/* =====================================================
   STYLES.CSS - Loïc Sennepin Corporate Website
   ===================================================== */

/* =====================================================
   ROOT VARIABLES & RESET
   ===================================================== */

:root {
    /* Colors */
    --color-primary: #1a2332;
    --color-secondary: #c9a961;
    --color-bg: #f5f5f7;
    --color-white: #ffffff;
    --color-text: #1a1a1a;
    --color-text-light: #4a4a4a;
    --color-border: #e0e0e0;
    
    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Layout */
    --container-max: 1200px;
    --container-padding: 2rem;
    --header-height: 80px;
    
    /* Transitions */
    --transition: all 0.3s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* =====================================================
   UTILITIES
   ===================================================== */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* =====================================================
   BUTTONS
   ===================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background-color: var(--color-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-secondary);
    color: var(--color-secondary);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* =====================================================
   HEADER & NAVIGATION
   ===================================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.header.scroll-header {
    box-shadow: var(--shadow-md);
}

.nav {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-list {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-text);
    font-weight: 500;
    position: relative;
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-lang {
    padding: 0.5rem 1rem;
    font-weight: 600;
    color: var(--color-text-light);
}

.nav-lang:hover {
    color: var(--color-secondary);
}

.nav-toggle,
.nav-close {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-primary);
}

/* =====================================================
   HERO SECTION
   ===================================================== */

.hero {
    margin-top: var(--header-height);
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #f5f5f7 0%, #e8e8ea 100%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1.15;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-secondary);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-image img {
    width: 100%;
    height: 600px;
    object-fit: cover;
    object-position: 30% center;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    filter: grayscale(100%);
    transition: var(--transition);
}

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

/* =====================================================
   ABOUT SECTION
   ===================================================== */

.about {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.about-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.about-card {
    flex: 0 0 calc(33.333% - var(--spacing-md) * 2 / 3);
    max-width: calc(33.333% - var(--spacing-md) * 2 / 3);
    padding: var(--spacing-md);
    text-align: center;
    transition: var(--transition);
}


.about-card:hover {
    transform: translateY(-8px);
}

.about-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg);
    border-radius: 12px;
}

.about-icon svg {
    stroke: var(--color-secondary);
}

.about-card-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.about-card-text {
    color: var(--color-text-light);
    font-size: 1rem;
    line-height: 1.6;
}

.about-image-section {
    margin-top: var(--spacing-lg);
}

.about-image {
    width: 100%;
    max-width: 900px;
    height: 500px;
    object-fit: cover;
    object-position: 50% center;
    border-radius: 12px;
    margin: 0 auto;
    filter: grayscale(100%);
    box-shadow: var(--shadow-md);
}

/* =====================================================
   EXPERTISE SECTION
   ===================================================== */

.expertise {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.expertise-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.expertise-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-secondary);
    opacity: 0.2;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.expertise-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.expertise-description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
    line-height: 1.6;
}

.expertise-list {
    list-style: none;
    padding-left: 0;
}

.expertise-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.expertise-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: 700;
}

/* =====================================================
   RESULTS / TIMELINE SECTION
   ===================================================== */

.results {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--color-secondary);
}

.timeline-item {
    position: relative;
    padding-left: 100px;
    margin-bottom: var(--spacing-xl);
}

.timeline-marker {
    position: absolute;
    left: 28px;
    top: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--color-secondary);
    border: 4px solid var(--color-white);
    box-shadow: var(--shadow-sm);
}

.timeline-year {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xs);
}

.timeline-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-role {
    font-size: 1.125rem;
    color: var(--color-text-light);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.timeline-description {
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.timeline-achievements {
    list-style: none;
    margin-bottom: var(--spacing-sm);
}

.timeline-achievements li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.timeline-achievements li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: 900;
    font-size: 1.5rem;
    line-height: 1;
}

.timeline-quote {
    background-color: var(--color-bg);
    padding: var(--spacing-sm);
    border-left: 4px solid var(--color-secondary);
    border-radius: 4px;
    margin-top: var(--spacing-sm);
}

.timeline-quote p {
    font-style: italic;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.timeline-quote cite {
    font-style: normal;
    color: var(--color-text-light);
    font-size: 0.875rem;
    font-weight: 600;
}

.timeline-image {
    margin-top: var(--spacing-sm);
}

.timeline-image img {
    width: 100%;
    max-width: 600px;
    height: 300px;
    object-fit: cover;
    border-radius: 8px;
    filter: grayscale(100%);
    box-shadow: var(--shadow-sm);
}

/* =====================================================
   TESTIMONIALS SECTION
   ===================================================== */

