/* CSS Variables — Blanc Lumineux & Douceur */
:root {
    --color-bg: #FFFFFF; /* Blanc pur éclatant */
    --color-bg-warm: #FAFAF8; /* Blanc chaud — sections alternées */
    --color-bg-subtle: #F5F3EF; /* Lin clair — hero / sections clés */
    --color-dark: #2D3748; /* Gris-bleu adouci */
    
    /* Palette Sunset — Analogue (teintes adjacentes 14°–42°) */
    --color-primary-light: #FBE8D0;   /* Miel pâle      — HSL(30, 88%, 90%)  */
    --color-primary: #F5D490;         /* Miel            — HSL(42, 86%, 76%)  */
    
    /* Accent contrastant : Corail brûlé & Pêche */
    --color-accent: #E8885A;          /* Corail brûlé    — HSL(14, 77%, 63%)  */
    --color-accent-light: #FDDACB;    /* Pêche pâle      — HSL(20, 93%, 89%)  */
    
    --color-white: #ffffff;
    
    /* Bordures fines & douces */
    --border-thick: 1px solid #E8E4DF;
    --border-thin: 1px solid #E8E4DF;
    
    /* Ombres nuage diffuses */
    --shadow-hard: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-hard-hover: 0 4px 20px rgba(0, 0, 0, 0.10);
    --shadow-navbar: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-btn: 0 1px 4px rgba(0, 0, 0, 0.08);
    --shadow-btn-hover: 0 2px 8px rgba(0, 0, 0, 0.12);
    
    --font-heading: 'Fraunces', Georgia, serif;
    --font-body: 'Inter', sans-serif;
    
    --color-muted: #718096;
    
    --radius: 14px;
    --radius-btn: 10px;
    --transition: all 0.3s ease;
}

/* ========================================================
   PROPOSITIONS DE PALETTES PASTELS SOBRES
   ======================================================== */

/* Variante 1 : Sunset Doux — tons miellés atténués */
[data-theme="grege"] {
    --color-bg: #FFFFFF;
    --color-bg-warm: #FDFAF6;
    --color-bg-subtle: #F8F3EC;
    --color-dark: #3D3229;
    --color-primary-light: #F5E6CC;
    --color-primary: #E8C880;
    --color-accent: #D4784A;
    --color-accent-light: #F8D5C0;
    --color-muted: #8A7968;
    --color-white: #ffffff;
    --border-thick: 1px solid #EAE0D2;
    --shadow-hard: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-hard-hover: 0 4px 20px rgba(0, 0, 0, 0.10);
}

/* Variante 2 : Sunset Rosé — plus de pêche, touche florale */
[data-theme="lichen"] {
    --color-bg: #FFFFFF;
    --color-bg-warm: #FDF9F7;
    --color-bg-subtle: #F9F0EB;
    --color-dark: #3A2E2A;
    --color-primary-light: #FDE4D8;
    --color-primary: #F5B89A;
    --color-accent: #D96848;
    --color-accent-light: #FDEBE2;
    --color-muted: #907870;
    --color-white: #ffffff;
    --border-thick: 1px solid #EDDDD5;
    --shadow-hard: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-hard-hover: 0 4px 20px rgba(0, 0, 0, 0.10);
}

/* Variante 3 : Sunset Braise — plus intense, terre cuite profonde */
[data-theme="ardoise"] {
    --color-bg: #FFFFFF;
    --color-bg-warm: #FBF8F5;
    --color-bg-subtle: #F5EDE6;
    --color-dark: #352520;
    --color-primary-light: #F5DCC8;
    --color-primary: #E0B078;
    --color-accent: #C85A38;
    --color-accent-light: #F5CDBA;
    --color-muted: #887060;
    --color-white: #ffffff;
    --border-thick: 1px solid #E8D8C8;
    --shadow-hard: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-hard-hover: 0 4px 20px rgba(0, 0, 0, 0.10);
}

/* Palette Switcher Widget */
.palette-switcher-bar {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-white);
    border: var(--border-thick);
    box-shadow: 0 8px 30px rgba(0,0,0,0.10);
    border-radius: 50px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1000;
    max-width: 95vw;
    overflow-x: auto;
    backdrop-filter: blur(8px);
}

.palette-switcher-title {
    font-size: 0.85rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    color: var(--color-dark);
    padding-right: 6px;
    border-right: 1px solid rgba(0,0,0,0.15);
}

.palette-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border: 1.5px solid transparent;
    border-radius: 30px;
    background: transparent;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-dark);
    transition: all 0.2s ease;
    white-space: nowrap;
}

.palette-btn:hover {
    background: var(--color-primary-light);
}

.palette-btn.active {
    background: var(--color-dark);
    color: var(--color-white);
    border-color: var(--color-dark);
}

.palette-dots {
    display: inline-flex;
    gap: 3px;
}

.palette-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,0.25);
    display: inline-block;
}

.palette-compare-link {
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 10px;
    border-radius: 20px;
    background: var(--color-primary-light);
    color: var(--color-dark);
    text-decoration: none;
    white-space: nowrap;
    border: 1px solid #E8E4DF;
    transition: transform 0.15s;
}

.palette-compare-link:hover {
    transform: translateY(-1px);
}

/* Transitions douces lors du changement de palette */
body, header, section, footer, .card, .btn, .pillar-card, .pillar-number, .role-tag, .hero::after {
    transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    color: var(--color-dark);
    background-color: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 700;
}

