/* --- VARIABLES GLOBALES (Thème Bleu/Cyan) --- */
:root {
    --bg-dark: #1a1a2e;
    --bg-light: #2c2c44;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0b0;
    --accent-blue: #00bcd4;
    --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%);
    --accent-main-red: #ff7f50;
    --accent-copy: #50ff7f;
    --accent-copy-hover: #7fff9e;
}

/* --- SPLASH SCREEN STYLES --- */
.splash-screen {
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    background-color: var(--bg-dark); 
    z-index: 99999;
    display: flex; 
    justify-content: center; 
    align-items: center;
    flex-direction: column; 
    color: var(--text-primary);
    transition: opacity 0.5s ease-in-out;
}
.loader-content p { 
    font-size: 1.2em; 
    margin-top: 20px; 
    color: var(--accent-blue); 
}
.spinner { 
    width: 60px; 
    height: 60px; 
    border: 5px solid var(--border-color); 
    border-top-color: var(--accent-blue); 
    border-radius: 50%; 
    animation: spin 1s linear infinite; 
}
@keyframes spin { 
    to { transform: rotate(360deg); } 
}

/* --- 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; 
}
.legal-banner button:hover {
    background-color: #ff6347;
}
.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; 
}

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

/* --- MESSAGES --- */
.message-info,
.loading-message,
.error-message {
    text-align: center;
    padding: 20px;
    font-size: 1.1em;
    width: 100%;
}
.loading-message {
    color: var(--accent-blue);
}
.error-message {
    color: var(--accent-main-red);
}

/* --- 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"],
input[type="color"] { 
    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, 0.2);
}
.mode-toggle, 
.steps-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"],
.steps-toggle input[type="radio"] { 
    display: none; 
}
.mode-toggle .toggle-btn,
.steps-toggle .toggle-btn { 
    flex: 1;
    text-align: center; 
    padding: 10px 18px; 
    border-radius: 6px; 
    cursor: pointer; 
    background-color: transparent; 
    font-weight: 500; 
    transition: all 0.3s ease; 
    border: 2px solid transparent;
}
.mode-toggle input[type="radio"]:checked + .toggle-btn,
.steps-toggle input[type="radio"]:checked + .toggle-btn { 
    background: var(--accent-blue); 
    color: white; 
    box-shadow: 0 2px 8px rgba(0, 188, 212, 0.4); 
    transform: scale(1.02);
}

/* 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; 
}
.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); 
}

/* Barre de dégradé hex */
.main-gradient-container {
    width: 100%;
}
.gradient-bar-display {
    position: relative;
    width: 100%;
    height: 80px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}
.hex-selector {
    display: flex;
    gap: 10px;
    align-items: center;
}
.hex-selector input[type="color"] {
    width: 50px;
    height: 50px;
    border: 3px solid white;
    border-radius: 8px;
    cursor: pointer;
    padding: 0;
}
.hex-selector input[type="text"] {
    width: 100px;
    text-align: center;
    text-transform: uppercase;
    font-weight: 600;
}
.hex-text-display {
    color: white;
    font-weight: 700;
    font-size: 1.2em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

/* Bouton génération */
.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); 
    width: 100%; 
}
.btn-generate:hover {
    background: var(--button-gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 7px 20px rgba(0, 188, 212, 0.5);
}

/* --- SÉLECTION DE BLOCS (Contrôles visuels) --- */
#blockSelection {
    display: flex !important;
    gap: 20px !important;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
}
.block-select-group {
    flex: 1;
    min-width: 280px;
    max-width: 380px;
}
.block-visual-selector { 
    display: flex; 
    align-items: center; 
    justify-content: space-between; 
    background-color: var(--input-bg); 
    border: 2px solid var(--border-color); 
    border-radius: 10px; 
    padding: 8px; 
    transition: box-shadow 0.3s, border-color 0.3s; 
    height: 60px; 
    cursor: pointer;
}
.block-visual-selector:hover { 
    box-shadow: 0 0 10px 3px rgba(0, 188, 212, 0.4); 
    border-color: var(--accent-blue); 
}
.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); 
    flex-shrink: 0;
}
.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); 
    cursor: pointer;
}
.btn-select-block:hover {
    background: var(--button-gradient-hover);
    transform: translateY(-1px);
}

