/*
	Walter.tw — feuille de style du site (style « Bento aéré »)
	Pas de framework ni de build : CSS natif (variables, grid, flex, color-mix).
	Thème : automatique (prefers-color-scheme) + bouton qui pose data-theme="light|dark" sur <html>.
*/

/* ---------- Polices auto-hébergées (SIL Open Font License) ---------- */
@font-face {
	font-family: "Plus Jakarta Sans";
	src: url("../fonts/plus-jakarta-sans.woff2") format("woff2");
	font-weight: 200 800;
	font-style: normal;
	font-display: swap;
}
@font-face {
	font-family: "Open Sans";
	src: url("../fonts/open-sans.woff2") format("woff2");
	font-weight: 300 800;
	font-style: normal;
	font-display: swap;
}

/* ---------- Tokens (thème clair) ---------- */
:root {
	--bg: #F4F9FC;
	--surface: #FFFFFF;
	--ink: #4A5360;
	--heading: #1C2A35;
	--muted: #6A7581;
	--line: #E1E9EF;
	--accent: #1E8FC2;
	--accent-ink: #FFFFFF;
	--brand: #43B3E0;
	--band: #E6F3FA;
	--success: #1F8A5B;
	--danger: #C93C3C;
	/* Pastels des tuiles et vignettes */
	--c1: #D6EEF9;
	--c2: #FFE8C6;
	--c3: #D2F1E9;
	--c4: #DCE4FB;
	--display: "Plus Jakarta Sans", "Open Sans", system-ui, sans-serif;
	--body: "Open Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
	--mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
	--radius: 24px;
	--radius-sm: 14px;
	--shadow: 0 14px 34px -18px rgba(30, 90, 130, .35);
	--shadow-lg: 0 22px 44px -18px rgba(30, 90, 130, .45);
	--nav-h: 70px;
	color-scheme: light;
}

/* ---------- Thème sombre : système (sauf choix « clair ») et choix explicite ---------- */
@media (prefers-color-scheme: dark) {
	:root:not([data-theme="light"]) {
		--bg: #11171C; --surface: #19212A; --ink: #BFC8D0; --heading: #F0F5F8; --muted: #8B96A0; --line: #25313B;
		--accent: #5BC2EA; --accent-ink: #0E1418; --band: #142029; --success: #4CC38A; --danger: #F07070;
		--c1: #183447; --c2: #3A2F1C; --c3: #173A35; --c4: #222D4A;
		--shadow: 0 14px 34px -18px rgba(0, 0, 0, .7);
		--shadow-lg: 0 22px 44px -18px rgba(0, 0, 0, .8);
		color-scheme: dark;
	}
}
:root[data-theme="dark"] {
	--bg: #11171C; --surface: #19212A; --ink: #BFC8D0; --heading: #F0F5F8; --muted: #8B96A0; --line: #25313B;
	--accent: #5BC2EA; --accent-ink: #0E1418; --band: #142029; --success: #4CC38A; --danger: #F07070;
	--c1: #183447; --c2: #3A2F1C; --c3: #173A35; --c4: #222D4A;
	--shadow: 0 14px 34px -18px rgba(0, 0, 0, .7);
	--shadow-lg: 0 22px 44px -18px rgba(0, 0, 0, .8);
	color-scheme: dark;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); -webkit-text-size-adjust: 100%; }
body {
	margin: 0;
	min-height: 100vh;
	display: flex;
	flex-direction: column;
	background: var(--bg);
	color: var(--ink);
	font-family: var(--body);
	font-size: 1.0625rem;
	line-height: 1.65;
}
main { flex: 1; }
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3, h4 { font-family: var(--display); color: var(--heading); line-height: 1.15; letter-spacing: -.02em; text-wrap: balance; margin: 0 0 .5em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.5rem); font-weight: 800; letter-spacing: -.03em; }
h2 { font-size: clamp(1.6rem, 3.6vw, 2.4rem); font-weight: 800; }
h3 { font-size: 1.25rem; font-weight: 700; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
code, pre, .mono { font-family: var(--mono); font-size: .92em; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2em 0; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.muted { color: var(--muted); }
@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	*, *::before, *::after { animation: none !important; transition: none !important; }
}

