/* ============================================
   ROOT VARIABLES & RESET
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #0f2b4b;
    --color-primary-light: #1a3f66;
    --color-primary-dark: #091d33;
    --color-accent: #2d8bcb;
    --color-accent-light: #4da3df;
    --color-gold: #d4a843;
    --color-gold-light: #e8c86a;
    --color-text: #1e293b;
    --color-text-light: #475569;
    --color-text-muted: #94a3b8;
    --color-bg: #f8fafc;
    --color-white: #ffffff;
    --color-border: #e9edf2;
    --shadow-sm: 0 1px 3px rgba(15, 43, 75, 0.06), 0 1px 2px rgba(15, 43, 75, 0.04);
    --shadow-md: 0 4px 16px rgba(15, 43, 75, 0.08), 0 2px 8px rgba(15, 43, 75, 0.04);
    --shadow-lg: 0 12px 40px rgba(15, 43, 75, 0.12), 0 4px 16px rgba(15, 43, 75, 0.06);
    --shadow-xl: 0 20px 60px rgba(15, 43, 75, 0.16);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --max-width: 1280px;
    --header-height: 76px;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    padding-top: var(--header-height);
}

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
.section-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent);
    background: rgba(45, 139, 203, 0.10);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 16px;
}
.section-label i {
    font-size: 0.7rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--color-primary);
}
.section-title .highlight {
    color: var(--color-accent);
}
.section-title .gold {
    color: var(--color-gold);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 680px;
    margin-top: 12px;
    line-height: 1.7;
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid rgba(233, 237, 242, 0.6);
    height: var(--header-height);
    transition: box-shadow var(--transition);
}
.header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(145deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
    box-shadow: 0 4px 12px rgba(15, 43, 75, 0.20);
}
.logo-text {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    color: var(--color-primary);
}
.logo-text span {
    color: var(--color-accent);
}

.nav {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav a {
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-light);
    transition: all var(--transition);
    position: relative;
}
.nav a:hover {
    color: var(--color-primary);
    background: rgba(15, 43, 75, 0.06);
}
.nav a.active {
    color: var(--color-white);
    background: var(--color-primary);
    box-shadow: 0 4px 12px rgba(15, 43, 75, 0.20);
}
.nav a.active:hover {
    background: var(--color-primary-light);
}

.nav-cta {
    margin-left: 8px;
    padding: 8px 20px !important;
    background: var(--color-accent) !important;
    color: white !important;
    border-radius: 100px;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(45, 139, 203, 0.30);
    transition: all var(--transition);
}
.nav-cta:hover {
    background: var(--color-accent-light) !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(45, 139, 203, 0.35);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-primary);
    cursor: pointer;
    padding: 4px;
    border-radius: 8px;
    transition: background var(--transition);
}
.mobile-toggle:hover {
    background: rgba(15, 43, 75, 0.06);
}

/* ============================================
   PAGE SECTIONS
   ============================================ */
.page-section {
    padding: 72px 0;
    border-bottom: 1px solid var(--color-border);
}
.page-section:last-of-type {
    border-bottom: none;
}
.page-section.alt-bg {
    background: var(--color-white);
}

.section-header {
    margin-bottom: 48px;
}
.section-header.centered {
    text-align: center;
}
.section-header.centered .section-subtitle {
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font);
}
.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 16px rgba(15, 43, 75, 0.20);
}
.btn-primary:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(15, 43, 75, 0.25);
}
.btn-accent {
    background: var(--color-accent);
    color: white;
    box-shadow: 0 4px 16px rgba(45, 139, 203, 0.25);
}
.btn-accent:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(45, 139, 203, 0.30);
}
.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1.5px solid var(--color-border);
}
.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(15, 43, 75, 0.04);
    transform: translateY(-2px);
}
.btn-gold {
    background: var(--color-gold);
    color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(212, 168, 67, 0.30);
    font-weight: 700;
}
.btn-gold:hover {
    background: var(--color-gold-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(212, 168, 67, 0.40);
}
.btn-sm {
    padding: 6px 16px;
    font-size: 0.85rem;
}

