/* ==========================================
   PERMU-KUB - STYLESHEET v2.1.0
   ========================================== */

:root {
    --bg-primary: #0a0c10;
    --surface-color: #121620;
    --surface-hover: #1a2030;
    --border-color: #222b3c;
    --border-block: #00f3ff;
    --text-main: #f0f4f8;
    --text-muted: #8899ac;
    --text-accent: #00f3ff;
    --danger-color: #ff3366;
    --success-color: #00ff66;
    --transition-fast: 0.2s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.binokub-container {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    width: 100%;
    max-width: 540px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    text-align: center;
}

/* En-tête */
.binokub-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.binokub-title {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-main);
}

.binokub-title span {
    color: var(--text-accent);
}

/* Boutons et Contrôles */
.selector-btn, .menu-btn {
    background-color: var(--bg-primary);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    transition: var(--transition-fast);
}

.selector-btn:hover, .menu-btn:hover {
    background-color: var(--surface-hover);
    border-color: var(--text-accent);
    color: var(--text-accent);
}

.menu-btn {
    width: 100%;
    padding: 0.85rem;
    margin-top: 0.5rem;
    font-size: 0.95rem;
}

/* Menu de configuration */
.menu-screen {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 0.5rem 0;
    text-align: left;
}

.menu-group {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 0.85rem;
    border-radius: 6px;
}

.menu-group label {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.options-row {
    display: flex;
    gap: 0.5rem;
}

.opt-btn {
    flex: 1;
    background-color: var(--surface-color);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition-fast);
}

.opt-btn.active {
    background-color: rgba(0, 243, 255, 0.15);
    border-color: var(--text-accent);
    color: var(--text-accent);
}

/* Panneau de statut */
.binokub-status-panel {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.75rem;
    margin-bottom: 1.25rem;
}

.status-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    display: block;
    margin-bottom: 0.2rem;
}

.status-value {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-accent);
}

/* Grilles dynamiques */
.binokub-grid-wrapper {
    display: flex;
    justify-content: center;
}

.binokub-grid {
    display: grid;
    gap: 3px;
    background-color: var(--border-color);
    padding: 3px;
    border-radius: 6px;
}

.grid-6x6 {
    grid-template-columns: repeat(6, 1fr);
}

.grid-9x9 {
    grid-template-columns: repeat(9, 1fr);
}

/* Tuiles de jeu */
.binoku-tile {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 2px;
    transition: var(--transition-fast);
    user-select: none;
}

/* Dimensions adaptatives selon la taille de grille */
.grid-6x6 .binoku-tile {
    width: 46px;
    height: 46px;
    font-size: 1.15rem;
}

.grid-9x9 .binoku-tile {
    width: 34px;
    height: 34px;
    font-size: 0.9rem;
}

.binoku-tile:hover {
    background-color: var(--surface-hover);
    border-color: var(--text-accent);
}

.binoku-tile.selected {
    border-color: var(--text-accent);
    background-color: rgba(0, 243, 255, 0.15);
    box-shadow: 0 0 8px rgba(0, 243, 255, 0.3);
}

/* Séparations nettes des sous-blocs 3x3 */
/* Pour 6x6 : bordure renforcée après la colonne 3 et la ligne 3 */
.grid-6x6 .binoku-tile:nth-child(6n + 3) {
    border-right: 2px solid var(--border-block);
}
.grid-6x6 .binoku-tile:nth-child(n+13):nth-child(-n+18),
.grid-6x6 .binoku-tile:nth-child(n+1):nth-child(-n+6):nth-last-child(n+31) {
    /* Ligne 3 renforcée en bas */
}
/* Approche universelle par classes de blocs injectées en JS pour une propreté absolue */
.border-right-block {
    border-right: 2px solid var(--border-block) !important;
}
.border-bottom-block {
    border-bottom: 2px solid var(--border-block) !important;
}

/* Tuiles fixes (Mode 2 - Tactique) : Blanches et ancrées */
.binoku-tile.tile-frozen {
    background-color: var(--surface-hover);
    color: #ffffff;
    border-color: var(--text-accent);
    font-weight: 700;
    cursor: not-allowed;
    box-shadow: inset 0 0 6px rgba(0, 243, 255, 0.2);
}