/* ============================================ */
/* Survival Mode - Кнопка в меню уровней        */
/* ============================================ */
.survival-mode-section {
    margin-top: 24px;
    padding: 20px;
    text-align: center;
    border-top: 2px solid rgba(255, 255, 255, 0.15);
}

.survival-btn {
    background: linear-gradient(135deg, #ff4e00, #ec9f05) !important;
    color: #fff !important;
    font-size: 1.2em;
    padding: 14px 36px;
    border: 2px solid #ff6a00;
    border-radius: 12px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    box-shadow: 0 4px 20px rgba(255, 78, 0, 0.4);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.survival-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    animation: survivalShine 3s infinite;
}

@keyframes survivalShine {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

.survival-btn:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 6px 30px rgba(255, 78, 0, 0.6);
}

.survival-btn:active {
    transform: translateY(1px) scale(0.98);
}

.survival-description {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9em;
    margin-top: 10px;
    font-style: italic;
}

.survival-best-stats {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 12px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85em;
}

.survival-best-stats strong {
    color: #ffcc00;
}

/* ============================================ */
/* Survival HUD (in-game overlay)               */
/* ============================================ */
.survival-hud {
    position: fixed;
    top: 50px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    pointer-events: none;
}

.survival-hud-inner {
    display: flex;
    gap: 16px;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid rgba(255, 140, 0, 0.5);
    border-radius: 10px;
    padding: 8px 20px;
    backdrop-filter: blur(8px);
}

.survival-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 60px;
}

.survival-label {
    font-size: 0.65em;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.survival-value {
    font-size: 1.1em;
    font-weight: bold;
    color: #ffcc00;
    text-shadow: 0 0 8px rgba(255, 204, 0, 0.5);
}

/* ============================================ */
/* Survival Result Screen                       */
/* ============================================ */
.survival-results {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin: 20px 0;
}

.survival-result-item {
    display: flex;
    justify-content: space-between;
    width: 240px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.survival-result-label {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95em;
}

.survival-result-value {
    color: #ffcc00;
    font-weight: bold;
    font-size: 1.1em;
}

.survival-result-rewards {
    display: flex;
    gap: 24px;
    margin-top: 8px;
}

.survival-result-best {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85em;
    text-align: center;
}

.survival-result-best strong {
    color: #ff8c00;
}

/* ============================================ */
/* Responsive                                   */
/* ============================================ */
@media (max-width: 480px) {
    .survival-hud-inner {
        gap: 8px;
        padding: 6px 12px;
    }

    .survival-stat {
        min-width: 45px;
    }

    .survival-label {
        font-size: 0.55em;
    }

    .survival-value {
        font-size: 0.9em;
    }

    .survival-btn {
        font-size: 1em;
        padding: 12px 24px;
    }

    .survival-result-item {
        width: 200px;
    }
}