r-prose > :first-child { margin-top: 0; }
.r-prose h2 { font-size: 1.6rem; }
.r-prose h3 { font-size: 1.25rem; }
.r-prose p, .r-prose ul, .r-prose ol, .r-prose blockquote, .r-prose pre, .r-prose table { margin-block: 0 1.1em; }
.r-prose blockquote { border-left: 4px solid var(--orange); padding: 0.25rem 0 0.25rem 1rem; color: var(--fg-muted); }
.r-prose code { background: var(--bg-alt); padding: 0.1em 0.35em; border-radius: 4px; font-size: 0.92em; }
.r-prose pre { background: var(--bg-alt); padding: 1rem; border-radius: var(--radius); overflow-x: auto; }
.r-prose pre code { background: none; padding: 0; }
.r-prose table { width: 100%; border-collapse: collapse; }
.r-prose th, .r-prose td { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--line); }
.r-prose hr { border: 0; border-top: 1px solid var(--line); margin-block: 2rem; }
.r-prose img { border-radius: var(--radius); }

.r-button, .r-prose .am-btn, .r-prose a.am-btn {
	display: inline-block; background: var(--button-bg); color: var(--button-fg);
	padding: 0.7rem 1.3rem; border-radius: var(--radius); text-decoration: none; font-weight: 600;
}
.r-button:hover, .r-prose .am-btn:hover { background: var(--button-hover); color: var(--button-fg); }

/* Cards */
.r-cards { list-style: none; padding: 0; margin: clamp(2rem, 5vw, 3rem) 0 0; display: grid; gap: var(--gap); grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr)); }
.r-card { background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color 0.15s, transform 0.15s; }
.r-card:hover { border-color: var(--orange); transform: translateY(-2px); }
.r-card__link { display: flex; flex-direction: column; height: 100%; color: inherit; text-decoration: none; }
.r-card__img { aspect-ratio: 16 / 9; width: 100%; object-fit: cover; }
.r-card__body { display: flex; flex-direction: column; gap: 0.4rem; padding: 1.1rem 1.2rem 1.3rem; }
.r-card__title { font-size: 1.2rem; font-weight: 700; color: var(--fg); }
.r-card:hover .r-card__title { color: var(--link); }
.r-card__text { color: var(--fg-muted); font-size: 0.98rem; }

/* Centered variants */
.r-centered { text-align: center; }
.r-centered .r-prose, .r-centered.r-hero .r-prose { margin-inline: auto; }
.r-centered .r-prose blockquote { text-align: left; }
.r-hero.r-centered .r-prose { max-width: 46rem; }

/* Sidebar layout */
.r-sidelayout { display: grid; grid-template-columns: 15rem minmax(0, 1fr); gap: var(--gap); align-items: start; }
.r-sidelayout .r-main { width: auto; margin: 0; }
.r-side { padding-block: clamp(2rem, 5vw, 4rem); font-size: 0.97rem; }
.r-side__tree { list-style: none; margin: 0; padding: 0; }
.r-side__tree .r-side__tree { margin-left: 0.9rem; border-left: 1px solid var(--line); }
.r-side__item, .r-side summary a { display: block; padding: 0.3rem 0.6rem; color: var(--fg); text-decoration: none; border-radius: 6px; }
.r-side__item:hover, .r-side summary a:hover { background: var(--bg-alt); color: var(--link); }
.r-side [aria-current="page"] { font-weight: 700; box-shadow: inset 3px 0 0 var(--orange); background: var(--bg-alt); }
.r-side summary { cursor: pointer; }
@media (max-width: 48rem) {
	.r-sidelayout { grid-template-columns: 1fr; }
	.r-side { padding-bottom: 0; border-bottom: 1px solid var(--line); }
}

/* 404 */
.r-notfound__code { font-size: clamp(4rem, 15vw, 8rem); font-weight: 800; line-height: 1; margin: 0; color: var(--orange); }

/* Footer */
.r-footer { background: var(--navy); color: var(--paper); border-top: 3px solid var(--orange); font-size: 0.95rem; }
.r-footer__inner { display: grid; grid-template-columns: auto 1fr; gap: 1rem var(--gap); align-items: start; padding-block: 2rem; }
.r-footer__brand { line-height: 0; }
.r-footer__text > :first-child { margin-top: 0; }
.r-footer__text p { margin-block: 0 0.6rem; }
.r-footer__copy { color: #9aa4b8; margin-bottom: 0; }
.r-footer a { color: var(--orange-light); }
.r-footer a:hover { color: var(--white); }
.r-footer__nav { grid-column: 2; display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; }
@media (max-width: 36rem) {
	.r-footer__inner { grid-template-columns: 1fr; }
	.r-footer__nav { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}