/* --- RENDU DE L'IMAGE DANS LE SPRITE SHEET --- */
.block-sprite-preview { 
    background-repeat: no-repeat;
    image-rendering: auto;
    display: block;
}
.pixel-texture { 
    image-rendering: pixelated; 
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges; 
}
.smooth-texture { 
    image-rendering: auto; 
}

/* --- RÉSULTAT DU DÉGRADÉ --- */
.output-container { 
    display: flex; 
    flex-wrap: wrap; 
    justify-content: flex-start; 
    gap: 0; 
    border: 2px solid var(--border-color); 
    border-radius: 12px; 
    background-color: var(--bg-light); 
    max-width: 100%; 
    width: 100%; 
    padding: 0; 
    box-sizing: border-box; 
    box-shadow: 0 8px 20px var(--shadow-color); 
    position: relative; 
    overflow: hidden;
}
.block-result { 
    width: 80px; 
    height: 80px; 
    flex-shrink: 0; 
    padding: 0; 
    margin: 0; 
    border: none;
    cursor: help; 
    position: relative; 
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, z-index 0s;
}
.block-result:hover {
    transform: scale(1.1);
    z-index: 10;
    box-shadow: 0 0 15px rgba(0, 188, 212, 0.6);
}
.block-name { 
    display: none !important; 
}

/* Bouton copier */
.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: 20px auto; 
    box-shadow: 0 5px 15px rgba(80, 255, 127, 0.3); 
    width: calc(100% - 40px); 
    max-width: 300px;
    display: block;
}
.btn-copy-sequence:hover {
    background: var(--accent-copy-hover);
    transform: translateY(-2px);
    box-shadow: 0 7px 20px rgba(80, 255, 127, 0.5);
}

/* --- TOOLTIP CUSTOM --- */
.custom-tooltip {
    position: absolute;
    background-color: var(--bg-light);
    border: 2px solid var(--accent-blue);
    border-radius: 8px;
    padding: 12px 15px;
    z-index: 10000;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.7);
    pointer-events: none;
    font-size: 0.9em;
    min-width: 200px;
}
.custom-tooltip p {
    margin: 5px 0;
    color: var(--text-primary);
}
.custom-tooltip strong {
    color: var(--accent-blue);
}

/* --- 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;
    max-height: 80vh;
    overflow-y: auto;
}
.modal-title {
    color: var(--accent-blue);
    font-size: 1.6em;
    margin-bottom: 20px;
    text-align: center;
}
.close-button {
    position: absolute;
    top: 15px;
    right: 25px;
    color: var(--text-secondary);
    font-size: 35px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
}
.close-button:hover {
    color: var(--accent-main-red);
}
.block-grid-container {
    width: 100%;
}
.category-title {
    color: var(--accent-blue);
    font-size: 1.2em;
    margin: 20px 0 10px 0;
    padding-bottom: 5px;
    border-bottom: 1px solid var(--border-color);
}
.category-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(64px, 1fr)); 
    gap: 12px; 
    padding-bottom: 20px; 
    justify-items: center;
}
.grid-block-item { 
    width: 64px; 
    height: 64px; 
    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); 
    display: flex; 
    justify-content: center; 
    align-items: center; 
}
.grid-block-item:hover {
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(0, 188, 212, 0.6);
    border-color: var(--accent-blue);
    z-index: 10;
}
.grid-item-preview {
    /* Les styles sont gérés inline dans le HTML */
}

/* --- MEDIA QUERIES --- */
@media (max-width: 768px) { 
    .block-result { 
        width: 64px; 
        height: 64px; 
    } 
    .grid-block-item { 
        width: 56px; 
        height: 56px; 
    }
    .category-grid { 
        grid-template-columns: repeat(auto-fill, minmax(56px, 1fr)); 
        gap: 10px; 
    }
    #blockSelection { 
        gap: 15px !important; 
    }
    .block-select-group {
        min-width: 100%;
    }
    .app-header svg {
        width: 280px;
        height: 56px;
    }
}

@media (max-width: 480px) { 
    .block-result { 
        width: 50px; 
        height: 50px; 
    } 
    .grid-block-item { 
        width: 48px; 
        height: 48px; 
    }
    .category-grid { 
        grid-template-columns: repeat(auto-fill, minmax(48px, 1fr)); 
        gap: 8px; 
    }
    .controls {
        padding: 20px;
    }
    .section-title {
        font-size: 1.4em;
    }
}