/* ==========================================================================
   WATTSAVE - DESIGN SYSTEM (Thème: DARK GLASS)
   Fichier commun pour toutes les pages du site.
   ========================================================================== */

:root {
    /* Couleurs de la Marque (Logo) - Utilisées pour les fonds et boutons */
    --logo-blue: #2A3B95; 
    --logo-green: #3DAE49; 
    
    /* Couleurs d'accentuation (Pour la lisibilité des textes sur fond sombre) */
    --accent-blue: #38BDF8; /* Bleu ciel doux pour les titres */
    --accent-green: #4ADE80; /* Vert lumineux pour les pourcentages/gains */
    --danger-color: #F43F5E; /* Rouge doux pour les baisses */
    
    /* Thème Sombre & Effet Vitre (Glassmorphism) */
    --dark-bg: #0B1121; /* Fond principal nuit très profond */
    --card-glass: rgba(30, 41, 59, 0.4); /* Vitre sombre translucide */
    --card-solid: rgba(15, 23, 42, 0.9); /* Ardoise très foncée */
    --glass-border: 1px solid rgba(255, 255, 255, 0.08); /* Reflet léger */
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3); /* Ombre diffuse */
    
    /* Typographie */
    --text-main: #F8FAFC; /* Blanc cassé doux */
    --text-muted: #94A3B8; /* Gris bleuté clair */
    
    --font-main: 'Montserrat', sans-serif;
    --font-ui: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* =========================================
   1. RESET & BASE (Commun)
   ========================================= */
* { margin: 0; padding: 0; box-sizing: border-box; }

body { 
    font-family: var(--font-main); 
    background-color: var(--dark-bg); 
    color: var(--text-main); 
    /* Dégradé de fond subtil avec les couleurs du logo */
    background: radial-gradient(circle at top right, rgba(42, 59, 149, 0.15), transparent 50%),
                radial-gradient(circle at bottom left, rgba(61, 174, 73, 0.05), transparent 50%),
                linear-gradient(135deg, var(--dark-bg) 0%, #020617 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
h1, h2, h3 { color: var(--accent-blue); text-transform: uppercase; letter-spacing: 1px; }

/* =========================================
   2. HEADER & NAVIGATION (Commun)
   ========================================= */
header {
    /* Fond blanc translucide (effet verre clair) */
    background: rgba(255, 255, 255, 0.92); 
    backdrop-filter: blur(12px); 
    -webkit-backdrop-filter: blur(12px);
    
    /* Ligne bleue et ombre pour bien détacher le bandeau clair du fond sombre */
    border-bottom: 2px solid var(--logo-blue); 
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5); 
    
    position: fixed; width: 100%; top: 0; z-index: 1000;
}

.navbar { 
    display: flex; justify-content: space-between; align-items: center; 
    padding: 0.5rem 5%; max-width: 1600px; margin: 0 auto; 
}

/* Le logo ressortira naturellement sur le blanc, on enlève l'ombre blanche inutile */
.logo-container img { 
    height: 50px; 
    width: auto; 
    filter: none; 
}

.nav-links { 
    display: flex; gap: 2.5rem; align-items: center; 
    list-style: none; padding: 0; margin: 0; 
}

/* Les écrits de navigation bien mis en valeur */
.nav-links a { 
    font-weight: 800; /* Texte bien gras */
    font-size: 0.95rem; 
    text-transform: uppercase; 
    color: var(--logo-blue); /* Utilise le bleu du logo pour contraster avec le fond blanc */
    letter-spacing: 0.5px;
    transition: 0.3s ease;
}

/* Effet au survol des liens (Vert du logo) */
.nav-links a:hover { 
    color: var(--logo-green); 
    transform: translateY(-1px);
}

