/* Ecran d'onboarding (premiere partie).
   Extrait du <style> inline d'index.php (audit 2026-08-30). */
        /* ========== ONBOARDING SCREEN ========== */
        #onboarding-screen {
            background: radial-gradient(ellipse at center, #0a1a0a 0%, #000000 70%);
            font-family: 'Courier New', monospace;
        }
        .onboarding-step {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 1.5rem;
            opacity: 0;
            pointer-events: none;
            transform: translateX(60px);
            transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        .onboarding-step.active {
            opacity: 1;
            pointer-events: auto;
            transform: translateX(0);
        }
        .onboarding-step.exit-left {
            opacity: 0;
            transform: translateX(-60px);
            pointer-events: none;
        }
        .onboarding-step.exit-right {
            opacity: 0;
            transform: translateX(60px);
            pointer-events: none;
        }
        .onboarding-back-btn {
            position: absolute;
            top: 1rem;
            left: 1rem;
            background: none;
            border: 1px solid rgba(0,255,0,0.3);
            color: #00ff00;
            font-family: 'Courier New', monospace;
            font-size: 0.8rem;
            padding: 0.4rem 0.8rem;
            cursor: pointer;
            letter-spacing: 1px;
            transition: all 0.3s ease;
        }
        .onboarding-back-btn:hover {
            border-color: #00ff00;
            background: rgba(0,255,0,0.1);
            text-shadow: 0 0 8px rgba(0,255,0,0.6);
        }

        /* Titre terminal animé */
        .onboarding-title {
            color: #00ff00;
            font-size: 1rem;
            font-weight: bold;
            letter-spacing: 2px;
            text-transform: uppercase;
            text-align: center;
            text-shadow: 0 0 10px rgba(0,255,0,0.6), 0 0 20px rgba(0,255,0,0.3);
            margin-bottom: 0.5rem;
            overflow: hidden;
            white-space: nowrap;
            animation: onboardingTypewriter 1.2s steps(40) forwards;
        }
        /* Seul élément à porter cette animation, et il attendait 0,8 s avant de
           démarrer. Avec un keyframe qui part de opacity 0, un onglet passé en
           arrière-plan pendant ce délai fige l'horloge et laisse le sous-titre
           invisible — même mécanisme que les cases d'inventaire (voir la note
           sur .item-pop-in-animation dans systems/game_styles.css, 2026-08-30).
           On garde le glissement, on retire le fondu : un texte figé à
           translateY(15px) reste lisible. */
        .onboarding-subtitle {
            color: #4ade80;
            font-size: 0.8rem;
            text-align: center;
            animation: onboarding-subtitle-slide 0.6s 0.8s ease both;
        }
        @keyframes onboarding-subtitle-slide {
            0%   { transform: translateY(15px); }
            100% { transform: translateY(0); }
        }

        /* Cartes de sélection (genre, avatar) */
        .onboarding-card {
            background: rgba(0,20,0,0.8);
            border: 2px solid #1a3a1a;
            border-radius: 12px;
            padding: 1.5rem;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            position: relative;
            overflow: hidden;
        }
        .onboarding-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, transparent 40%, rgba(0,255,0,0.05) 100%);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .onboarding-card:hover {
            border-color: #00ff00;
            transform: translateY(-4px) scale(1.02);
            box-shadow: 0 0 20px rgba(0,255,0,0.3), inset 0 0 20px rgba(0,255,0,0.05);
        }
        .onboarding-card:hover::before {
            opacity: 1;
        }
        .onboarding-card.selected {
            border-color: #00ff00;
            box-shadow: 0 0 25px rgba(0,255,0,0.5), inset 0 0 30px rgba(0,255,0,0.1);
            background: rgba(0,40,0,0.9);
        }
        .onboarding-card-icon {
            font-size: 3rem;
            margin-bottom: 0.5rem;
            filter: drop-shadow(0 0 8px rgba(0,255,0,0.4));
        }
        .onboarding-card-label {
            color: #00ff00;
            font-weight: bold;
            font-size: 1rem;
            letter-spacing: 2px;
        }

        /* Grille armes onboarding */
        .onboarding-weapon-grid {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
            max-width: 340px;
            width: 100%;
            margin: 0.5rem auto 0;
            max-height: 55vh;
            overflow-y: auto;
        }
        .onboarding-weapon-card {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.6rem 0.8rem;
            border: 1px solid #1a3a1a;
            border-radius: 8px;
            background: rgba(0,20,0,0.7);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .onboarding-weapon-card:hover {
            border-color: #00ff00;
            box-shadow: 0 0 15px rgba(0,255,0,0.2);
        }
        .onboarding-weapon-card.selected {
            border-color: #00ff00;
            box-shadow: 0 0 20px rgba(0,255,0,0.4), inset 0 0 20px rgba(0,255,0,0.08);
            background: rgba(0,40,0,0.9);
        }
        .onboarding-weapon-img {
            width: 48px;
            height: 48px;
            object-fit: contain;
            filter: drop-shadow(0 0 4px rgba(0,255,0,0.3));
        }
        .onboarding-weapon-info {
            flex: 1;
        }
        .onboarding-weapon-name {
            color: #00ff00;
            font-weight: bold;
            font-size: 0.85rem;
            letter-spacing: 1px;
        }
        .onboarding-weapon-desc {
            color: #4ade80;
            font-size: 0.65rem;
            opacity: 0.8;
            margin-top: 2px;
        }
        .onboarding-weapon-stats {
            color: #22d3ee;
            font-size: 0.6rem;
            margin-top: 2px;
        }

