/* ================================================
   SODEV — Site vitrine
   Génie Civil · Énergie · Télécommunications
   ================================================ */

:root {
	--c-primary: #0f2b46;
	--c-accent: #c0271d;
	--c-accent-dark: #9e1f17;
	--c-dark: #0a1628;
	--c-text: #3a3f47;
	--c-text-light: #6b7280;
	--c-bg: #ffffff;
	--c-bg-alt: #f7f8fa;
	--c-border: #e5e7eb;
	--ff-heading: 'Playfair Display', Georgia, serif;
	--ff-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
	--shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
	--shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
	--shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
	--radius: 8px;
	--transition: 0.3s ease;
}

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

html {
	scroll-behavior: smooth;
	scroll-padding-top: 80px;
}

body {
	font-family: var(--ff-body);
	font-size: 16px;
	line-height: 1.7;
	color: var(--c-text);
	background: var(--c-bg);
	-webkit-font-smoothing: antialiased;
}

img {
	max-width: 100%;
	display: block;
}
a {
	text-decoration: none;
	color: inherit;
}
ul {
	list-style: none;
}

.container {
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 24px;
}

/* ————— Header ————— */

.header {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 1000;
	background: rgba(255, 255, 255, 0.92);
	backdrop-filter: blur(12px);
	border-bottom: 1px solid transparent;
	transition: var(--transition);
}

.header.scrolled {
	border-bottom-color: var(--c-border);
	box-shadow: var(--shadow-sm);
}

.header .container {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: 72px;
}

.logo {
	display: inline-flex;
	align-items: center;
}

.logo-img {
	height: 85px;
	width: auto;
}

.logo-img-footer {
	height: 65px;
	filter: brightness(0) invert(1);
}
}

.nav {
	display: flex;
	gap: 32px;
}

.nav-link {
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--c-text);
	position: relative;
	transition: color var(--transition);
}

.nav-link::after {
	content: '';
	position: absolute;
	bottom: -4px;
	left: 0;
	width: 0;
	height: 2px;
	background: var(--c-accent);
	transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
	color: var(--c-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
	width: 100%;
}

.nav-toggle {
	display: none;
	flex-direction: column;
	gap: 5px;
	background: none;
	border: none;
	cursor: pointer;
	padding: 4px;
}

.nav-toggle span {
	display: block;
	width: 24px;
	height: 2px;
	background: var(--c-primary);
	transition: var(--transition);
	border-radius: 2px;
}

/* ————— Hero ————— */

.hero {
	position: relative;
	min-height: 100vh;
	display: flex;
	align-items: center;
	background: linear-gradient(
		135deg,
		var(--c-primary) 0%,
		#163d5e 50%,
		#1a4a6e 100%
	);
	overflow: hidden;
}

.hero::before {
	content: '';
	position: absolute;
	inset: 0;
	background:
		radial-gradient(
			ellipse at 20% 80%,
			rgba(212, 162, 78, 0.15) 0%,
			transparent 50%
		),
		radial-gradient(
			ellipse at 80% 20%,
			rgba(255, 255, 255, 0.05) 0%,
			transparent 40%
		);
}

.hero-overlay {
	position: absolute;
	inset: 0;
	background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
	position: relative;
	z-index: 1;
	padding: 120px 0 80px;
	max-width: 720px;
}

.hero-subtitle {
	font-size: 0.85rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 3px;
	color: var(--c-accent);
	margin-bottom: 20px;
}

.hero-title {
	font-family: var(--ff-heading);
	font-size: clamp(2.5rem, 5.5vw, 4.2rem);
	font-weight: 700;
	line-height: 1.15;
	color: #fff;
	margin-bottom: 24px;
}

.hero-title em {
	font-style: italic;
	color: var(--c-accent);
}

.hero-text {
	font-size: 1.1rem;
	line-height: 1.8;
	color: rgba(255, 255, 255, 0.75);
	margin-bottom: 40px;
	max-width: 560px;
}

