/* CSS Variables for Light and Dark Themes */
:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --accent-color: #4a90e2;
    --secondary-color: #f8f9fa;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --icon-bg: #f0f4f8;
    --button-bg: #4a90e2;
    --button-text: #ffffff;
    --footer-color: #666666;
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --accent-color: #64b5f6;
    --secondary-color: #2d2d2d;
    --shadow-color: rgba(255, 255, 255, 0.1);
    --icon-bg: #333333;
    --button-bg: #64b5f6;
    --button-text: #1a1a1a;
    --footer-color: #aaaaaa;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Container */
.container {
    width: 100%;
    max-width: 800px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    justify-content: center;
    align-items: center;
    text-align: center;
}

/* Content Section */
.content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

/* Main Title */
.main-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px var(--shadow-color);
    animation: fadeInUp 1s ease-out;
}

/* Launch Icon */
.launch-icon {
    margin: 1rem 0 2rem;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.launch-icon i {
    font-size: 3rem;
    color: var(--accent-color);
    transition: all 0.3s ease;
    cursor: pointer;
}

.launch-icon i:hover {
    transform: scale(1.2) rotate(15deg);
    color: var(--button-bg);
}

/* Description */
.description {
    font-size: 1.2rem;
    color: var(--text-color);
    max-width: 600px;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.2s both;
}

/* Icons Container */
.icons-container {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
    flex-wrap: wrap;
    justify-content: center;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.icon-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem;
    background-color: var(--icon-bg);
    border-radius: 15px;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.icon-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-color);
}

.icon-item i {
    font-size: 2rem;
    color: var(--accent-color);
    transition: color 0.3s ease;
}

.icon-item span {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color);
}

/* Theme Toggle Button */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--shadow-color);
    animation: fadeInUp 1s ease-out 0.6s both;
}

.theme-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-color);
}

.theme-toggle i {
    font-size: 1.1rem;
    transition: transform 0.3s ease;
}

.theme-toggle:hover i {
    transform: rotate(15deg);
}

/* Footer */
.footer {
    margin-top: auto;
    padding: 2rem 0 1rem;
    animation: fadeInUp 1s ease-out 0.8s both;
}

.footer p {
    color: var(--footer-color);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-title {
        font-size: 2.5rem;
    }
    
    .description {
        font-size: 1.1rem;
        padding: 0 1rem;
    }
    
    .icons-container {
        gap: 1rem;
    }
    
    .icon-item {
        padding: 1rem;
        min-width: 120px;
    }
    
    .icon-item i {
        font-size: 1.5rem;
    }
    
    .container {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 2rem;
    }
    
    .icons-container {
        flex-direction: column;
        align-items: center;
    }
    
    .icon-item {
        width: 200px;
    }
}