        /* Grille avatars */
        .onboarding-avatar-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0.75rem;
            max-width: 320px;
            width: 100%;
            justify-items: center;
            margin: 0 auto;
        }
        .onboarding-avatar-item {
            width: 90px;
            height: 90px;
            border: 2px solid #1a3a1a;
            border-radius: 10px;
            overflow: hidden;
            cursor: pointer;
            transition: all 0.3s ease;
            background: rgba(0,15,0,0.6);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .onboarding-avatar-item:hover {
            border-color: #4ade80;
            transform: scale(1.08);
        }
        .onboarding-avatar-item.selected {
            border-color: #00ff00;
            box-shadow: 0 0 15px rgba(0,255,0,0.5);
            animation: onboardingGlowPulse 1.5s ease-in-out infinite;
        }
        .onboarding-avatar-item img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        /* === Modale sélection avatar === */
        #avatar-grid > .avatar-info-banner {
            grid-column: 1 / -1;
            text-align: center;
            color: #facc15;
            font-size: 13px;
            padding: 6px 10px;
            background: rgba(250,204,21,0.08);
            border: 1px solid rgba(250,204,21,0.15);
            border-radius: 8px;
            margin-bottom: 4px;
        }
        .avatar-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            cursor: pointer;
            border-radius: 10px;
            padding: 6px;
            transition: background .2s, transform .15s;
        }
        .avatar-card:active { transform: scale(0.96); }
        .avatar-card:hover { background: rgba(255,255,255,0.04); }
        .avatar-card-img {
            width: 88px;
            height: 88px;
            border-radius: 10px;
            overflow: hidden;
            position: relative;
            border: 2px solid transparent;
            box-sizing: border-box;
            flex-shrink: 0;
        }
        .avatar-card-img img {
            width: 100%;
            height: 100%;
            object-fit: contain;
            display: block;
        }
        .avatar-card.selected .avatar-card-img {
            border-color: #4ade80;
        }
        .avatar-card-rarity {
            position: absolute;
            bottom: 0; left: 0; right: 0;
            text-align: center;
            font-size: 9px;
            font-weight: 700;
            padding: 1px 0;
            letter-spacing: 0.3px;
        }
        .avatar-card-name {
            font-size: 11px;
            color: #d1d5db;
            text-align: center;
            line-height: 1.2;
            max-width: 90px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .avatar-card-lock {
            font-size: 10px;
            color: #ef4444;
            text-align: center;
        }
        .avatar-card-buy {
            font-size: 11px;
            color: #fbbf24;
            cursor: pointer;
            text-align: center;
            padding: 2px 8px;
            border-radius: 4px;
            transition: background .2s;
        }
        .avatar-card-buy:hover { background: rgba(251,191,36,0.12); }
        .avatar-card.locked .avatar-card-img { opacity: 0.4; }
        .avatar-card.locked .avatar-card-img img { filter: grayscale(70%); }
        .avatar-card-lock-icon {
            position: absolute;
            top: 50%; left: 50%;
            transform: translate(-50%,-50%);
            font-size: 22px;
            filter: drop-shadow(0 1px 3px rgba(0,0,0,0.6));
        }

        /* Input pseudo */
        .onboarding-input {
            background: rgba(0,10,0,0.9);
            border: 2px solid #1a3a1a;
            border-radius: 8px;
            color: #00ff00;
            font-family: 'Courier New', monospace;
            font-size: 1.1rem;
            padding: 12px 16px;
            width: 100%;
            max-width: 300px;
            text-align: center;
            outline: none;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .onboarding-input:focus {
            border-color: #00ff00;
            box-shadow: 0 0 15px rgba(0,255,0,0.3);
        }
        .onboarding-input::placeholder {
            color: #1a5a1a;
        }
        .onboarding-input-error {
            border-color: #ef4444 !important;
            box-shadow: 0 0 15px rgba(239,68,68,0.3) !important;
        }
        .onboarding-error-msg {
            color: #ef4444;
            font-size: 0.75rem;
            margin-top: 0.5rem;
            min-height: 1.2em;
        }