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

ul {
    list-style: none;
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 6rem 0;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Background Colors Semantic */
.bg-primary-light { background-color: var(--color-primary-light); }
.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-bg-warm); }
.bg-accent { background-color: var(--color-accent); }
.bg-accent-light { background-color: var(--color-accent-light); }
.bg-dark { background-color: var(--color-dark); }
.text-white { color: var(--color-white); }
.text-center { text-align: center; }

/* Buttons */
.btn {
    display: inline-block;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    padding: 0.8rem 1.5rem;
    border: var(--border-thick);
    border-radius: var(--radius-btn);
    box-shadow: var(--shadow-btn);
    transition: var(--transition);
    cursor: pointer;
    text-align: center;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-btn-hover);
}

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

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

.btn-large {
    font-size: 1.1rem;
    padding: 1rem 2rem;
}

.btn-massive {
    font-size: 1.25rem;
    padding: 1.2rem 2.5rem;
    margin: 0.5rem;
}

/* Navbar */
.navbar {
    padding: 1.5rem 0;
    border-bottom: var(--border-thick);
    background-color: var(--color-white);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-dark);
    letter-spacing: -0.5px;
}

.nav-links {
    display: none;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    font-size: 1.05rem;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.nav-links a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-cta {
    display: none;
}

.mobile-menu-toggle {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-dark);
}

@media (min-width: 992px) {
    .nav-links { display: flex; }
    .nav-cta { display: inline-block; }
    .mobile-menu-toggle { display: none; }
}

/* Mobile Menu Active State */
.nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    border-bottom: var(--border-thick);
    padding: 2rem;
    gap: 1.5rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

/* Hero Section */
.hero {
    padding: 6rem 0 8rem;
    border-bottom: var(--border-thick);
    position: relative;
    overflow: hidden;
    background: 
        linear-gradient(
            135deg,
            rgba(255, 255, 255, 0.92) 0%,
            rgba(253, 218, 203, 0.85) 50%,
            rgba(251, 232, 208, 0.88) 100%
        ),
        url('../assets/facilitation_collective.jpg') center / cover no-repeat;
}

/* Subtle grain overlay for depth */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse at 70% 50%,
        transparent 40%,
        rgba(255, 255, 255, 0.4) 100%
    );
    pointer-events: none;
    z-index: 0;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-image-wrapper {
    position: relative;
    z-index: 1;
}

.hero-image-card {
    background: var(--color-white);
    border: var(--border-thick);
    border-radius: var(--radius);
    box-shadow: var(--shadow-hard);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hero-image-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hard-hover);
}

.hero-image-card img {
    display: block;
    width: 100%;
    height: 340px;
    object-fit: cover;
}

.hero-image-caption {
    padding: 0.85rem 1.2rem;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--color-muted);
    border-top: var(--border-thick);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-white);
}

.hero-image-caption span {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.hero-title {
    font-size: clamp(3rem, 7vw, 4.5rem);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-title span {
    color: var(--color-dark);
}

.hero-subtitle {
    font-size: 1.4rem;
    font-weight: 500;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    max-width: 700px;
    color: var(--color-dark);
    opacity: 0.75;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

/* Section Common */
.section-title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    margin-bottom: 3rem;
    text-align: center;
}

.section-lead {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
    color: var(--color-muted);
}

/* Cards */
.card {
    border: var(--border-thick);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow-hard);
    height: 100%;
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hard-hover);
}

.card-accent { background-color: var(--color-accent); }
.card-primary { background-color: var(--color-primary); }
.card-light { background-color: var(--color-white); color: var(--color-dark); }

.card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid rgba(0,0,0,0.1);
    padding-bottom: 1rem;
}



.card-header h3 {
    margin: 0;
    font-size: 1.4rem;
}

.feature-list li {
    margin-bottom: 1rem;
    position: relative;
    padding-left: 1.5rem;
}

.feature-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    top: 2px;
    font-weight: 600;
}

/* Pillars (Approche) */
.pillar-card {
    background-color: var(--color-white);
    border: var(--border-thick);
    border-radius: var(--radius);
    padding: 2rem;
    position: relative;
    box-shadow: var(--shadow-hard);
}

.pillar-number {
    position: absolute;
    top: -20px;
    left: -20px;
    width: 45px;
    height: 45px;
    background-color: var(--color-primary);
    border: var(--border-thick);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.pillar-card h4 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    margin-top: 1rem;
}

/* Timeline / Expériences */
.timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--color-white);
}

.timeline-item {
    position: relative;
    padding-left: 50px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 13px;
    top: 30px;
    width: 16px;
    height: 16px;
    background-color: var(--color-accent);
    border: 2px solid #E8E4DF;
    border-radius: 50%;
    z-index: 2;
}

.role-tag {
    display: inline-block;
    background-color: var(--color-primary-light);
    padding: 0.2rem 0.8rem;
    border: 1px solid #E8E4DF;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

/* Contact */
.contact-text {
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

/* Footer */
.footer {
    background-color: var(--color-white);
    border-top: var(--border-thick);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    gap: 1.5rem;
}

.footer-brand p {
    color: var(--color-muted);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    font-weight: 500;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 4px;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid #eee;
    padding-top: 1rem;
    font-size: 0.9rem;
    color: #a0aec0;
}