/**
 * Tutorial Modal — design aligné sur la page d'accueil
 * Fond #0a0e14, accents blancs/gris, capitales espacées, bordures fines.
 * Images du jeu (téléporteurs, lanceur, drapeau final).
 */

/* ============================================
   OVERLAY
   ============================================ */

.tutorial-overlay {
    position: fixed;
    inset: 0;
    background: rgba(5, 7, 11, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 10001;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
    cursor: pointer;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.tutorial-overlay.visible {
    opacity: 1;
}

/* ============================================
   MODAL
   ============================================ */

.tutorial-modal {
    background: #0a0e14;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 0;
    max-width: 640px;
    width: 90%;
    max-height: 85vh;
    overflow: hidden;
    cursor: default;
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.04),
        0 25px 80px rgba(0, 0, 0, 0.7);
    animation: tutorialSlideIn 0.4s ease-out;
}

@keyframes tutorialSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ============================================
   HEADER
   ============================================ */

.tutorial-header {
    padding: 32px 32px 24px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.tutorial-lang-toggle {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 24px;
}

.tutorial-lang-btn {
    padding: 6px 16px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tutorial-lang-btn:hover {
    border-color: rgba(255, 255, 255, 0.4);
    color: rgba(255, 255, 255, 0.8);
}

.tutorial-lang-btn.active {
    background: #ffffff;
    border-color: #ffffff;
    color: #0a0e14;
}

.tutorial-logo {
    height: 56px;
    width: auto;
    margin-bottom: 16px;
    filter: drop-shadow(0 4px 12px rgba(96, 165, 250, 0.5));
    animation: tutorialLogoFloat 3s ease-in-out infinite;
}

@keyframes tutorialLogoFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-6px); }
}

.tutorial-title {
    font-size: 1.6rem;
    font-weight: 300;
    letter-spacing: 0.18rem;
    text-transform: uppercase;
    color: #ffffff;
    margin: 0 0 10px 0;
}

.tutorial-subtitle {
    font-size: 0.82rem;
    letter-spacing: 0.08rem;
    color: rgba(255, 255, 255, 0.4);
    margin: 0;
    font-weight: 300;
}

/* ============================================
   BODY
   ============================================ */

.tutorial-body {
    padding: 24px 32px 32px;
    overflow-y: auto;
    max-height: calc(85vh - 220px);
}

/* ============================================
   CONTROLS GRID
   ============================================ */

.tutorial-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.tutorial-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 20px;
}

.tutorial-card.highlight {
    border-color: rgba(255, 255, 255, 0.35);
    background: rgba(255, 255, 255, 0.06);
}

.tutorial-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.tutorial-card-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #ffffff;
}

.tutorial-card-icon svg {
    width: 18px;
    height: 18px;
}

.tutorial-card-title {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.1rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.85);
    margin: 0;
}

.tutorial-card-content {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.5;
}

.tutorial-card-note {
    margin: 10px 0 0;
    color: rgba(255, 255, 255, 0.35);
    font-size: 12px;
}

.tutorial-kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 22px;
    padding: 0 6px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    font-family: var(--font-mono, 'SF Mono', 'Consolas', monospace);
    font-size: 11px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85);
    margin: 0 2px;
}

.tutorial-kbd-group {
    display: flex;
    gap: 4px;
    margin-top: 8px;
}

.tutorial-key-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
}

.tutorial-key-label {
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
}

/* ----- Swap : cubes numérotés (recréés en CSS, comme le rendu canvas) ----- */

.tutorial-swap-grid {
    display: flex;
    gap: 12px;
    margin-top: 4px;
}

.tutorial-cube {
    width: 34px;
    height: 34px;
    border-radius: 12%;
    background: linear-gradient(135deg,
        var(--cube-light) 0%,
        var(--cube-base) 40%,
        var(--cube-dark) 100%);
    border: 1.5px solid rgba(0, 0, 0, 0.25);
    box-shadow:
        inset 0 6px 8px -6px rgba(255, 255, 255, 0.55),
        0 2px 6px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

/* ============================================
   OBJECTIVE SECTION — drapeau final
   ============================================ */

.tutorial-objective {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 16px 20px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.tutorial-objective-img {
    width: 44px;
    height: 44px;
    object-fit: contain;
    flex-shrink: 0;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.5));
}

.tutorial-objective-text {
    flex: 1;
}

.tutorial-objective-title {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.1rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.85);
    margin: 0 0 4px 0;
}

.tutorial-objective-desc {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
    margin: 0;
}

/* ============================================
   FOOTER
   ============================================ */

.tutorial-footer {
    text-align: center;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.tutorial-hint {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.35);
    margin: 0 0 16px 0;
}

.tutorial-start-hint {
    font-size: 0.78rem;
    letter-spacing: 0.08rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
    animation: tutorialPulse 2s ease-in-out infinite;
}

@keyframes tutorialPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 600px) {
    .tutorial-modal {
        max-width: 100%;
        max-height: 100%;
        border-radius: 0;
    }

    .tutorial-grid {
        grid-template-columns: 1fr;
    }

    .tutorial-header {
        padding: 24px 20px 20px;
    }

    .tutorial-body {
        padding: 20px;
    }

    .tutorial-title {
        font-size: 1.4rem;
    }
}