        /* Stats allocation */
        .onboarding-stat-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 12px;
            border: 1px solid #1a2a1a;
            border-radius: 8px;
            background: rgba(0,15,0,0.5);
            margin-bottom: 6px;
            opacity: 0;
            transform: translateY(10px);
        }
        .onboarding-stat-row.revealed {
            animation: onboardingStatReveal 0.4s ease forwards;
        }
        .onboarding-stat-name {
            color: #4ade80;
            font-size: 0.85rem;
            min-width: 100px;
        }
        .onboarding-stat-value {
            color: #00ff00;
            font-weight: bold;
            font-size: 1rem;
            min-width: 30px;
            text-align: center;
        }
        .onboarding-stat-btn {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            border: 1px solid #1a3a1a;
            background: rgba(0,20,0,0.8);
            color: #00ff00;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .onboarding-stat-btn:hover:not(:disabled) {
            background: rgba(0,60,0,0.9);
            border-color: #00ff00;
            box-shadow: 0 0 10px rgba(0,255,0,0.3);
        }
        .onboarding-stat-btn:disabled {
            opacity: 0.3;
            cursor: not-allowed;
        }
        .onboarding-stat-added {
            color: #fbbf24;
            font-size: 0.7rem;
            margin-left: 2px;
        }

        /* Points restants */
        .onboarding-points-counter {
            color: #fbbf24;
            font-size: 1.1rem;
            font-weight: bold;
            text-shadow: 0 0 10px rgba(251,191,36,0.5);
            margin-bottom: 1rem;
        }

        /* Classe preview */
        .onboarding-class-preview {
            background: rgba(0,20,0,0.8);
            border: 1px solid #1a3a1a;
            border-radius: 8px;
            padding: 10px 20px;
            text-align: center;
            margin-top: 0.75rem;
            transition: all 0.4s ease;
        }
        .onboarding-class-preview.highlight {
            border-color: #00ff00;
            box-shadow: 0 0 20px rgba(0,255,0,0.3);
            animation: onboardingClassReveal 0.6s ease;
        }
        .onboarding-class-name {
            color: #00ff00;
            font-size: 1.2rem;
            font-weight: bold;
            letter-spacing: 2px;
        }

        /* Boutons */
        .onboarding-btn {
            background: linear-gradient(180deg, #166616 0%, #0a3a0a 100%);
            border: 2px solid #00ff00;
            border-radius: 8px;
            color: #00ff00;
            font-family: 'Courier New', monospace;
            font-size: 0.95rem;
            font-weight: bold;
            letter-spacing: 2px;
            padding: 12px 32px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            margin-top: 1.5rem;
            position: relative;
            overflow: hidden;
        }
        .onboarding-btn::after {
            content: '';
            position: absolute;
            top: 0; left: -100%;
            width: 200%; height: 100%;
            background: linear-gradient(90deg, transparent, rgba(0,255,0,0.15), transparent);
            transition: left 0.5s ease;
        }
        .onboarding-btn:hover::after {
            left: 100%;
        }
        .onboarding-btn:hover {
            box-shadow: 0 0 20px rgba(0,255,0,0.4);
            transform: translateY(-2px);
        }
        .onboarding-btn:disabled {
            opacity: 0.4;
            cursor: not-allowed;
            transform: none;
        }

        /* Progress dots */
        .onboarding-progress {
            display: flex;
            gap: 8px;
            position: absolute;
            bottom: 2rem;
        }
        .onboarding-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            border: 1px solid #1a3a1a;
            background: transparent;
            transition: all 0.4s ease;
        }
        .onboarding-dot.active {
            background: #00ff00;
            border-color: #00ff00;
            box-shadow: 0 0 8px rgba(0,255,0,0.5);
        }
        .onboarding-dot.done {
            background: #166616;
            border-color: #4ade80;
        }

        /* Keyframes */
        @keyframes onboardingTypewriter {
            0% { width: 0; opacity: 0; }
            1% { opacity: 1; }
            100% { width: 100%; opacity: 1; }
        }
        @keyframes onboardingFadeUp {
            0% { opacity: 0; transform: translateY(15px); }
            100% { opacity: 1; transform: translateY(0); }
        }
        @keyframes onboardingGlowPulse {
            0%, 100% { box-shadow: 0 0 15px rgba(0,255,0,0.5); }
            50% { box-shadow: 0 0 25px rgba(0,255,0,0.8), 0 0 40px rgba(0,255,0,0.3); }
        }
        @keyframes onboardingStatReveal {
            0% { opacity: 0; transform: translateY(10px); }
            100% { opacity: 1; transform: translateY(0); }
        }
        @keyframes onboardingClassReveal {
            0% { transform: scale(0.8); opacity: 0; }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); opacity: 1; }
        }
        @keyframes onboardingScanline {
            0% { top: -5%; }
            100% { top: 105%; }
        }
        @keyframes onboardingFlicker {
            0%, 100% { opacity: 1; }
            92% { opacity: 1; }
            93% { opacity: 0.8; }
            94% { opacity: 1; }
            96% { opacity: 0.9; }
            97% { opacity: 1; }
        }

        /* Scanline overlay */
        .onboarding-scanline {
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, rgba(0,255,0,0.15), transparent);
            animation: onboardingScanline 4s linear infinite;
            pointer-events: none;
            z-index: 1;
        }