/* --- VARIABLES GLOBALES (Pour la cohérence des couleurs) --- */
:root {
    --bg-dark: #1a1a2e; /* Fond principal plus profond */
    --bg-light: #2c2c44; /* Fond des conteneurs/cartes plus texturé */
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0b0;
    --accent-blue: #00bcd4; /* Un bleu-cyan plus "swag" */
    --accent-hover: #00e5ff;
    --border-color: #3f3f60;
    --input-bg: #3a3a5e;
    --shadow-color: rgba(0, 0, 0, 0.6);
    --button-gradient: linear-gradient(135deg, #00bcd4 0%, #00a6e0 100%);
    --button-gradient-hover: linear-gradient(135deg, #00e5ff 0%, #00bfff 100%);
    
    /* COULEURS MANQUANTES POUR LES TAGS ET BOUTON COPIE */
    --accent-main-red: #ff7f50; /* Corail/Rouge pour le tag V1 */
    --accent-copy: #50ff7f; /* Vert clair pour le bouton Copier */
    --accent-copy-hover: #7fff9e;
}

/* --- GÉNÉRAL --- */
body {
    font-family: 'Poppins', sans-serif; 
    margin: 0;
    padding: 0;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden; 
    
    /* FOND COOL */
    background: radial-gradient(circle at top right, #3f3f6040 0%, transparent 40%),
                radial-gradient(circle at bottom left, #00bcd420 0%, transparent 50%),
                var(--bg-dark);
}

/* --- HEADER / APP CONTAINER / SECTION TITLES --- */
.app-header {
    margin-top: 40px;
    margin-bottom: 30px;
    display: flex;
    justify-content: center;
    width: 100%;
}

.app-container {
    width: 100%;
    max-width: 1000px; 
    padding: 0 20px; 
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section-title {
    color: var(--accent-blue);
    font-size: 1.8em;
    font-weight: 700;
    border-bottom: 2px solid var(--accent-blue);
    padding-bottom: 8px;
    margin-top: 40px;
    margin-bottom: 25px;
    width: 100%;
    text-align: center;
    letter-spacing: 0.5px;
}

.separator {
    border: 0;
    height: 1px;
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0), var(--border-color), rgba(0, 0, 0, 0));
    margin: 40px 0;
    width: 80%;
}

/* --- CONTROLS / FORMULAIRE --- */
.controls {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 30px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 8px 20px var(--shadow-color);
    width: 100%;
    max-width: 800px; 
    box-sizing: border-box;
}

.control-group {
    display: flex;
    flex-direction: column;
}

.control-label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.95em;
}

select, input[type="number"], input[type="text"] {
    padding: 12px 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-size: 1em;
    transition: border-color 0.3s, box-shadow 0.3s;
    outline: none;
}

select:focus, input[type="number"]:focus, input[type="text"]:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.3);
}

/* --- TOGGLES (Mode et Étapes) --- */
.mode-toggle {
    display: flex;
    gap: 10px;
    background-color: var(--input-bg);
    border-radius: 8px;
    padding: 5px;
    border: 1px solid var(--border-color);
}
.mode-toggle input[type="radio"] {
    display: none;
}
.mode-toggle .toggle-btn {
    flex-grow: 1; 
    text-align: center;
    padding: 10px 18px;
    border-radius: 6px;
    cursor: pointer;
    background-color: transparent;
    font-weight: 500;
    transition: background-color 0.3s, color 0.3s, box-shadow 0.3s;
}
.mode-toggle input[type="radio"]:checked + .toggle-btn {
    background: var(--accent-blue);
    color: white;
    box-shadow: 0 2px 8px rgba(0, 188, 212, 0.4);
}
.mode-toggle .toggle-btn:not(:checked):hover {
    background-color: var(--border-color);
}

/* Styles pour le groupe de sélection des étapes */
.steps-selector-group .steps-toggle {
    display: flex;
    gap: 10px;
    background-color: var(--input-bg);
    border-radius: 12px; 
    padding: 8px; 
    border: 1px solid var(--border-color);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5); 
}
.steps-selector-group .toggle-btn {
    padding: 12px 10px; 
    border-radius: 9px; 
    font-weight: 600; 
    border: 2px solid transparent; 
}
.steps-selector-group input[type="radio"]:checked + .toggle-btn {
    box-shadow: 0 0 15px rgba(0, 188, 212, 0.6); 
    border-color: var(--accent-hover); 
    transform: scale(1.02); 
}
.steps-selector-group .toggle-btn:not(:checked):hover {
    background-color: rgba(255, 255, 255, 0.05); 
    color: var(--text-primary);
    border-color: var(--accent-blue);
}
.steps-selector-group input[type="number"] {
    max-width: 200px;
    text-align: center;
    padding: 12px 15px; 
    border-radius: 9px;
    font-weight: 600;
}


