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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1a2c3e;
    background-color: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
.main-header {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-icon {
    font-size: 32px;
    color: #3388ff;
}

.logo-text {
    font-size: 24px;
    font-weight: 800;
    color: #1a2c3e;
}

.logo-text span {
    color: #3388ff;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: #4a5568;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #3388ff;
}

.nav-links a.active {
    color: #3388ff;
    font-weight: 600;
}

.user-menu {
    display: flex;
    gap: 15px;
    align-items: center;
}

.btn-login {
    background: transparent;
    border: 2px solid #3388ff;
    color: #3388ff;
    padding: 8px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-login:hover {
    background: #3388ff;
    color: white;
}

.btn-register {
    background: #3388ff;
    border: none;
    color: white;
    padding: 8px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-register:hover {
    background: #2c6eb2;
    transform: translateY(-2px);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-name {
    font-weight: 600;
    color: #1a2c3e;
}

.btn-logout {
    background: #ff6b6b;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    transition: background 0.3s;
}

.btn-logout:hover {
    background: #ff5252;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
    background: none;
    border: none;
    color: #1a2c3e;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #1a2c3e;
}

.hero-title .highlight {
    color: #3388ff;
    position: relative;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: #3388ff;
    border-radius: 2px;
}

.hero-subtitle {
    font-size: 18px;
    color: #4a5568;
    margin-bottom: 30px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 16px;
}

.btn-primary {
    background: #3388ff;
    color: white;
    box-shadow: 0 4px 15px rgba(51, 136, 255, 0.3);
}

.btn-primary:hover {
    background: #2c6eb2;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(51, 136, 255, 0.4);
}

.btn-secondary {
    background: white;
    color: #3388ff;
    border: 2px solid #3388ff;
}

.btn-secondary:hover {
    background: #3388ff;
    color: white;
    transform: translateY(-2px);
}

.btn-large {
    padding: 14px 32px;
    font-size: 18px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 32px;
    font-weight: 800;
    color: #3388ff;
}

.stat-label {
    font-size: 14px;
    color: #4a5568;
}

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
}

/* Features Section */
.features {
    background: #f8fafc;
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 50px;
    color: #1a2c3e;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 16px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #3388ff 0%, #5ca0ff 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 32px;
    color: white;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #1a2c3e;
}

.feature-card p {
    color: #4a5568;
    line-height: 1.6;
}

/* How it works Section */
.how-it-works {
    padding: 80px 0;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    text-align: center;
}

.step {
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: #3388ff;
    color: white;
    font-size: 28px;
    font-weight: 800;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.step h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #1a2c3e;
}

.step p {
    color: #4a5568;
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, #3388ff 0%, #5ca0ff 100%);
    padding: 80px 0;
    text-align: center;
    color: white;
}

.cta h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.cta p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.cta .btn-primary {
    background: white;
    color: #3388ff;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.cta .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

/* Footer */
.main-footer {
    background: #1a2c3e;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-section h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

.footer-section p {
    color: #a0b3c4;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #a0b3c4;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #3388ff;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s;
}

.social-links a:hover {
    background: #3388ff;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    margin-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #a0b3c4;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 40px 20px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 28px;
    }
}