.testimonials {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.testimonial-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.testimonial-text {
    font-size: 1.0625rem;
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.testimonial-author {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-sm);
}

.testimonial-author strong {
    display: block;
    color: var(--color-primary);
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.testimonial-author span {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* =====================================================
   INTERVENTIONS SECTION
   ===================================================== */

.interventions {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.interventions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.intervention-card {
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

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

.intervention-icon {
    width: 64px;
    height: 64px;
    background-color: var(--color-white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.intervention-icon svg {
    stroke: var(--color-secondary);
}

.intervention-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.intervention-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.intervention-meta span {
    font-size: 0.875rem;
    color: var(--color-text-light);
    padding: 0.25rem 0.75rem;
    background-color: var(--color-white);
    border-radius: 20px;
}

.intervention-description {
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.intervention-topics {
    list-style: none;
    margin-bottom: var(--spacing-sm);
    flex-grow: 1;
}

.intervention-topics li {
    margin-bottom: 0.75rem;
    color: var(--color-text);
    line-height: 1.5;
}

.intervention-topics strong {
    color: var(--color-primary);
}

.intervention-card .btn {
    width: 100%;
    justify-content: center;
    margin-top: auto;
}

/* =====================================================
   REFERENCES SECTION
   ===================================================== */

.references {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg);
}

.references-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.reference-logo {
    width: 180px;
    height: 120px;
    background-color: var(--color-white);
    border-radius: 12px;
    padding: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.reference-logo:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.reference-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition);
}

.reference-logo:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

.references-note {
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.875rem;
    font-style: italic;
}

/* =====================================================
   CONTACT SECTION
   ===================================================== */

.contact {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.contact-container {
    display: flex;
    justify-content: center;
}

.contact-info-centered {
    max-width: 700px;
    width: 100%;
}

.contact-info-centered h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.contact-item {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background-color: var(--color-bg);
    border-radius: 8px;
}

.contact-item svg {
    flex-shrink: 0;
    margin-top: 0.25rem;
    stroke: var(--color-secondary);
}

.contact-item strong {
    display: block;
    color: var(--color-primary);
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: var(--color-text-light);
    line-height: 1.6;
}

.contact-detail {
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.contact-item a {
    color: var(--color-secondary);
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-cta {
    margin-top: var(--spacing-lg);
    text-align: center;
}

/* =====================================================
   FOOTER
   ===================================================== */

.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-brand h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-location {
    margin-top: var(--spacing-xs);
    color: var(--color-secondary);
    font-weight: 600;
}

.footer h4 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.footer ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer a {
    color: rgba(255, 255, 255, 0.7);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.7);
    font-weight: 600;
}

/* =====================================================
   RESPONSIVE DESIGN
   ===================================================== */

@media screen and (max-width: 968px) {
    :root {
        --spacing-xl: 4rem;
        --spacing-lg: 3rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-image img {
        height: 400px;
    }
    
    .about-card {
    flex: 0 0 calc(50% - var(--spacing-md) / 2);
    max-width: calc(50% - var(--spacing-md) / 2);
	}

    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-marker {
        left: 8px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
}

@media screen and (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background-color: var(--color-white);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-lg) var(--spacing-md);
        flex-direction: column;
        align-items: flex-start;
        transition: var(--transition);
        z-index: 100;
    }
    
    .nav-menu.show-menu {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-link {
        padding: var(--spacing-sm) 0;
        width: 100%;
    }
    
    .nav-toggle,
    .nav-close {
        display: block;
    }
    
    .nav-close {
        position: absolute;
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .nav-actions {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-sm);
    }
    
    .nav-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
    
    .about-card {
    flex: 0 0 100%;
    max-width: 100%;
	}

    
    .expertise-grid,
    .testimonials-grid,
    .interventions-grid {
        grid-template-columns: 1fr;
    }
    
    .references-logos {
        flex-direction: column;
    }
    
    .reference-logo {
        width: 100%;
        max-width: 200px;
    }
}

@media screen and (max-width: 480px) {
    :root {
        --container-padding: 1rem;
        --spacing-xl: 3rem;
        --spacing-lg: 2rem;
    }
    
    .hero {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .hero-image img {
        height: 300px;
    }
    
    .about-image {
        height: 300px;
    }
    
    .timeline-image img {
        height: 200px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* =====================================================
   ANIMATIONS & SCROLL EFFECTS
   ===================================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

section {
    scroll-margin-top: var(--header-height);
}

@media print {
    .header,
    .nav,
    .btn {
        display: none;
    }
    
    body {
        background-color: white;
    }
    
    .section-title {
        page-break-after: avoid;
    }
}