.btn-generate {
    background: var(--button-gradient);
    color: white;
    font-weight: 700;
    cursor: pointer;
    padding: 14px 25px;
    border: none;
    border-radius: 8px;
    font-size: 1.15em;
    transition: all 0.3s ease;
    margin-top: 15px;
    box-shadow: 0 5px 15px rgba(0, 188, 212, 0.3);
}

.btn-generate:hover {
    background: var(--button-gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 188, 212, 0.5);
}

/* --- BARRE DE CONTRÔLE HEX (Visuel) --- */
.main-gradient-container {
    width: 100%;
    margin: 10px 0 20px 0;
}

.gradient-bar-display {
    height: 70px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    box-shadow: 0 4px 15px var(--shadow-color);
    position: relative;
    border: 1px solid var(--border-color);
    overflow: hidden; 
}

.hex-text-display {
    color: white;
    font-weight: 700;
    font-size: 1.5em;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.9);
    z-index: 10;
    user-select: none;
}
.hex-selector input[type="color"] {
    position: absolute;
    opacity: 0;
    width: 40px; 
    height: 40px;
    cursor: pointer;
}
.hex-selector input[type="text"] {
    background: rgba(0, 0, 0, 0.4); 
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 8px 10px; 
    width: 85px; 
    text-align: center;
    border-radius: 6px; 
    font-size: 0.95em;
    color: white;
    text-shadow: none;
    transition: background-color 0.3s;
}
.hex-selector input[type="text"]:hover {
    background: rgba(0, 0, 0, 0.6);
}
.hex-selector::before {
    content: '🎨'; 
    font-size: 1.8em;
    color: var(--text-primary);
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);
    padding: 5px;
    cursor: pointer;
    transition: transform 0.2s;
}
.hex-selector::before:hover {
    transform: scale(1.1);
}

/* --- SÉLECTION DE BLOCS (Contrôles visuels) --- */
.block-visual-selector {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--input-bg);
    border: 2px solid var(--border-color); /* Bordure plus visible */
    border-radius: 10px;
    padding: 8px; /* Réduit le padding pour plus de compacité */
    transition: box-shadow 0.3s, border-color 0.3s;
    height: 60px; 
}

.block-visual-selector:hover {
    box-shadow: 0 0 10px 3px rgba(0, 188, 212, 0.4); /* Lueur plus marquée au survol */
    border-color: var(--accent-blue);
    cursor: pointer;
}

.selected-block-preview {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    background-color: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.5);
}

/* Bouton à l'intérieur de la sélection de bloc (CHOISIR UN BLOC) */
.btn-select-block {
    background: var(--button-gradient); 
    color: white;
    padding: 8px 15px;
    border: none;
    border-radius: 6px;
    font-size: 0.9em;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 3px 6px rgba(0, 188, 212, 0.3);
}

.btn-select-block:hover {
    background: var(--button-gradient-hover);
    transform: translateY(-1px);
    box-shadow: 0 5px 10px rgba(0, 188, 212, 0.5);
}

/* --- RÉSULTAT DU DÉGRADÉ (Blocs Carrés Continus) --- */
.output-container {
    display: flex;
    flex-wrap: wrap; 
    justify-content: center; 
    gap: 0; 
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background-color: var(--bg-light);
    max-width: 100%; 
    width: 100%;
    padding: 5px; 
    box-sizing: border-box;
    box-shadow: 0 8px 20px var(--shadow-color);
    position: relative;
}

.block-result {
    width: 80px;  
    height: 80px; 
    flex-shrink: 0; 
    padding: 0;
    margin: 0;
    border: none; 
    border-right: 1px solid rgba(255, 255, 255, 0.1); 
    border-bottom: 1px solid rgba(255, 255, 255, 0.1); 
    
    image-rendering: pixelated; 
    image-rendering: crisp-edges;
    
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    cursor: help; 
    position: relative; 
}

.pixel-texture {
    image-rendering: pixelated; 
    image-rendering: crisp-edges;
    width: 100%;
    height: 100%;
    object-fit: cover; 
}

/* CORRECTION : Assurer que le nom du bloc est masqué */
.block-name {
    display: none !important; 
}
.block-result:last-child {
    border-right: none;
}