/* ============================================
   HERO (Accueil)
   ============================================ */
.hero {
    padding: 60px 0 48px;
    background: linear-gradient(165deg, #f0f6fc 0%, #ffffff 100%);
    border-bottom: 1px solid var(--color-border);
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}
.hero-content .badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(45, 139, 203, 0.10);
    border: 1px solid rgba(45, 139, 203, 0.15);
    padding: 6px 18px 6px 14px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: 20px;
}
.hero-content .badge i {
    font-size: 0.7rem;
}
.hero-title {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.03em;
    color: var(--color-primary);
}
.hero-title .highlight {
    color: var(--color-accent);
}
.hero-title .gold {
    color: var(--color-gold);
}
.hero-desc {
    font-size: 1.15rem;
    color: var(--color-text-light);
    margin-top: 20px;
    max-width: 520px;
    line-height: 1.7;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 32px;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}
.hero-illustration {
    width: 100%;
    max-width: 480px;
    aspect-ratio: 1 / 0.9;
    background: linear-gradient(145deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}
.hero-illustration::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -20%;
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}
.hero-illustration .big-icon {
    font-size: 4.5rem;
    margin-bottom: 16px;
    opacity: 0.9;
}
.hero-illustration h3 {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-align: center;
}
.hero-illustration p {
    font-size: 0.95rem;
    opacity: 0.85;
    text-align: center;
    max-width: 300px;
    margin-top: 8px;
}
.hero-stats {
    display: flex;
    gap: 32px;
    margin-top: 28px;
}
.hero-stats .stat {
    text-align: center;
}
.hero-stats .stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-gold-light);
}
.hero-stats .stat-label {
    font-size: 0.8rem;
    opacity: 0.7;
    font-weight: 400;
}

/* ============================================
   INSTITUTES GRID
   ============================================ */
.institute-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}
.institute-card {
    background: var(--color-white);
    border-radius: var(--radius-sm);
    padding: 28px 20px;
    border: 1px solid var(--color-border);
    text-align: center;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}
.institute-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}
.institute-card .acronym {
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--color-primary);
    letter-spacing: 0.02em;
}
.institute-card .full-name {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: 4px;
}
.institute-card .pub-count {
    display: inline-block;
    margin-top: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    background: rgba(45, 139, 203, 0.08);
    padding: 4px 14px;
    border-radius: 100px;
}
.institute-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 14px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-accent);
    transition: gap var(--transition);
}
.institute-card .card-link:hover {
    gap: 12px;
}

/* ============================================
   RESOURCE HUBS
   ============================================ */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}
.resource-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 32px 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.resource-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
    opacity: 0;
    transition: opacity var(--transition);
}
.resource-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.resource-card:hover::after {
    opacity: 1;
}
.resource-card .icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    background: rgba(45, 139, 203, 0.10);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--color-accent);
    margin-bottom: 16px;
}
.resource-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
}
.resource-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}
.resource-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-accent);
    transition: gap var(--transition);
}
.resource-card .card-link:hover {
    gap: 14px;
}

/* ============================================
   MISSION CARDS (accueil)
   ============================================ */
.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 8px;
}
.mission-card {
    background: var(--color-white);
    padding: 24px 20px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
}
.mission-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.mission-card .icon {
    font-size: 2rem;
    margin-bottom: 8px;
}
.mission-card .icon.blue {
    color: var(--color-accent);
}
.mission-card .icon.gold {
    color: var(--color-gold);
}
.mission-card h4 {
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-primary);
}
.mission-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* ============================================
   MODEL NOTE
   ============================================ */
.model-note {
    margin-top: 32px;
    padding: 20px 24px;
    background: rgba(45, 139, 203, 0.06);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--color-accent);
    font-size: 0.95rem;
    color: var(--color-text-light);
}
.model-note strong {
    color: var(--color-primary);
}
.model-note a {
    color: var(--color-accent);
    font-weight: 500;
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ============================================
   CTA BANNER
   ============================================ */
.cta-banner {
    background: linear-gradient(145deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-lg);
    padding: 56px 48px;
    color: white;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    box-shadow: var(--shadow-xl);
    margin-top: 16px;
}
.cta-banner .cta-text h2 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.cta-banner .cta-text p {
    opacity: 0.85;
    margin-top: 6px;
    font-size: 1rem;
    max-width: 480px;
}