/* Le bouton "Retour" / "Accès Client" bien en évidence */
.btn-back { 
    background: var(--logo-blue); 
    color: white !important; 
    border: 2px solid var(--logo-blue);
    padding: 0.6rem 1.5rem; 
    border-radius: 6px; 
    font-weight: 800;
    box-shadow: 0 4px 10px rgba(42, 59, 149, 0.3);
    transition: 0.3s ease;
}

/* Effet au survol du bouton "Retour" */
.btn-back:hover { 
    background: var(--logo-green); 
    border-color: var(--logo-green);
    color: white !important; 
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(61, 174, 73, 0.4);
}

/* Bouton Contact Spécial Accueil */
.btn-contact {
    background: linear-gradient(90deg, var(--logo-green), var(--logo-blue));
    padding: 0.6rem 1.5rem !important; border-radius: 4px; color: white !important;
    clip-path: polygon(10% 0, 100% 0, 90% 100%, 0% 100%);
    border: none;
}
.btn-contact:hover { transform: scale(1.05); }
/* =========================================
   3. BOUTONS & ELEMENTS GLOBAUX (Commun)
   ========================================= */
button, .action-button, .edit-button, .modal-button { 
    background: linear-gradient(135deg, #3A4EBA, var(--logo-blue)); color: white; border: none; padding: 8px 15px; border-radius: 4px; 
    cursor: pointer; font-family: var(--font-main); font-weight: 600; text-transform: uppercase; font-size: 0.8em;
    transition: 0.3s; box-shadow: 0 4px 10px rgba(0,0,0,0.2); border: 1px solid rgba(255,255,255,0.1);
}
button:hover, .action-button:hover, .modal-button:hover { background: var(--accent-blue); color: #000; transform: translateY(-2px); box-shadow: 0 6px 15px rgba(56, 189, 248, 0.3); }

.modal-button.secondary { background: rgba(255,255,255,0.1); color: var(--text-main); border-color: rgba(255,255,255,0.2); }
.modal-button.secondary:hover { background: rgba(255,255,255,0.2); color: white; }
.modal-button.tertiary { background: transparent; border: 1px solid var(--text-muted); color: var(--text-muted); }
.modal-button.tertiary:hover { border-color: white; color: white; background: transparent; }

.bilan-tarifs .action-button { display: block; width: 100%; margin-bottom: 8px; text-align: center; background: transparent; border: 1px solid var(--accent-blue); color: var(--accent-blue); box-shadow: none; }
.bilan-tarifs .action-button:hover { background: var(--accent-blue); color: #000; }

/* Le bouton Optimiser (Vert) */
#edit-distribution-btn { background: linear-gradient(135deg, #4DE862, var(--logo-green)); color: #000; text-shadow: none; border:none; }
#edit-distribution-btn:hover { background: #4DE862; box-shadow: 0 4px 15px rgba(61, 174, 73, 0.4); }

.container { max-width: 1400px; margin: 100px auto 40px; padding: 20px; }
.section { 
    background: var(--card-glass); backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);
    border: var(--glass-border); border-radius: 15px; padding: 25px; margin-bottom: 30px; box-shadow: var(--glass-shadow);
}
.section-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid rgba(255, 255, 255, 0.1); margin-bottom: 20px; padding-bottom: 10px; }

/* =========================================
   4. STYLES SPECIFIQUES : ACCUEIL (index.html)
   ========================================= */
.hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    padding: 120px 5% 80px; position: relative; clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%); overflow: hidden;
}
.hero-container { display: flex; width: 100%; max-width: 1400px; gap: 4rem; align-items: center; z-index: 2; }
.hero-text { flex: 1; min-width: 300px; }
.hero-text h1 { font-size: 3.5rem; margin-bottom: 1.5rem; line-height: 1.1; color: white; }
.text-highlight { color: var(--accent-blue); text-shadow: 0 0 15px rgba(56, 189, 248, 0.4); }
.hero-text p { font-size: 1.2rem; margin-bottom: 2.5rem; color: var(--text-muted); max-width: 500px; }