.hero-actions {
	display: flex;
	gap: 16px;
	flex-wrap: wrap;
}

/* ————— Boutons ————— */

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 14px 32px;
	font-family: var(--ff-body);
	font-size: 0.9rem;
	font-weight: 600;
	border-radius: var(--radius);
	border: 2px solid transparent;
	cursor: pointer;
	transition: all var(--transition);
}

.btn-primary {
	background: var(--c-accent);
	color: #fff;
	border-color: var(--c-accent);
}

.btn-primary:hover {
	background: var(--c-accent-dark);
	border-color: var(--c-accent-dark);
	transform: translateY(-1px);
	box-shadow: 0 4px 12px rgba(192, 39, 29, 0.35);
}

.btn-outline {
	background: transparent;
	color: #fff;
	border-color: rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
	border-color: #fff;
	background: rgba(255, 255, 255, 0.08);
}

.btn-full {
	width: 100%;
}

/* ————— Stats ————— */

.stats {
	background: var(--c-dark);
	padding: 48px 0;
}

.stats-grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 32px;
	text-align: center;
}

.stat-number {
	font-family: var(--ff-heading);
	font-size: 2.8rem;
	font-weight: 700;
	color: var(--c-accent);
	line-height: 1;
}

.stat-suffix {
	font-family: var(--ff-heading);
	font-size: 2rem;
	color: var(--c-accent);
}

.stat-label {
	font-size: 0.85rem;
	color: rgba(255, 255, 255, 0.6);
	margin-top: 8px;
	font-weight: 500;
}

/* ————— Sections ————— */

.section {
	padding: 100px 0;
}

.section-header {
	text-align: center;
	margin-bottom: 64px;
}

.section-tag {
	display: inline-block;
	font-size: 0.75rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 2.5px;
	color: var(--c-accent);
	margin-bottom: 12px;
}

.section-title {
	font-family: var(--ff-heading);
	font-size: clamp(1.8rem, 3.5vw, 2.6rem);
	font-weight: 700;
	color: var(--c-primary);
	line-height: 1.25;
}

/* ————— À propos ————— */

.about {
	background: var(--c-bg);
}

.about-grid {
	display: grid;
	grid-template-columns: 1.1fr 1fr;
	gap: 64px;
	align-items: start;
}

.about-text p {
	margin-bottom: 20px;
	color: var(--c-text);
	font-size: 0.95rem;
}

.about-text strong {
	color: var(--c-primary);
	font-weight: 600;
}

.about-values {
	display: flex;
	flex-direction: column;
	gap: 20px;
}

.value-card {
	padding: 28px;
	background: var(--c-bg-alt);
	border-radius: var(--radius);
	border: 1px solid var(--c-border);
	transition: var(--transition);
}

.value-card:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-md);
	border-color: var(--c-accent);
}

.value-icon {
	width: 40px;
	height: 40px;
	color: var(--c-accent);
	margin-bottom: 12px;
}

.value-icon svg {
	width: 100%;
	height: 100%;
}

.value-card h3 {
	font-family: var(--ff-heading);
	font-size: 1.15rem;
	color: var(--c-primary);
	margin-bottom: 8px;
}

.value-card p {
	font-size: 0.875rem;
	color: var(--c-text-light);
}

/* ————— Services ————— */

.services {
	background: var(--c-bg-alt);
}

.services-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 28px;
}

.service-card {
	background: var(--c-bg);
	border-radius: var(--radius);
	padding: 40px 32px;
	border: 1px solid var(--c-border);
	transition: all var(--transition);
	position: relative;
	overflow: hidden;
}

.service-card::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 3px;
	background: var(--c-accent);
	transform: scaleX(0);
	transform-origin: left;
	transition: transform var(--transition);
}

.service-card:hover::before {
	transform: scaleX(1);
}

.service-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-lg);
}

.service-card.featured {
	background: var(--c-primary);
	border-color: var(--c-primary);
}