.wrap {
	width: 100%;
	max-width: 1160px;
	margin-inline: auto;
	padding-left: max(16px, env(safe-area-inset-left, 0px));
	padding-right: max(16px, env(safe-area-inset-right, 0px));
}

/* Halos de couleur en fond */
.blobs { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.blobs i { position: absolute; width: 46vmax; aspect-ratio: 1; border-radius: 50%; filter: blur(70px); opacity: .45; animation: drift 24s ease-in-out infinite alternate; }
.blobs i:nth-child(1) { background: var(--c4); left: -12vmax; top: -10vmax; }
.blobs i:nth-child(2) { background: var(--c3); right: -14vmax; top: 30vh; animation-delay: -8s; }
.blobs i:nth-child(3) { background: var(--c1); left: 20vw; bottom: -20vmax; animation-delay: -16s; }
@keyframes drift { to { transform: translate(6vmax, 4vmax) scale(1.1); } }

/* ---------- Navigation ---------- */
.nav {
	position: sticky;
	top: 0;
	z-index: 50;
	padding-top: env(safe-area-inset-top, 0px);
	background: color-mix(in srgb, var(--bg) 80%, transparent);
	-webkit-backdrop-filter: blur(12px);
	backdrop-filter: blur(12px);
	border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 12px; min-height: var(--nav-h); }
.logo {
	display: inline-flex; align-items: center; justify-content: center;
	width: 46px; height: 46px; flex: none;
	border-radius: var(--radius-sm);
	background: var(--accent); color: var(--accent-ink);
	font-family: var(--display); font-weight: 800; font-size: 1.3rem; letter-spacing: -.02em;
	text-decoration: none;
}
.nav ul { list-style: none; display: flex; gap: 4px; margin: 0 0 0 auto; padding: 0; }
.nav ul a { display: block; padding: 8px 14px; border-radius: 999px; color: var(--heading); font-weight: 600; text-decoration: none; }
.nav ul a:hover, .nav ul a[aria-current="page"] { background: var(--band); color: var(--accent); }
.theme-btn {
	display: inline-flex; align-items: center; gap: 8px; flex: none;
	padding: 8px 14px; border-radius: 999px;
	border: 1px solid var(--line); background: var(--surface); color: var(--heading);
	box-shadow: var(--shadow);
	font: inherit; font-size: .9rem; font-weight: 600; cursor: pointer;
}
.theme-btn svg { width: 18px; height: 18px; }
@media (max-width: 560px) {
	.nav ul a { padding: 8px 10px; }
	.theme-btn .label { display: inline-block; width: 0; overflow: hidden; }
	.theme-btn { padding: 9px; gap: 0; }
}

/* ---------- Boutons ---------- */
.btn,
button:not(.theme-btn):not(.link),
input[type="submit"],
input[type="button"],
input[type="reset"] {
	display: inline-flex; align-items: center; justify-content: center; gap: 10px;
	padding: 13px 24px;
	border-radius: var(--radius-sm);
	border: 2px solid var(--accent);
	background: var(--accent); color: var(--accent-ink);
	font: inherit; font-weight: 700; line-height: 1.2;
	text-decoration: none; cursor: pointer;
	transition: transform .15s, box-shadow .15s, background-color .15s;
}
.btn:hover,
button:not(.theme-btn):not(.link):hover,
input[type="submit"]:hover,
input[type="button"]:hover,
input[type="reset"]:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn svg { width: 18px; height: 18px; flex: none; }
.btn.btn-alt,
button.btn-alt:not(.theme-btn):not(.link),
button[type="reset"]:not(.theme-btn):not(.link),
input[type="reset"],
input.btn-alt { background: transparent; color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 24px; }
.actions:first-child { margin-top: 0; }