/* ============================================
   STYLES POUR LA PAGE CHERCHEURS
   ============================================ */

/* Barre de statistiques */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 40px;
    background: var(--color-white);
    padding: 20px 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    margin-bottom: 24px;
    flex-wrap: wrap;
    box-shadow: var(--shadow-sm);
}

.stats-bar .stat {
    text-align: center;
}

.stats-bar .stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: 'Playfair Display', serif;
}

.stats-bar .stat-label {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* Barre de recherche */
.search-box {
    display: flex;
    gap: 12px;
    max-width: 600px;
    margin: 0 auto 24px;
    flex-wrap: wrap;
    justify-content: center;
}

.search-box input {
    flex: 1;
    min-width: 200px;
    padding: 10px 18px;
    border: 1.5px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.95rem;
    background: var(--color-white);
    transition: border var(--transition), box-shadow var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(45, 139, 203, 0.1);
}

.search-box button {
    padding: 10px 24px;
    border-radius: 100px;
    border: none;
    background: var(--color-accent);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
    white-space: nowrap;
}

.search-box button:hover {
    background: var(--color-accent-light);
}

/* Grille des chercheurs */
.researcher-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 20px;
}

.researcher-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 28px 20px 24px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.researcher-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.researcher-card .avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 12px;
    border: 3px solid var(--color-border);
    background: var(--color-bg);
}

.researcher-card .name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
}

.researcher-card .title {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: 2px;
}

.researcher-card .institution {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.researcher-card .institution i {
    margin-right: 4px;
    color: var(--color-accent);
}

.researcher-card .speciality {
    display: inline-block;
    margin-top: 10px;
    padding: 4px 14px;
    background: var(--amber-p);
    color: var(--amber);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.researcher-card .btn-profile {
    margin-top: 14px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.pagination a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    text-decoration: none;
    transition: all var(--transition);
    min-width: 38px;
    font-weight: 500;
    font-size: 0.9rem;
    background: var(--color-white);
}

.pagination a:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.pagination a.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* Message "aucun résultat" */
.no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-light);
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px dashed var(--color-border);
    grid-column: 1 / -1;
}

.no-results i {
    font-size: 3rem;
    display: block;
    margin-bottom: 16px;
    color: var(--color-border);
}

.no-results h3 {
    font-size: 1.3rem;
    color: var(--color-text);
    margin-bottom: 8px;
    font-weight: 600;
}

.no-results p {
    font-size: 0.95rem;
}

/* ============================================
   STYLES POUR LE MENU DÉROULANT "MON ESPACE"
   ============================================ */
.nav-dropdown {
    position: relative;
    display: inline-block;
}

.nav-dropdown .dropdown-trigger {
    padding: 8px 20px !important;
    background: var(--color-gold) !important;
    color: var(--color-primary) !important;
    border-radius: 100px;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(212, 168, 67, 0.30);
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    border: none;
    font-family: var(--font);
    font-size: 0.875rem;
}

.nav-dropdown .dropdown-trigger:hover {
    background: var(--color-gold-light) !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(212, 168, 67, 0.40);
}

.nav-dropdown .dropdown-trigger i.fa-chevron-down {
    font-size: 0.65rem;
    transition: transform 0.3s ease;
}

