/* Welcome Screen Styles */
.welcome-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--dark-sidebar);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.welcome-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}

.welcome-content {
    max-width: 800px;
    width: 90%;
    text-align: center;
    padding: 2rem;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-xl);
    animation: slideUpFade 1s ease forwards;
}

.welcome-logo {
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
    animation: logoFloat 3s ease-in-out infinite;
}

.welcome-title {
    color: var(--white);
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards 0.5s;
}

.welcome-message {
    color: var(--gray-300);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards 0.8s;
}

.welcome-footer {
    display: flex;
    justify-content: center;
    gap: 1rem;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards 1s;
}

.welcome-enter-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 3rem;
    border-radius: var(--radius-full);
    font-size: 1.2rem;
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 200, 150, 0.3);
}

.welcome-enter-btn:hover {
    background: #02b086;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 200, 150, 0.4);
}

.welcome-language-btn {
    background: transparent;
    color: var(--gray-300);
    border: 2px solid var(--gray-600);
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.welcome-language-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

@keyframes slideUpFade {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

/* Mobile Responsive */
@media (max-width: 767.98px) {
    .welcome-content {
        padding: 1.5rem;
    }

    .welcome-logo {
        width: 80px;
        height: 80px;
        margin-bottom: 1.5rem;
    }

    .welcome-title {
        font-size: 1.8rem;
    }

    .welcome-message {
        font-size: 1rem;
    }

    .welcome-footer {
        flex-direction: column;
    }

    .welcome-enter-btn,
    .welcome-language-btn {
        width: 100%;
        justify-content: center;
    }
}