.hero-dashboard {
    flex: 1.2;
    background: var(--card-glass); backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);
    border: var(--glass-border); border-radius: 15px;
    box-shadow: var(--glass-shadow);
    width: 100%; min-width: 0; display: flex; flex-direction: column; overflow: hidden;
}
.tabs-nav { display: flex; background: rgba(0,0,0,0.3); border-bottom: var(--glass-border); z-index: 20; position: relative; }
.tab-btn { flex: 1; padding: 15px; background: transparent; border: none; color: var(--text-muted); font-weight: 700; text-transform: uppercase; cursor: pointer; border-bottom: 3px solid transparent; transition: 0.3s; }
.tab-btn.active { color: var(--accent-blue); background: rgba(255,255,255,0.05); border-bottom-color: var(--accent-blue); }
.tabs-container { position: relative; width: 100%; min-height: 500px; }
.tab-content { position: absolute; top: 0; left: 0; width: 100%; padding: 20px; opacity: 0; pointer-events: none; transition: opacity 0.3s; z-index: 1; background: transparent; }
.tab-content.active { opacity: 1; pointer-events: auto; z-index: 10; position: relative; }
.dashboard-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; }
.dashboard-header h2 { color: var(--text-main); font-size: 1.2rem; }
.status-indicator { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--accent-green); margin-right: 8px; box-shadow: 0 0 8px var(--accent-green); animation: pulse 2s infinite; }
@keyframes pulse { 0% { opacity: 1; } 50% { opacity: 0.5; } 100% { opacity: 1; } }

.chart-wrapper { width: 100%; margin-bottom: 10px; display: block; }
.chart-line { height: 200px !important; min-height: 200px; }
.chart-gantt { height: 220px !important; min-height: 220px; }

.solutions { padding: 6rem 10%; }
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; max-width: 1400px; margin: 0 auto; }
.product-card { background: var(--card-solid); border: var(--glass-border); border-radius: 12px; overflow: hidden; transition: 0.4s; position: relative; box-shadow: var(--glass-shadow); }
.product-card:hover { transform: translateY(-10px); border-color: var(--accent-blue); box-shadow: 0 10px 30px rgba(56, 189, 248, 0.15); }
.card-image-comic { height: 200px; width: 100%; position: relative; }
.img-flex { background: linear-gradient(45deg, var(--logo-blue), #1e2a6b); }
.img-drive { background: linear-gradient(45deg, var(--logo-green), #2a7a33); }
.img-cles { background: linear-gradient(45deg, var(--accent-blue), var(--logo-blue)); }
.card-content { padding: 2rem; }
.product-card h3 { color: var(--accent-blue); margin-bottom: 1rem; font-size: 1.5rem; }
.product-card p { color: var(--text-muted); margin-bottom: 1.5rem; }
.btn-card { display: inline-block; padding: 0.8rem 1.5rem; border: 1px solid var(--accent-blue); color: var(--accent-blue); font-weight: 800; text-transform: uppercase; transition: 0.3s; border-radius: 4px;}
.btn-card:hover { background: var(--accent-blue); color: #000; }

footer { background: #080C16; padding: 3rem 10%; text-align: center; border-top: 1px solid rgba(255,255,255,0.05); font-size: 0.9rem; color: var(--text-muted); }

/* =========================================
   5. STYLES SPECIFIQUES : OPTIMCLES
   ========================================= */
#upload-container { background-color: rgba(255, 255, 255, 0.03); border: 2px dashed var(--accent-blue); padding: 20px; border-radius: 15px; text-align: center; margin-bottom: 30px; cursor: pointer; transition: 0.3s; display: none; }
#upload-container:hover { background-color: rgba(56, 189, 248, 0.05); box-shadow: 0 0 20px rgba(56, 189, 248, 0.1); }
#upload-container p { color: var(--accent-blue); font-weight: bold; }
#upload-container svg { fill: var(--accent-blue); width: 40px; height: 40px; margin-bottom: 10px; }