/* --- BOUTON COPIER LA SÉQUENCE --- */
.btn-copy-sequence {
    background: var(--accent-copy); 
    color: var(--bg-dark);
    font-weight: 700;
    cursor: pointer;
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    transition: all 0.3s ease;
    margin-top: 20px; 
    box-shadow: 0 5px 15px rgba(80, 255, 127, 0.3);
    width: 100%; 
    max-width: 300px;
}
.btn-copy-sequence:hover {
    background: var(--accent-copy-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(80, 255, 127, 0.5);
}

/* --- BANDEAU LÉGAL & TAG V1 --- */
.legal-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--border-color); 
    color: var(--text-secondary);
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.5);
    z-index: 9999;
    font-size: 0.85em;
}
.legal-banner button {
    background-color: var(--accent-main-red);
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 6px;
    cursor: pointer;
    margin-left: 20px;
    transition: background-color 0.2s;
}
.v1-tag {
    background-color: var(--accent-main-red);
    color: var(--bg-dark);
    padding: 3px 6px;
    border-radius: 4px;
    font-size: 0.7em;
    font-weight: bold;
    margin-left: 5px;
    vertical-align: top;
    line-height: 1;
    text-shadow: none;
}

/* --- STYLE DU TOOLTIP PERSONNALISÉ --- */
.custom-tooltip { 
    position: absolute;
    background-color: var(--bg-light);
    color: var(--text-primary);
    border: 1px solid var(--accent-blue);
    border-radius: 8px;
    padding: 12px 18px;
    box-shadow: 0 6px 15px var(--shadow-color);
    z-index: 1000; 
    pointer-events: none; 
    min-width: 220px;
    opacity: 0.98;
    text-align: left;
    transition: opacity 0.2s, transform 0.2s;
}
.custom-tooltip p {
    margin: 4px 0;
    line-height: 1.4;
    font-size: 0.95em;
}
.custom-tooltip strong {
    color: var(--accent-blue);
    font-weight: 700;
    display: inline-block;
    min-width: 90px;
}


/* --- MODALE DE SÉLECTION DE BLOCS --- */
.modal {
    position: fixed;
    z-index: 10000; 
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9); 
    backdrop-filter: blur(8px); 
    padding-top: 50px;
}

.modal-content {
    background-color: var(--bg-light);
    margin: 5% auto; 
    padding: 25px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 95%;
    max-width: 1000px;
    box-shadow: 0 5px 15px var(--shadow-color);
    position: relative;
}

.close-button {
    color: var(--text-secondary);
    float: right;
    font-size: 30px;
    font-weight: bold;
    transition: color 0.3s;
}

.close-button:hover,
.close-button:focus {
    color: var(--accent-hover);
    text-decoration: none;
    cursor: pointer;
}

.modal-title {
    color: var(--accent-blue);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
    margin-top: 0;
    margin-bottom: 20px;
}

.block-grid-container {
    max-height: 70vh; 
    overflow-y: auto;
    padding-right: 10px;
}

.category-title {
    color: var(--accent-secondary);
    font-size: 1.2em;
    margin-top: 25px;
    margin-bottom: 10px;
}

/* 🛑 CORRECTION : Styles de la GRILLE qui cassait l'alignement */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); 
    gap: 15px; 
    padding-bottom: 20px;
}

.grid-block-item {
    width: 80px;
    height: 80px;
    border: 3px solid var(--border-color); 
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    background-color: var(--input-bg);
}

.grid-block-item:hover {
    border-color: var(--accent-blue);
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0, 188, 212, 0.4);
}
/* Fin des styles pour la modale */


/* --- MEDIA QUERIES (Réactivité) --- */

@media (max-width: 768px) {
    .app-header svg {
        width: 220px;
        height: 60px;
    }
    .controls {
        padding: 20px;
        gap: 15px;
    }
    .block-result {
        width: 60px;
        height: 60px;
    }
    .btn-select-block {
        font-size: 0.8em;
        padding: 6px 10px;
    }
    .grid-block-item {
        width: 60px;
        height: 60px;
    }
    .category-grid {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .app-header svg {
        width: 180px;
        height: 50px;
    }
    .controls {
        padding: 15px;
    }
    .block-result {
        width: 50px;
        height: 50px;
    }
    .btn-select-block {
        font-size: 0.7em;
        padding: 5px 8px;
    }
    .grid-block-item {
        width: 50px;
        height: 50px;
    }
    .category-grid {
        grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
        gap: 8px;
    }
    .custom-tooltip {
        min-width: unset; 
        width: 90%; 
        left: 5% !important; 
        transform: translateX(0) !important; 
    }
}