/* =============================================
   Electropol — Feuille de style principale
   ============================================= */

*, *::before, *::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

:root {
	--bleu-elec:   #0a6fc2;
	--bleu-fonce:  #04274a;
	--bleu-clair:  #7ec8f7;
	--blanc:       #f0f8ff;
	--gris-sombre: #0b1a2e;
	--accent:      #00c3ff;
}

html, body {
	height: 100%;
}

body {
	font-family: 'Segoe UI', Arial, sans-serif;
	background: linear-gradient(160deg, var(--gris-sombre) 0%, var(--bleu-fonce) 100%);
	color: var(--blanc);
	min-height: 100vh;
	display: flex;
	flex-direction: column;
	align-items: center;
}

/* ── En-tête / Bannière ── */
header {
	width: 100%;
	display: flex;
	justify-content: center;
	padding: 2rem 1rem 1rem;
	background: radial-gradient(ellipse at center top, rgba(0, 195, 255, 0.12) 0%, transparent 70%);
}

header img.banner {
	max-width: 700px;
	width: 90%;
	height: auto;
	filter: drop-shadow(0 0 24px rgba(0, 195, 255, 0.6));
	/* Fondu sur les quatre bords vers le fond de la page */
	-webkit-mask-image: radial-gradient(
		ellipse 85% 75% at 50% 50%,
		black 40%,
		transparent 100%
	);
	mask-image: radial-gradient(
		ellipse 85% 75% at 50% 50%,
		black 40%,
		transparent 100%
	);
}

/* ── Contenu principal ── */
main {
	flex: 1;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 2.5rem;
	padding: 3rem 1rem;
	width: 100%;
	max-width: 900px;
}

.tagline {
	font-size: 1.15rem;
	color: var(--bleu-clair);
	text-align: center;
	letter-spacing: 0.06em;
	text-transform: uppercase;
}

/* ── Grille de liens ── */
.links-grid {
	display: flex;
	flex-wrap: wrap;
	gap: 1.5rem;
	justify-content: center;
}

.card-link {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 0.75rem;
	text-decoration: none;
	background: rgba(10, 111, 194, 0.15);
	border: 1px solid rgba(0, 195, 255, 0.35);
	border-radius: 12px;
	padding: 2rem 2.5rem;
	width: 220px;
	transition: background 0.25s, border-color 0.25s, transform 0.2s, box-shadow 0.25s;
}

.card-link:hover {
	background: rgba(0, 195, 255, 0.22);
	border-color: var(--accent);
	transform: translateY(-4px);
	box-shadow: 0 8px 28px rgba(0, 195, 255, 0.35);
}

.card-link svg {
	width: 48px;
	height: 48px;
	fill: var(--accent);
	flex-shrink: 0;
}

.card-link span {
	font-size: 0.95rem;
	font-weight: 600;
	color: var(--blanc);
	text-align: center;
	letter-spacing: 0.03em;
}

/* ── Pied de page ── */
footer {
	width: 100%;
	text-align: center;
	padding: 1.25rem;
	font-size: 0.78rem;
	color: rgba(126, 200, 247, 0.5);
	border-top: 1px solid rgba(0, 195, 255, 0.1);
}