.nav-dropdown:hover .dropdown-trigger i.fa-chevron-down {
    transform: rotate(180deg);
}

.nav-dropdown .dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    background: var(--color-primary-dark);
    min-width: 220px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    z-index: 1000;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, transform 0.25s ease;
    pointer-events: none;
}

.nav-dropdown:hover .dropdown-content,
.nav-dropdown .dropdown-content.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.nav-dropdown .dropdown-content a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
    text-decoration: none;
    border-left: 3px solid transparent;
}

.nav-dropdown .dropdown-content a:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    border-left-color: var(--color-gold);
}

.nav-dropdown .dropdown-content a i {
    width: 18px;
    text-align: center;
    font-size: 0.95rem;
}

.nav-dropdown .dropdown-content a.danger {
    color: #ef4444;
}

.nav-dropdown .dropdown-content a.danger:hover {
    background: rgba(239, 68, 68, 0.15);
    border-left-color: #ef4444;
}

.nav-dropdown .dropdown-content hr {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin: 6px 12px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 48px 0 32px;
    margin-top: 8px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .logo-icon {
    background: rgba(255, 255, 255, 0.12);
    color: white;
    box-shadow: none;
}
.footer-brand .logo-text {
    color: white;
}
.footer-brand .logo-text span {
    color: var(--color-accent-light);
}
.footer-brand p {
    margin-top: 14px;
    font-size: 0.9rem;
    opacity: 0.75;
    max-width: 320px;
    line-height: 1.7;
}
.footer-col h4 {
    color: white;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 16px;
    opacity: 0.7;
}
.footer-col a {
    display: block;
    padding: 4px 0;
    font-size: 0.9rem;
    opacity: 0.7;
    transition: opacity var(--transition), transform var(--transition);
}
.footer-col a:hover {
    opacity: 1;
    transform: translateX(4px);
}
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    font-size: 0.85rem;
    opacity: 0.6;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-bottom .socials {
    display: flex;
    gap: 16px;
}
.footer-bottom .socials a {
    opacity: 0.6;
    transition: opacity var(--transition), transform var(--transition);
    font-size: 1.1rem;
}
.footer-bottom .socials a:hover {
    opacity: 1;
    transform: translateY(-2px);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 66px;
    }
    .nav {
        display: none;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(16px);
        padding: 16px 24px 24px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
        gap: 4px;
    }
    .nav.open {
        display: flex;
    }
    .nav a {
        padding: 12px 16px;
        width: 100%;
        border-radius: var(--radius-sm);
    }
    .nav a.active {
        background: var(--color-primary);
        color: white;
    }
    .nav-cta {
        margin-left: 0;
        text-align: center;
        justify-content: center;
    }
    .mobile-toggle {
        display: block;
    }

    /* Dropdown mobile */
    .nav-dropdown {
        width: 100%;
    }
    .nav-dropdown .dropdown-trigger {
        width: 100%;
        justify-content: center;
        border-radius: var(--radius-sm);
        padding: 12px 16px !important;
    }
    .nav-dropdown .dropdown-content {
        position: static;
        background: transparent;
        box-shadow: none;
        padding-left: 16px;
        opacity: 1;
        transform: none;
        pointer-events: auto;
        display: none;
        transition: none;
    }
    .nav-dropdown .dropdown-content.show {
        display: block;
    }
    .nav-dropdown .dropdown-content a {
        color: var(--color-text-light);
        padding: 8px 16px;
        border-left-color: transparent;
    }
    .nav-dropdown .dropdown-content a:hover {
        background: rgba(15, 43, 75, 0.06);
        color: var(--color-primary);
        border-left-color: var(--color-gold);
    }
    .nav-dropdown .dropdown-content a.danger {
        color: #dc2626;
    }
    .nav-dropdown .dropdown-content a.danger:hover {
        background: rgba(220, 38, 38, 0.08);
    }
    .nav-dropdown .dropdown-content hr {
        border-color: var(--color-border);
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .hero-visual {
        order: -1;
    }
    .hero-illustration {
        max-width: 100%;
        aspect-ratio: 1 / 0.7;
        padding: 28px;
    }
    .hero-illustration .big-icon {
        font-size: 3.2rem;
    }

