* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background: #ffffff;
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Menu Button */
.menu-button {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    background: linear-gradient(135deg, #4285F4, #1a73e8);
    color: white;
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(66, 133, 244, 0.3);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(66, 133, 244, 0.4);
}

/* Navigation Menu */
.nav-menu {
    position: fixed;
    top: 0;
    left: -300px;
    width: 300px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    transition: left 0.3s ease;
    padding: 80px 20px 20px;
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.1);
}

.nav-menu.active {
    left: 0;
}

.nav-menu h3 {
    color: #4285F4;
    margin-bottom: 20px;
    font-size: 1.5rem;
    text-align: center;
}

.nav-item {
    display: block;
    padding: 15px 20px;
    color: #333;
    text-decoration: none;
    border-radius: 10px;
    margin-bottom: 10px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-item:hover {
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.1), rgba(52, 168, 83, 0.1));
    transform: translateX(10px);
}

.nav-item i {
    margin-right: 10px;
    width: 20px;
}

/* Scroll to Top Button */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #EA4335, #d33b2c);
    color: white;
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(234, 67, 53, 0.3);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 6px 25px rgba(234, 67, 53, 0.4);
}

/* Overlay for menu */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
}

.category-section {
    margin-bottom: 60px;
}

.category-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    background: linear-gradient(135deg, #4285F4, #EA4335, #FBBC04, #34A853);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

/* Enhanced Responsive Design */
@media (max-width: 1200px) {
    .cards-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
    }
}

@media (max-width: 992px) {
    .container {
        padding: 30px 15px;
    }
    
    .category-title {
        font-size: 2.2rem;
    }
    
    .cards-grid {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 20px;
    }
}

.card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.8s ease-out;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #4285F4, #EA4335, #FBBC04, #34A853);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.blue { background: linear-gradient(135deg, #4285F4, #1a73e8); }
.red { background: linear-gradient(135deg, #EA4335, #d33b2c); }
.yellow { background: linear-gradient(135deg, #FBBC04, #f9ab00); }
.green { background: linear-gradient(135deg, #34A853, #137333); }
.purple { background: linear-gradient(135deg, #9c27b0, #7b1fa2); }
.orange { background: linear-gradient(135deg, #ff9800, #f57c00); }

.card-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a1a1a;
}

.card-description {
    color: #666;
    margin-bottom: 20px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.card-features {
    list-style: none;
    margin-bottom: 25px;
}

.card-features li {
    padding: 8px 0;
    color: #555;
    font-size: 0.9rem;
    position: relative;
    padding-left: 20px;
}

.card-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #34A853;
    font-weight: bold;
}

.card-button {
    width: 100%;
    padding: 15px 25px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #4285F4, #1a73e8);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, #EA4335, #d33b2c);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, #34A853, #137333);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, #FBBC04, #f9ab00);
    color: #333;
}

.card-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.card-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.card-button:hover::before {
    left: 100%;
}

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

.stats-card {
    text-align: center;
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.1), rgba(52, 168, 83, 0.1));
}

.stats-number {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #4285F4, #34A853);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.pulse {
    animation: pulse 2s infinite;
}

@media (max-width: 768px) {
    .menu-button {
        width: 50px;
        height: 50px;
        font-size: 18px;
        top: 15px;
        left: 15px;
    }
    
    .scroll-top {
        width: 50px;
        height: 50px;
        font-size: 18px;
        bottom: 20px;
        right: 20px;
    }
    
    .nav-menu {
        width: 280px;
        padding: 70px 15px 15px;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .category-title {
        font-size: 1.8rem;
        margin-bottom: 30px;
    }
    
    .card {
        padding: 20px;
        margin: 0 10px;
    }
    
    .container {
        padding: 20px 10px;
    }
    
    .card-title {
        font-size: 1.2rem;
    }
    
    .card-description {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .category-title {
        font-size: 1.6rem;
    }
    
    .card {
        padding: 15px;
        margin: 0 5px;
    }
    
    .container {
        padding: 15px 5px;
    }
    
    .nav-menu {
        width: 100%;
        left: -100%;
    }
    
    .modal-content {
        margin: 10% auto;
        padding: 20px;
        width: 95%;
    }
}

@media (max-width: 360px) {
    .category-title {
        font-size: 1.4rem;
    }
    
    .card-title {
        font-size: 1.1rem;
    }
    
    .card-button {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
}