.service-card.featured::before {
	background: var(--c-accent);
}

.service-card.featured h3,
.service-card.featured p {
	color: #fff;
}

.service-card.featured .service-icon {
	color: var(--c-accent);
}

.service-card.featured .service-list li {
	color: rgba(255, 255, 255, 0.7);
}

.service-card.featured .service-list li::before {
	color: var(--c-accent);
}

.service-icon {
	width: 48px;
	height: 48px;
	color: var(--c-primary);
	margin-bottom: 24px;
}

.service-icon svg {
	width: 100%;
	height: 100%;
}

.service-card h3 {
	font-family: var(--ff-heading);
	font-size: 1.35rem;
	color: var(--c-primary);
	margin-bottom: 14px;
}

.service-card > p {
	font-size: 0.9rem;
	color: var(--c-text-light);
	margin-bottom: 24px;
}

.service-list {
	display: flex;
	flex-direction: column;
	gap: 10px;
}

.service-list li {
	font-size: 0.85rem;
	color: var(--c-text);
	padding-left: 20px;
	position: relative;
}

.service-list li::before {
	content: '—';
	position: absolute;
	left: 0;
	color: var(--c-accent);
	font-weight: 700;
}

/* ————— Réalisations ————— */

.realisations {
	background: var(--c-bg);
}

.projects-grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 20px;
}

.project-card {
	position: relative;
	border-radius: var(--radius);
	overflow: hidden;
	min-height: 280px;
	cursor: pointer;
}

.project-card.project-large {
	grid-column: span 2;
}

.project-img {
	position: absolute;
	inset: 0;
	background-size: cover;
	background-position: center;
	transition: transform 0.5s ease;
}

.project-card:hover .project-img {
	transform: scale(1.05);
}

.project-with-img {
	position: relative;
}

.project-img-real {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform .5s ease;
}

.project-card:hover .project-img-real {
	transform: scale(1.05);
}

.project-overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(
		to top,
		rgba(10, 22, 40, 0.9) 0%,
		rgba(10, 22, 40, 0.2) 60%,
		transparent 100%
	);
	padding: 28px;
	display: flex;
	flex-direction: column;
	justify-content: flex-end;
	transition: background var(--transition);
}

.project-card:hover .project-overlay {
	background: linear-gradient(
		to top,
		rgba(10, 22, 40, 0.95) 0%,
		rgba(10, 22, 40, 0.4) 60%,
		rgba(10, 22, 40, 0.1) 100%
	);
}

.project-cat {
	font-size: 0.7rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 2px;
	color: var(--c-accent);
	margin-bottom: 8px;
}

.project-overlay h3 {
	font-family: var(--ff-heading);
	font-size: 1.15rem;
	color: #fff;
	margin-bottom: 6px;
	line-height: 1.3;
}

.project-overlay p {
	font-size: 0.8rem;
	color: rgba(255, 255, 255, 0.65);
	opacity: 0;
	transform: translateY(8px);
	transition: all 0.3s ease;
}

.project-card:hover .project-overlay p {
	opacity: 1;
	transform: translateY(0);
}

/* ————— Équipe ————— */

.equipe {
	background: var(--c-bg-alt);
}

.team-grid {
	display: grid;
	grid-template-columns: repeat(5, 1fr);
	gap: 24px;
}

.team-card {
	text-align: center;
	padding: 36px 16px;
	background: var(--c-bg);
	border-radius: var(--radius);
	border: 1px solid var(--c-border);
	transition: all var(--transition);
}

.team-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-md);
	border-color: var(--c-accent);
}

.team-avatar {
	width: 72px;
	height: 72px;
	border-radius: 50%;
	background: linear-gradient(135deg, var(--c-primary), #1e4d6e);
	display: flex;
	align-items: center;
	justify-content: center;
	margin: 0 auto 20px;
}

.team-avatar span {
	font-family: var(--ff-heading);
	font-size: 1.2rem;
	font-weight: 700;
	color: var(--c-accent);
}