/* ---------- Formulaires ---------- */
.form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form .full, .form .actions { grid-column: 1 / -1; }
.form .actions { margin-top: 4px; }
.field { display: grid; gap: 6px; min-width: 0; }
label, .label { font-weight: 700; font-size: .92rem; color: var(--heading); }
.hint { font-size: .88rem; color: var(--muted); }
input[type="text"], input[type="email"], input[type="url"], input[type="password"], input[type="search"], input[type="number"], input[type="file"], textarea, select {
	width: 100%;
	padding: 12px 14px;
	border-radius: var(--radius-sm);
	border: 1px solid var(--line);
	background: var(--bg);
	color: var(--heading);
	font: inherit;
}
select { width: auto; min-width: 6em; }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent); }
textarea { min-height: 150px; resize: vertical; }
input[type="file"] { padding: 8px; }
input[type="file"]::file-selector-button { margin-right: 12px; padding: 8px 14px; border: 0; border-radius: 10px; background: var(--band); color: var(--accent); font: inherit; font-weight: 700; cursor: pointer; }
textarea.mono, .mono textarea { font-family: var(--mono); font-size: .88rem; line-height: 1.5; }
input[readonly], textarea[readonly] { background: var(--band); }
@media (max-width: 640px) { .form { grid-template-columns: 1fr; } }

/* ---------- Tuiles ---------- */
.tile {
	background: var(--surface);
	border: 1px solid var(--line);
	border-radius: var(--radius);
	box-shadow: var(--shadow);
	padding: clamp(22px, 4vw, 44px);
	min-width: 0;
}
.eyebrow { font-size: .82rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }

/* ---------- Accueil : hero en bento ---------- */
.hero { padding-block: clamp(24px, 5vw, 56px) clamp(16px, 3vw, 32px); }
.bento { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 18px; }
.bento .intro { grid-column: span 8; }
.bento .intro h1 { font-size: clamp(2.3rem, 5.6vw, 4rem); margin-bottom: 12px; }
.bento .intro h1 span { color: var(--accent); }
.bento .intro .lead { font-size: clamp(1.08rem, 1.8vw, 1.25rem); max-width: 40ch; }
.bento .photo { grid-column: span 4; margin: 0; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: var(--brand); min-height: 260px; }
.bento .photo img { display: block; width: 100%; height: 100%; object-fit: cover; }
.stat { grid-column: span 6; border-radius: var(--radius); padding: 22px 26px; display: flex; flex-direction: column; justify-content: center; gap: 4px; min-width: 0; }
.stat.s1 { background: var(--c1); }
.stat.s2 { background: var(--c3); }
.stat strong { font-family: var(--display); font-size: 2.1rem; font-weight: 800; line-height: 1; letter-spacing: -.03em; color: var(--heading); }
.stat span { color: var(--ink); }
.links-card { display: inline-flex; align-items: center; gap: 12px; padding: 8px 20px 8px 8px; border-radius: 999px; background: var(--band); color: var(--heading); text-decoration: none; transition: transform .15s; }
.links-card:hover { transform: translateY(-2px); }
.links-card .ic { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; background: var(--brand); color: #FFFFFF; flex: none; }
.links-card .ic svg { width: 20px; height: 20px; }
.links-card small { display: block; font-size: .78rem; color: var(--muted); line-height: 1.2; }
.links-card strong { font-size: 1.1rem; line-height: 1.2; }
@media (max-width: 860px) {
	.bento .intro { grid-column: 1 / -1; }
	.bento .photo { grid-column: span 6; grid-row: span 2; min-height: 200px; }
}
@media (max-width: 480px) {
	.bento .photo { grid-column: 1 / -1; grid-row: auto; aspect-ratio: 1; min-height: 0; }
	.stat { grid-column: 1 / -1; }
}

