/* COUVERTURE DE L'HELPE - BRUTALIST DESIGN */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-black: #0a0a0a;
    --color-white: #ffffff;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    --font-primary: 'Space Grotesk', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    --space-4xl: 8rem;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    background: var(--color-white);
    color: var(--color-black);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* HEADER */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    background: transparent;
    mix-blend-mode: difference;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--space-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-white);
}

.logo-text {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    border: 2px solid currentColor;
    padding: 0.25rem 0.5rem;
}

.logo-full {
    font-family: var(--font-primary);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: none;
}

@media (min-width: 768px) {
    .logo-full {
        display: block;
    }
}

/* MENU TOGGLE */
.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 10px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger-line {
    width: 32px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition-base);
}

.menu-toggle:hover .hamburger-line {
    transform: scaleX(0.8);
}

.menu-toggle:hover .hamburger-line:nth-child(2) {
    transform: scaleX(1);
}

/* OFF-CANVAS MENU */
.menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 1001;
}

.menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.off-canvas-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 500px;
    height: 100vh;
    background: var(--color-black);
    color: var(--color-white);
    z-index: 1002;
    transition: right var(--transition-slow);
    display: flex;
    flex-direction: column;
    padding: var(--space-xl);
}

.off-canvas-menu.active {
    right: 0;
}

.menu-header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: var(--space-3xl);
}

.menu-close {
    font-size: 2.5rem;
    font-weight: 300;
    cursor: pointer;
    transition: var(--transition-fast);
    line-height: 1;
}

.menu-close:hover {
    transform: rotate(90deg);
}

.menu-list {
    list-style: none;
    flex: 1;
}

.menu-list li {
    border-top: 1px solid var(--color-gray-800);
}

.menu-list li:last-child {
    border-bottom: 1px solid var(--color-gray-800);
}

.menu-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    font-family: var(--font-primary);
    font-size: 2rem;
    font-weight: 500;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.menu-link::before {
    content: attr(data-index);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-gray-500);
    min-width: 24px;
}

.menu-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition-base);
}

.menu-link:hover {
    padding-left: var(--space-md);
}

.menu-link:hover::after {
    width: 100%;
}

.menu-footer {
    margin-top: auto;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-gray-800);
}

.menu-footer p {
    font-family: var(--font-primary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.menu-footer-sub {
    color: var(--color-gray-500);
    margin-top: var(--space-xs);
}

/* HERO */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--color-black);
}

.hero-video-container {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
}

.hero-video-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.6) 50%, rgba(0, 0, 0, 0.8));
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    padding: var(--space-lg);
    max-width: 1000px;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.tag-line {
    width: 40px;
    height: 1px;
    background: var(--color-white);
}

.tag-text {
    font-family: var(--font-primary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

.hero-title {
    font-size: clamp(3rem, 12vw, 9rem);
    font-weight: 700;
    line-height: 0.9;
    letter-spacing: -0.05em;
    margin-bottom: var(--space-lg);
}

.title-line {
    display: block;
}

.title-line:nth-child(2) {
    font-weight: 300;
    font-style: italic;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--color-gray-300);
    margin-bottom: var(--space-2xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--color-white);
    color: var(--color-black);
}

.btn-primary:hover {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-black);
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-xl);
    right: var(--space-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-white);
    z-index: 2;
}

.scroll-text {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    writing-mode: vertical-rl;
    text-orientation: mixed;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-white), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {

    0%,
    100% {
        opacity: 1;
        transform: scaleY(1);
    }

    50% {
        opacity: 0.5;
        transform: scaleY(0.8);
    }
}

/* SECTIONS COMMON */
section {
    padding: var(--space-4xl) 0;
}

.section-header {
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
    margin-bottom: var(--space-3xl);
}

.section-number {
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-gray-400);
}

.section-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
}

.section-intro {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    max-width: 600px;
    margin-bottom: var(--space-3xl);
}

/* EXPERTISE */
.expertise {
    background: var(--color-white);
}

.expertise-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
}

@media (min-width: 992px) {
    .expertise-grid {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
}

.expertise-intro {
    font-family: var(--font-primary);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 400;
    line-height: 1.4;
    margin-bottom: var(--space-lg);
}

.expertise-intro strong {
    font-weight: 600;
}

.expertise-desc {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    line-height: 1.8;
    margin-bottom: var(--space-2xl);
}

.expertise-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-gray-200);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-primary);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-500);
}

.expertise-visual {
    position: relative;
}

.expertise-image-wrapper {
    position: relative;
    overflow: hidden;
}

.expertise-image-wrapper::before {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--color-black);
    z-index: -1;
}

.expertise-image {
    filter: grayscale(100%);
    transition: var(--transition-slow);
}

.expertise-image-wrapper:hover .expertise-image {
    filter: grayscale(0%);
    transform: scale(1.02);
}

/* SERVICES */
.services {
    background: var(--color-gray-100);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-md);
}

.service-card {
    position: relative;
    background: var(--color-white);
    padding: var(--space-xl);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition-base);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 4px;
    background: var(--color-black);
    transition: var(--transition-slow);
}