.team-card h3 {
	font-family: var(--ff-heading);
	font-size: 1rem;
	color: var(--c-primary);
	margin-bottom: 6px;
}

.team-role {
	font-size: 0.8rem;
	font-weight: 600;
	color: var(--c-accent-dark);
	margin-bottom: 4px;
}

.team-detail {
	font-size: 0.75rem;
	color: var(--c-text-light);
}

/* ————— Contact ————— */

.contact {
	background: var(--c-bg);
}

.contact-grid {
	display: grid;
	grid-template-columns: 1fr 1.3fr;
	gap: 64px;
	align-items: start;
}

.contact-info {
	display: flex;
	flex-direction: column;
	gap: 32px;
}

.contact-item {
	display: flex;
	gap: 16px;
	align-items: flex-start;
}

.contact-icon {
	width: 44px;
	height: 44px;
	min-width: 44px;
	border-radius: 50%;
	background: var(--c-bg-alt);
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--c-accent);
}

.contact-icon svg {
	width: 20px;
	height: 20px;
}

.contact-item h4 {
	font-size: 0.9rem;
	font-weight: 600;
	color: var(--c-primary);
	margin-bottom: 4px;
}

.contact-item p {
	font-size: 0.875rem;
	color: var(--c-text-light);
	line-height: 1.6;
}

.contact-form {
	display: flex;
	flex-direction: column;
	gap: 20px;
}

.form-row {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 20px;
}

.form-group label {
	display: block;
	font-size: 0.8rem;
	font-weight: 600;
	color: var(--c-primary);
	margin-bottom: 8px;
	text-transform: uppercase;
	letter-spacing: 1px;
}

.form-group input,
.form-group textarea {
	width: 100%;
	padding: 14px 16px;
	font-family: var(--ff-body);
	font-size: 0.9rem;
	color: var(--c-text);
	background: var(--c-bg-alt);
	border: 1px solid var(--c-border);
	border-radius: var(--radius);
	transition: all var(--transition);
	outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
	border-color: var(--c-accent);
	box-shadow: 0 0 0 3px rgba(212, 162, 78, 0.12);
}

.form-group textarea {
	resize: vertical;
}

.form-status {
	font-size: 0.85rem;
	font-weight: 500;
	text-align: center;
	margin-top: 4px;
	min-height: 1.2em;
}

.form-status.success {
	color: #2c5f2d;
}
.form-status.error {
	color: #c0392b;
}

/* ————— Footer ————— */

.footer {
	background: var(--c-dark);
	padding: 64px 0 0;
}

.footer-grid {
	display: grid;
	grid-template-columns: 1.5fr 1fr 1fr 1fr;
	gap: 48px;
	padding-bottom: 48px;
	border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
	font-size: 0.875rem;
	color: rgba(255, 255, 255, 0.5);
	margin-top: 12px;
}

.footer-slogan {
	font-family: var(--ff-heading);
	font-style: italic;
	color: var(--c-accent) !important;
	margin-top: 8px !important;
}

.footer-links h4 {
	font-size: 0.8rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 1.5px;
	color: rgba(255, 255, 255, 0.4);
	margin-bottom: 16px;
}

.footer-links a,
.footer-links p {
	display: block;
	font-size: 0.875rem;
	color: rgba(255, 255, 255, 0.6);
	margin-bottom: 10px;
	transition: color var(--transition);
}

.footer-links a:hover {
	color: var(--c-accent);
}

.footer-bottom {
	padding: 24px 0;
	text-align: center;
}

.footer-bottom p {
	font-size: 0.75rem;
	color: rgba(255, 255, 255, 0.3);
}

/* ————— Références ————— */

.references {
	background: var(--c-bg-alt);
}

.references-track {
	overflow: hidden;
	position: relative;
	padding: 20px 0;
}

.references-track::before,
.references-track::after {
	content: '';
	position: absolute;
	top: 0;
	bottom: 0;
	width: 80px;
	z-index: 2;
	pointer-events: none;
}