    .page-section {
        padding: 48px 0;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .section-subtitle {
        font-size: 1rem;
    }

    .institute-grid {
        grid-template-columns: 1fr 1fr;
    }
    .resource-grid {
        grid-template-columns: 1fr;
    }
    .mission-grid {
        grid-template-columns: 1fr 1fr;
    }
    .researcher-grid {
        grid-template-columns: 1fr 1fr;
    }

    .stats-bar {
        gap: 20px;
        padding: 16px;
    }
    .stats-bar .stat-number {
        font-size: 1.4rem;
    }

    .cta-banner {
        padding: 32px 24px;
        flex-direction: column;
        text-align: center;
    }
    .cta-banner .cta-text p {
        max-width: 100%;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .container {
        padding: 0 16px;
    }
}

@media (max-width: 480px) {
    .institute-grid {
        grid-template-columns: 1fr;
    }
    .mission-grid {
        grid-template-columns: 1fr;
    }
    .researcher-grid {
        grid-template-columns: 1fr;
    }
    .hero-illustration {
        aspect-ratio: 1 / 0.8;
        padding: 20px;
    }
    .hero-illustration .big-icon {
        font-size: 2.6rem;
    }
    .hero-illustration h3 {
        font-size: 1.2rem;
    }
    .hero-stats {
        flex-wrap: wrap;
        justify-content: center;
    }
    .stats-bar {
        gap: 12px;
        padding: 12px;
    }
    .stats-bar .stat-number {
        font-size: 1.2rem;
    }
    .search-box input {
        min-width: 150px;
        padding: 8px 14px;
    }
    .search-box button {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
    .container {
        padding: 0 12px;
    }
}

/* ============================================
   STYLES RESEARCHGATE POUR LA PAGE CHERCHEURS
   ============================================ */

/* --- Barre de recherche --- */
.search-container {
    max-width: 640px;
    margin: 0 auto 24px;
}

.search-box {
    display: flex;
    gap: 12px;
    align-items: center;
}

.search-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    background: var(--color-white);
    border: 1.5px solid var(--color-border);
    border-radius: 100px;
    transition: border 0.2s, box-shadow 0.2s;
}

.search-wrapper:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(45, 139, 203, 0.1);
}

.search-wrapper .search-icon {
    position: absolute;
    left: 14px;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.search-wrapper input {
    flex: 1;
    padding: 10px 16px 10px 40px;
    border: none;
    background: transparent;
    font-size: 0.95rem;
    color: var(--color-text);
    outline: none;
    font-family: var(--font);
}

.search-wrapper .clear-search {
    position: absolute;
    right: 14px;
    color: var(--color-text-muted);
    text-decoration: none;
    padding: 4px 8px;
    border-radius: 50%;
    transition: background 0.2s;
}

.search-wrapper .clear-search:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

.btn-search {
    padding: 10px 28px;
    border-radius: 100px;
    border: none;
    background: var(--color-accent);
    color: white;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
    white-space: nowrap;
    font-family: var(--font);
}

.btn-search:hover {
    background: var(--color-accent-light);
    transform: translateY(-1px);
}

/* --- Statistiques (style ResearchGate) --- */
.stats-bar-researchgate {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    padding: 12px 24px;
    margin-bottom: 28px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    box-shadow: var(--shadow-sm);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 4px 20px;
}

.stat-item .stat-number {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: 'Inter', sans-serif;
    line-height: 1.2;
}

.stat-item .stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.stat-divider {
    width: 1px;
    height: 32px;
    background: var(--color-border);
}