.bilan-stats .card { background-color: rgba(0,0,0,0.2); border: 1px solid rgba(255, 255, 255, 0.05); color: var(--text-main); border-radius: 8px; padding: 15px; text-align: center; margin-bottom: 10px; }
.bilan-stats .card.success { border-left: 3px solid var(--accent-green); }
.bilan-stats .card.warning { border-left: 3px solid var(--danger-color); }
.bilan-stats .card .value { font-size: 1.5em; font-weight: 700; display: block; color: var(--text-main); }
.bilan-stats .card .label { font-size: 0.7em; text-transform: uppercase; color: var(--text-muted); }

table { width: 100%; border-collapse: collapse; font-size: 0.85em; color: var(--text-main); }
.economy-table { min-width: 600px; }
#modal-table { min-width: 400px; }
th { text-align: center; padding: 10px; color: var(--accent-blue); border-bottom: 1px solid rgba(255, 255, 255, 0.1); font-weight: 700; text-transform: uppercase; }
td { padding: 8px; border-bottom: 1px solid rgba(255, 255, 255, 0.05); text-align: center; }
tr:nth-child(even) { background-color: rgba(255, 255, 255, 0.02); }
.table-consumer-icon, .consumer-icon-img { width: 16px; margin-right: 5px; vertical-align: middle; filter: invert(1); opacity: 0.7; } 
.consumer-icon-img { width: 30px; }

.consumer-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.consumer-card { background: var(--card-solid); border: var(--glass-border); border-radius: 8px; padding: 15px; box-shadow: var(--glass-shadow); }
.consumer-header { display: flex; gap: 10px; align-items: center; margin-bottom: 10px; }
.consumer-name { font-weight: bold; color: var(--accent-blue); }
.synthesis-table th { font-size: 0.7em; color: var(--text-muted); border-bottom-color: rgba(255,255,255,0.05); }
.synthesis-table td { font-size: 0.8em; color: #ccc; }

.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(2, 6, 23, 0.8); z-index: 2000; backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px); }
.modal-content { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); background: rgba(15, 23, 42, 0.95); border: var(--glass-border); border-radius: 10px; padding: 25px; box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5); max-height: 90vh; overflow-y: auto; color: var(--text-main); width: 95%; }
.modal-content.large-modal { max-width: 1000px; }
.modal-content.medium-modal { max-width: 700px; }
.modal-header { border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 15px; display: flex; justify-content: space-between; align-items: center; gap: 15px; padding-bottom: 10px;}
.modal-title { font-weight: bold; color: var(--accent-blue); }
.modal-close { cursor: pointer; font-size: 1.5em; line-height: 1; padding: 0 5px; color: var(--text-muted); }
.modal-close:hover { color: var(--danger-color); }
input, select { background: rgba(0,0,0,0.5); border: 1px solid rgba(255,255,255,0.2); color: var(--text-main); padding: 5px; border-radius: 4px; max-width: 100%; }
input:focus, select:focus { outline: none; border-color: var(--accent-blue); }
.hidden { display: none !important; }

.economy-increase { color: var(--accent-green); font-weight: bold; }
.economy-decrease { color: var(--danger-color); font-weight: bold; }
.value-increase { color: var(--danger-color); font-weight: bold; }
.value-decrease { color: var(--accent-green); font-weight: bold; }

.bilan-content { display: grid; grid-template-columns: 280px 1fr; gap: 30px; align-items: start; }
.bilan-controls { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 100px; }
.bilan-results { background: rgba(0,0,0,0.15); border: var(--glass-border); padding: 20px; border-radius: 15px; display: flex; flex-direction: column; gap: 25px; overflow-x: auto; box-shadow: inset 0 0 20px rgba(0,0,0,0.2); }