.service-card:hover {
    border-color: var(--color-black);
    transform: translateY(-4px);
}

.service-card:hover::before {
    width: 100%;
}

.service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-lg);
    color: var(--color-black);
}

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

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.service-desc {
    color: var(--color-gray-600);
    line-height: 1.7;
}

.service-number {
    position: absolute;
    bottom: var(--space-md);
    right: var(--space-md);
    font-family: var(--font-primary);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-gray-100);
    line-height: 1;
    transition: var(--transition-base);
}

.service-card:hover .service-number {
    color: var(--color-gray-200);
}

/* REALISATIONS */
.realisations {
    background: var(--color-white);
}

.realisations-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 300px);
    gap: var(--space-md);
}

@media (max-width: 992px) {
    .realisations-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
    }
}

@media (max-width: 576px) {
    .realisations-grid {
        grid-template-columns: 1fr;
    }
}

.realisation-card {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.realisation-large {
    grid-column: span 2;
    grid-row: span 2;
}

.realisation-wide {
    grid-column: span 2;
}

@media (max-width: 992px) {

    .realisation-large,
    .realisation-wide {
        grid-column: span 1;
        grid-row: span 1;
    }
}

.realisation-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: var(--transition-slow);
}

.realisation-card:hover .realisation-image {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.realisation-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-lg);
    color: var(--color-white);
    opacity: 0;
    transition: var(--transition-base);
}

.realisation-card:hover .realisation-overlay {
    opacity: 1;
}

.realisation-category {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-gray-300);
    margin-bottom: var(--space-xs);
}

.realisation-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.realisation-location {
    font-size: 0.875rem;
    color: var(--color-gray-400);
}

/* EQUIPE */
.equipe {
    background: var(--color-gray-100);
}

.equipe-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

@media (max-width: 992px) {
    .equipe-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .equipe-grid {
        grid-template-columns: 1fr;
    }
}

.membre-card {
    position: relative;
    overflow: hidden;
    aspect-ratio: 3/4;
    cursor: pointer;
}

.membre-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: var(--transition-slow);
}

.membre-card:hover .membre-image {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.membre-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.7) 40%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-xl);
    color: var(--color-white);
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-base);
}

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

.membre-nom {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    letter-spacing: -0.02em;
}

.membre-poste {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-gray-300);
    margin-bottom: var(--space-md);
    display: block;
}

.membre-bio {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--color-gray-400);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}

.membre-card:hover .membre-bio {
    max-height: 150px;
}

/* VALEURS */
.valeurs {
    background: var(--color-black);
    color: var(--color-white);
    padding: var(--space-4xl) 0;
}

.valeurs-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
}

@media (min-width: 992px) {
    .valeurs-content {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }
}

.valeurs-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.valeurs-desc {
    font-size: 1.25rem;
    color: var(--color-gray-400);
    line-height: 1.8;
}

.valeurs-desc strong {
    color: var(--color-white);
    font-weight: 500;
}

.valeurs-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.valeur-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    padding: var(--space-lg);
    border: 1px solid var(--color-gray-800);
    transition: var(--transition-base);
}

.valeur-item:hover {
    border-color: var(--color-white);
    background: var(--color-gray-900);
}

.valeur-number {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-gray-500);
    min-width: 40px;
}

.valeur-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.valeur-content p {
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

/* CONTACT */
.contact {
    background: var(--color-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
}

@media (min-width: 992px) {
    .contact-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.contact-heading {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.contact-desc {
    color: var(--color-gray-600);
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--space-2xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.contact-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-gray-500);
}

.contact-value {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

a.contact-value:hover {
    color: var(--color-gray-600);
}

/* CONTACT FORM */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

@media (max-width: 576px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-gray-600);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--space-md);
    border: 1px solid var(--color-gray-300);
    background: var(--color-white);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-black);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    background: var(--color-black);
    color: var(--color-white);
    border: 2px solid var(--color-black);
    margin-top: var(--space-md);
}

.btn-submit:hover {
    background: var(--color-white);
    color: var(--color-black);
}

/* FOOTER */
.footer {
    background: var(--color-black);
    color: var(--color-white);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    text-align: center;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: auto 1fr auto;
        text-align: left;
        align-items: start;
    }
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

@media (min-width: 768px) {
    .footer-brand {
        align-items: flex-start;
    }
}

.footer-logo {
    font-family: var(--font-primary);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    border: 2px solid currentColor;
    padding: 0.25rem 0.75rem;
}

.footer-tagline {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    line-height: 1.6;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md) var(--space-xl);
    justify-content: center;
}

@media (min-width: 768px) {
    .footer-links {
        justify-content: flex-end;
    }
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    transition: var(--transition-fast);
}

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

.footer-legal {
    grid-column: 1 / -1;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
}

.footer-legal p {
    font-size: 0.75rem;
    color: var(--color-gray-600);
}

.footer-mentions {
    margin-top: var(--space-xs);
}

/* UTILITIES */
::selection {
    background: var(--color-black);
    color: var(--color-white);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--color-gray-400);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-600);
}