.references-track::before {
	left: 0;
	background: linear-gradient(to right, var(--c-bg-alt), transparent);
}

.references-track::after {
	right: 0;
	background: linear-gradient(to left, var(--c-bg-alt), transparent);
}

.references-slide {
	display: flex;
	gap: 32px;
	animation: scroll-refs 25s linear infinite;
	width: max-content;
}

.ref-item {
	flex-shrink: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 20px 36px;
	background: var(--c-bg);
	border: 1px solid var(--c-border);
	border-radius: var(--radius);
	transition: all var(--transition);
	min-width: 180px;
}

.ref-item:hover {
	border-color: var(--c-accent);
	box-shadow: var(--shadow-md);
	transform: translateY(-2px);
}

.ref-logo {
	max-height: 48px;
	max-width: 140px;
	width: auto;
	object-fit: contain;
	transition: all var(--transition);
}

.ref-name {
	font-family: var(--ff-heading);
	font-size: 1rem;
	font-weight: 700;
	color: var(--c-primary);
	text-align: center;
	white-space: nowrap;
}

@keyframes scroll-refs {
	0% { transform: translateX(0); }
	100% { transform: translateX(-50%); }
}


/* ————— Animations ————— */

.fade-up {
	opacity: 0;
	transform: translateY(30px);
	transition:
		opacity 0.6s ease,
		transform 0.6s ease;
}

.fade-up.visible {
	opacity: 1;
	transform: translateY(0);
}

/* ————— Responsive ————— */

@media (max-width: 1024px) {
	.services-grid {
		grid-template-columns: 1fr;
	}
	.team-grid {
		grid-template-columns: repeat(3, 1fr);
	}
	.projects-grid {
		grid-template-columns: repeat(2, 1fr);
	}
	.project-card.project-large {
		grid-column: span 2;
	}
	.footer-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 768px) {
	.nav {
		display: none;
		position: absolute;
		top: 72px;
		left: 0;
		right: 0;
		background: rgba(255, 255, 255, 0.98);
		backdrop-filter: blur(12px);
		flex-direction: column;
		padding: 24px;
		gap: 0;
		border-bottom: 1px solid var(--c-border);
		box-shadow: var(--shadow-md);
	}

	.nav.open {
		display: flex;
	}

	.nav-link {
		padding: 14px 0;
		border-bottom: 1px solid var(--c-border);
		font-size: 1rem;
	}

	.nav-link:last-child {
		border-bottom: none;
	}

	.nav-toggle {
		display: flex;
	}

	.nav-toggle.active span:nth-child(1) {
		transform: rotate(45deg) translate(5px, 5px);
	}
	.nav-toggle.active span:nth-child(2) {
		opacity: 0;
	}
	.nav-toggle.active span:nth-child(3) {
		transform: rotate(-45deg) translate(5px, -5px);
	}

	.hero-content {
		padding: 100px 0 60px;
	}

	.stats-grid {
		grid-template-columns: repeat(2, 1fr);
		gap: 24px;
	}

	.about-grid {
		grid-template-columns: 1fr;
		gap: 40px;
	}

	.contact-grid {
		grid-template-columns: 1fr;
		gap: 48px;
	}

	.team-grid {
		grid-template-columns: repeat(2, 1fr);
	}

	.projects-grid {
		grid-template-columns: 1fr;
	}
	.project-card.project-large {
		grid-column: span 1;
	}

	.form-row {
		grid-template-columns: 1fr;
	}
	.footer-grid {
		grid-template-columns: 1fr;
		gap: 32px;
	}

	.section {
		padding: 72px 0;
	}
}

@media (max-width: 480px) {
	.hero-title {
		font-size: 2rem;
	}
	.hero-actions {
		flex-direction: column;
	}
	.btn {
		padding: 12px 24px;
		width: 100%;
	}
	.team-grid {
		grid-template-columns: 1fr;
	}
	.stat-number {
		font-size: 2.2rem;
	}
}