/* --- Grille des chercheurs (style ResearchGate) --- */
.researcher-grid-rg {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 8px;
}

/* --- Carte chercheur (style ResearchGate) --- */
.researcher-card-rg {
    background: var(--color-white);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    padding: 20px 22px 18px;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
}

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

/* En-tête de la carte (avatar + infos) */
.card-header {
    display: flex;
    align-items: center;
    gap: 14px;
}

.avatar-rg {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-border);
    background: var(--color-bg);
    flex-shrink: 0;
}

.card-info {
    flex: 1;
    min-width: 0;
}

.name-rg {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.3;
}

.title-rg {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.3;
}

.institution-rg {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    line-height: 1.3;
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.institution-rg i {
    margin-right: 4px;
    color: var(--color-accent);
    font-size: 0.7rem;
}

/* Spécialité (tag) */
.speciality-rg {
    display: inline-block;
    margin-top: 10px;
    padding: 3px 12px;
    background: var(--amber-p);
    color: var(--amber);
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    align-self: flex-start;
    letter-spacing: 0.02em;
}

/* Statistiques de la carte */
.card-stats {
    display: flex;
    gap: 16px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.card-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.card-stats i {
    font-size: 0.75rem;
    color: var(--color-accent);
}

/* Bouton "Voir le profil" */
.btn-profile-rg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 12px;
    padding: 8px 16px;
    border-radius: 100px;
    border: 1.5px solid var(--color-border);
    background: transparent;
    color: var(--color-text);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    font-family: var(--font);
    width: 100%;
}

.btn-profile-rg:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(45, 139, 203, 0.04);
}

.btn-profile-rg i {
    font-size: 0.8rem;
}

/* --- Pagination (style ResearchGate) --- */
.pagination-rg {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4px;
    margin-top: 32px;
}

.pagination-rg a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    color: var(--color-text);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    background: transparent;
}

.pagination-rg a:hover {
    background: var(--color-bg);
    border-color: var(--color-border);
}

.pagination-rg a.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.pagination-rg a.prev,
.pagination-rg a.next {
    font-size: 0.8rem;
    padding: 0 12px;
}

.pagination-rg a.prev:hover,
.pagination-rg a.next:hover {
    background: var(--color-bg);
    border-color: var(--color-border);
}

/* --- Message "aucun résultat" --- */
.no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-light);
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px dashed var(--color-border);
}

.no-results i {
    font-size: 2.8rem;
    display: block;
    margin-bottom: 12px;
    color: var(--color-border);
}

.no-results h3 {
    font-size: 1.2rem;
    color: var(--color-text);
    margin-bottom: 4px;
    font-weight: 600;
}

/* ============================================
   RESPONSIVE (adaptation mobile)
   ============================================ */
@media (max-width: 768px) {
    .search-box {
        flex-direction: column;
        gap: 10px;
    }
    .btn-search {
        width: 100%;
        justify-content: center;
    }
    .stats-bar-researchgate {
        flex-wrap: wrap;
        padding: 12px 16px;
        gap: 8px;
    }
    .stat-item {
        padding: 4px 12px;
        flex: 1 0 40%;
    }
    .stat-divider {
        display: none;
    }
    .stat-item .stat-number {
        font-size: 1.2rem;
    }
    .researcher-grid-rg {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }
    .researcher-card-rg {
        padding: 16px;
    }
    .avatar-rg {
        width: 40px;
        height: 40px;
    }
    .name-rg {
        font-size: 0.9rem;
    }
    .title-rg {
        font-size: 0.8rem;
    }
    .institution-rg {
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    .researcher-grid-rg {
        grid-template-columns: 1fr;
    }
    .card-header {
        gap: 12px;
    }
    .stat-item {
        flex: 1 0 30%;
    }
    .stats-bar-researchgate {
        gap: 0;
    }
    .pagination-rg a {
        min-width: 32px;
        height: 32px;
        font-size: 0.8rem;
    }
}