/* ==========================================================================
   VARIABLES DE CONFIGURATION & PALETTE VERT, NOIR & BLANC
   ========================================================================== */
:root {
    --primary: #00ff88;          /* Vert néon/vif ultra-attirant */
    --primary-dark: #00cc6a;     /* Vert foncé pour le survol */
    --primary-light: rgba(0, 255, 136, 0.15); /* Vert transparent pour les badges */
    
    --bg-dark: #0a0a0a;          /* Noir profond principal */
    --bg-card: #141414;          /* Noir adouci pour les cartes */
    --bg-card-hover: #1f1f1f;    /* Noir légèrement plus clair au survol */
    
    --text-main: #ffffff;        /* Blanc pur pour les titres */
    --text-muted: #a3a3a3;       /* Gris clair/blanc cassé pour les descriptions */
    
    --border-color: #262626;     /* Bordure subtile foncée */
    --radius: 16px;              /* Arrondi général */
    --shadow: 0 15px 30px rgba(0, 255, 136, 0.08); /* Lueur verte subtile */
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-muted);
    line-height: 1.6;
    overflow-x: hidden;
}

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

section {
    padding: 90px 0;
    background-color: var(--bg-dark);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
}

.badge-tag {
    display: inline-block;
    background-color: var(--primary-light);
    color: var(--primary);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 16px;
    border: 1px solid rgba(0, 255, 136, 0.3);
}

h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

p.section-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary);
    color: var(--bg-dark);
    box-shadow: 0 4px 20px rgba(0, 255, 136, 0.4);
    font-weight: 700;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 255, 136, 0.6);
}

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

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

.hero {
    position: relative;
    padding: 130px 0 100px 0;
    background: radial-gradient(circle at top right, rgba(0, 255, 136, 0.08), transparent 50%), var(--bg-dark);
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 50px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
    color: var(--text-main);
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.hero-content h1 span {
    color: var(--primary);
    text-shadow: 0 0 30px rgba(0, 255, 136, 0.3);
}

.hero-content p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 36px;
}

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

.hero-visual {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    position: relative;
}

.transformation-preview {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.scene-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: #1a1a1a;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.scene-icon {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.scene-icon.hot { background-color: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.scene-icon.green { background-color: var(--primary-light); color: var(--primary); }

.scene-info h4 { font-size: 1rem; font-weight: 700; color: var(--text-main); }
.scene-info p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }

.arrow-indicator {
    text-align: center;
    color: var(--primary);
    font-size: 1.2rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {transform: translateY(0);}
    40% {transform: translateY(6px);}
    60% {transform: translateY(3px);}
}

.problem, .solution, .how-it-works, .usecases, .impact, .innovation-section {
    background-color: var(--bg-dark);
}

.cards-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    background: var(--bg-card-hover);
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.card-icon.warm { background-color: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.card-icon.nature { background-color: var(--primary-light); color: var(--primary); }
.card-icon.water { background-color: rgba(2, 132, 199, 0.15); color: #38bdf8; }

.card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-main);
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.solution-highlight {
    background: var(--primary-light);
    border-left: 5px solid var(--primary);
    padding: 24px 30px;
    border-radius: 0 12px 12px 0;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    margin: 30px 0 50px 0;
    text-align: center;
    border: 1px solid rgba(0, 255, 136, 0.2);
}

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

.step-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 30px 20px;
    position: relative;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
}

.step-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
}

.step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--bg-dark);
    font-weight: 800;
    font-size: 0.85rem;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0, 255, 136, 0.3);
}

.step-card i {
    font-size: 2rem;
    color: var(--primary);
    margin: 15px 0;
}

.step-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-main);
}

.step-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.dashboard-section {
    background: #050505;
    color: white;
    padding: 100px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.dashboard-mockup {
    background: #0f0f0f;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
    margin-top: 40px;
}

.dashboard-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
    margin-bottom: 25px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.metric-card {
    background: #171717;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
}

.metric-title {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.metric-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: white;
}

.metric-value.green { color: var(--primary); text-shadow: 0 0 15px rgba(0, 255, 136, 0.3); }
.metric-value.blue { color: #38bdf8; }
.metric-value.warm { color: #f59e0b; }

.disclaimer-note {
    text-align: center;
    font-size: 0.75rem;
    color: #525252;
    margin-top: 25px;
    font-style: italic;
}

.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.impact-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.impact-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 20px 24px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 16px;
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-main);
}

.impact-item i {
    color: var(--primary);
    font-size: 1.25rem;
    background: var(--primary-light);
    padding: 10px;
    border-radius: 8px;
}

.youth-project {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.05), #141414);
    border: 1px solid rgba(0, 255, 136, 0.2);
    text-align: center;
    border-radius: var(--radius);
    padding: 60px 40px;
    margin: 60px auto 0 auto;
    max-width: 900px;
}

.youth-quote {
    font-size: 1.3rem;
    font-style: italic;
    font-weight: 700;
    color: var(--primary);
    margin-top: 20px;
}

.cta-section {
    background: #050505;
    text-align: center;
    padding: 100px 0;
    border-top: 1px solid var(--border-color);
}

.pedagogical-footer {
    text-align: center;
    font-size: 0.8rem;
    color: #525252;
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-dark);
}

@media (max-width: 992px) {
    .hero-grid, .cards-grid-3, .steps-grid, .grid-4, .dashboard-grid, .impact-list {
        grid-template-columns: 1fr;
    }
    .hero-content h1 {
        font-size: 2.3rem;
    }
}