.tree-container { display: flex; flex-direction: column; align-items: center; width: 100%; margin-bottom: 10px; }
.tree-node-top { position: relative; z-index: 2; margin-bottom: 20px; width: 100%; display: flex; justify-content: center; }
.tree-connector-vertical { width: 2px; height: 25px; background: rgba(255,255,255,0.2); margin: -5px auto 0; }
.tree-connector-horizontal { width: 50%; height: 20px; border-top: 2px solid rgba(255,255,255,0.2); border-left: 2px solid rgba(255,255,255,0.2); border-right: 2px solid rgba(255,255,255,0.2); border-top-left-radius: 10px; border-top-right-radius: 10px; margin-bottom: 5px; }
.tree-branches { display: flex; justify-content: center; gap: 40px; width: 100%; }
.tree-node { display: flex; flex-direction: column; align-items: center; position: relative; }
.tree-card { background: rgba(15, 23, 42, 0.8); border: 1px solid rgba(255,255,255,0.1); padding: 10px 20px; border-radius: 8px; text-align: center; min-width: 140px; box-shadow: 0 4px 10px rgba(0,0,0,0.2); }
.tree-card.main { border-color: var(--accent-blue); border-width: 1px; box-shadow: 0 0 15px rgba(56, 189, 248, 0.15); }
.tree-card .label { font-size: 0.75em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 5px; display:block;}
.tree-card .value { font-size: 1.2em; font-weight: bold; color: white; }

.slider-container { display: flex; align-items: center; gap: 10px; width: 100%; min-width: 200px; }
.slider-bound-label { font-size: 0.8em; color: var(--text-muted); min-width: 40px; text-align: center; font-weight: bold; }
.adjustment-slider { flex-grow: 1; cursor: pointer; accent-color: var(--accent-blue); width: 100%; }
.slider-value { font-weight: bold; color: var(--accent-blue); margin-top: 5px; }

/* =========================================
   6. MEDIA QUERIES (RESPONSIVE)
   ========================================= */
@media (max-width: 1100px) {
    .bilan-content { grid-template-columns: 1fr; }
    .bilan-controls { position: static; flex-direction: row; flex-wrap: wrap; justify-content: center; }
    .bilan-tarifs, .bilan-stats { width: auto; flex: 1; min-width: 250px; }
    .hero-container { flex-direction: column; text-align: center; gap: 2rem; }
    .hero-text { margin-bottom: 1rem; width: 100%; }
    .hero-dashboard { width: 100%; max-width: 100%; min-height: 550px; }
    .hero { padding-top: 140px; clip-path: polygon(0 0, 100% 0, 100% 96%, 0 100%); }
}

@media (max-width: 768px) {
    header { position: static; } 
    .navbar { flex-direction: column; gap: 15px; padding: 15px; text-align: center; }
    .nav-links { flex-direction: column; gap: 10px; width: 100%; justify-content: center; }
    .container { margin-top: 20px; padding: 10px; }
    h1 { font-size: 1.5rem !important; }
    h2 { font-size: 1.2rem; }
    .section-header { flex-direction: column; align-items: stretch; gap: 15px; text-align: center; }
    .section-header button { width: 100%; }
    .header-top-infos { flex-direction: column; align-items: flex-start !important; gap: 10px; }
    .tree-branches { flex-direction: column; align-items: center; gap: 15px; }
    .tree-connector-horizontal { width: 2px; height: 15px; border: none; background: rgba(255,255,255,0.2); border-radius: 0; }
    .tree-node .tree-connector-vertical { display: none; }
    .consumer-grid { grid-template-columns: 1fr; }
    .modal-content { padding: 15px; width: 95%; max-height: 85vh; }
    .modal-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 20px !important; }
    .modal-actions button { width: 100%; text-align: center; margin: 0 !important; }
    .date-inputs-container { flex-direction: column; align-items: center; gap: 10px; }
}

@media (max-width: 480px) {
    .slider-container { flex-direction: column; align-items: stretch; min-width: 150px; }
    .slider-bound-label { align-self: center; }
    .tree-card { min-width: 100%; width: 100%; box-sizing: border-box; }
}