/* ---------- Accueil : projets ---------- */
.section { padding-block: clamp(36px, 6vw, 72px); }
.sec-head { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 8px 24px; margin-bottom: 30px; }
.sec-head h2 { margin: 0; }
.sec-head p { color: var(--muted); max-width: 54ch; margin: 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 24px; }
.card {
	position: relative;
	display: flex; flex-direction: column;
	padding: 12px;
	background: var(--surface);
	border: 1px solid var(--line);
	border-radius: var(--radius);
	box-shadow: var(--shadow);
	transition: transform .18s, box-shadow .18s;
	min-width: 0;
}
.card:hover, .card:focus-within { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card .thumb { display: block; aspect-ratio: 480 / 242; border-radius: 16px; overflow: hidden; background: var(--c1); }
.card:nth-child(4n+2) .thumb { background: var(--c3); }
.card:nth-child(4n+3) .thumb { background: var(--c2); }
.card:nth-child(4n) .thumb { background: var(--c4); }
.card .thumb img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.card:hover .thumb img { transform: scale(1.04); }
.card-body { display: flex; flex-direction: column; gap: 6px; padding: 16px 8px 8px; flex: 1; }
.card h3 { margin: 0; font-size: 1.15rem; }
.card h3 a { color: var(--heading); text-decoration: none; }
.card h3 a::after { content: ""; position: absolute; inset: 0; border-radius: var(--radius); }
.card:hover h3 a { color: var(--accent); }
.card p { margin: 0; font-size: .97rem; }
.card p a { position: relative; z-index: 1; }

/* ---------- Accueil : contact ---------- */
.contact { background: linear-gradient(180deg, transparent, var(--band)); }
.contact-box { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 6fr); gap: clamp(24px, 5vw, 56px); border-radius: 30px; }
.contact-box ul { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 10px; }
.contact-box li a { display: inline-flex; gap: 10px; align-items: center; font-weight: 700; text-decoration: none; }
.contact-box li svg { width: 18px; height: 18px; flex: none; }
@media (max-width: 760px) { .contact-box { grid-template-columns: 1fr; } }

/* ---------- Pages outils (sncf, sms, get-to-post…) ---------- */
.page { padding-block: clamp(24px, 5vw, 56px); }
.page-head { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; margin-bottom: 8px; }
.page-head h1 { margin: 0; font-size: clamp(1.9rem, 4.6vw, 3rem); }
.page-head h1 a { color: inherit; text-decoration: none; }
.page-head .icon { width: 1.1em; height: 1.1em; vertical-align: -.12em; }
.page .tile + .tile { margin-top: 18px; }
.page .tile > .lead { font-size: 1.1rem; }
.stack { display: grid; gap: 18px; }
.stack > * { margin: 0; }
.notice { padding: 16px 20px; border-radius: var(--radius-sm); border: 1px solid; font-weight: 600; }
.notice.success { color: var(--success); border-color: color-mix(in srgb, var(--success) 40%, transparent); background: color-mix(in srgb, var(--success) 10%, transparent); }
.notice.error { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, transparent); background: color-mix(in srgb, var(--danger) 10%, transparent); }
.output { font-family: var(--display); font-size: clamp(1.2rem, 2.6vw, 1.6rem); font-weight: 700; color: var(--heading); line-height: 1.35; }
.output:empty { display: none; }
.error-page .bento .intro { display: flex; flex-direction: column; justify-content: center; }
.error-page .code { font-family: var(--display); font-weight: 800; font-size: clamp(4rem, 14vw, 9rem); line-height: 1; color: var(--accent); letter-spacing: -.05em; margin: 0 0 .1em; }

/* ---------- Pied de page & notifications ---------- */
.footer { padding-block: 28px calc(36px + env(safe-area-inset-bottom, 0px)); color: var(--muted); font-size: .92rem; border-top: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 70%, transparent); }
.footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 22px; justify-content: space-between; align-items: center; }
.footer ul { list-style: none; display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 0; padding: 0; }
.footer a { color: var(--muted); }
.footer a:hover { color: var(--accent); }
.toast {
	position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom, 0px)); z-index: 70;
	transform: translate(-50%, 160%);
	max-width: calc(100% - 32px);
	padding: 12px 22px; border-radius: 999px;
	background: var(--heading); color: var(--bg);
	font-weight: 700; box-shadow: var(--shadow-lg);
	visibility: hidden;
	transition: transform .3s, visibility 0s .3s;
}
.toast.show { transform: translate(-50%, 0); visibility: visible; transition: transform .3s; }
.toast.error { background: var(--danger); color: #FFFFFF; }