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

:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --purple: #8b5cf6;
    --orange: #f97316;
    --teal: #14b8a6;
    --dark: #1e293b;
    --light: #f8fafc;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #ffffff;
    color: var(--dark);
    line-height: 1.6;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, #3f37c9 0%, #2e2a8f 100%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    z-index: 1000;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.logo i {
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-menu a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary);
}

.header-buttons {
    display: flex;
    gap: 1rem;
}

.btn-login,
.btn-register {
    padding: 0.625rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.btn-login {
    color: white;
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-login:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

.btn-register {
    background: var(--primary);
    color: white;
    border: 2px solid var(--primary);
}

.btn-register:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.hero {
    padding: 8rem 2rem 6rem;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.85) 0%, rgba(30, 41, 59, 0.90) 100%),
                url('https://images.unsplash.com/photo-1553413077-190dd305871c?w=1920&h=1080&fit=crop') center/cover;
    background-attachment: fixed;
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(14, 41, 84, 0.5);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    color: white;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-text h1 span {
    color: #fbbf24;
}

.hero-text p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 2rem;
    line-height: 1.8;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn-primary,
.btn-secondary,
.btn-cta {
    padding: 1rem 2rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(14, 165, 233, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: white;
    color: var(--primary);
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: center;
}

.stat strong {
    display: block;
    font-size: 2rem;
    color: white;
    font-weight: 700;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.3);
}

.stat span {
    display: block;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.3);
}

.hero-image {
    display: flex;
    justify-content: center;
}

.dashboard-preview {
    width: 500px;
    height: 400px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
    animation: float 3s ease-in-out infinite;
    border: 4px solid rgba(255, 255, 255, 0.2);
}

.dashboard-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(1.05);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.features {
    padding: 6rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    border: 2px solid #e2e8f0;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
}

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-icon.blue { background: linear-gradient(135deg, #0ea5e9, #0284c7); }
.feature-icon.green { background: linear-gradient(135deg, #10b981, #059669); }
.feature-icon.purple { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.feature-icon.orange { background: linear-gradient(135deg, #f97316, #ea580c); }
.feature-icon.red { background: linear-gradient(135deg, #ef4444, #dc2626); }
.feature-icon.teal { background: linear-gradient(135deg, #14b8a6, #0d9488); }

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--secondary);
    line-height: 1.7;
}

.about {
    padding: 6rem 2rem;
    background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 100%);
}

.about-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image {
    display: flex;
    justify-content: center;
}

.image-box {
    width: 450px;
    height: 350px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
    transform: rotate(-5deg);
}

.image-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

.about-text p {
    font-size: 1.125rem;
    color: var(--secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.benefits {
    list-style: none;
    padding: 0;
}

.benefits li {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.125rem;
    color: var(--dark);
    margin-bottom: 1rem;
}

.benefits i {
    color: var(--success);
    font-size: 1.25rem;
}

.cta {
    padding: 6rem 2rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 2rem;
}

.btn-cta {
    background: white;
    color: var(--primary);
}

.btn-cta:hover {
    background: #f8fafc;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.footer {
    background: linear-gradient(135deg, #3f37c9 0%, #2e2a8f 100%);
    color: white;
    padding: 3rem 2rem 1.5rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    margin-bottom: 2rem;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: #94a3b8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.footer-links h4 {
    color: white;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-links a {
    display: block;
    color: #94a3b8;
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    color: #94a3b8;
    font-size: 0.95rem;
}

@media (max-width: 1024px) {
    .hero-content,
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-image,
    .about-image {
        order: -1;
    }

    .dashboard-preview,
    .image-box {
        width: 300px;
        height: 300px;
    }
}

@media (max-width: 768px) {
    .nav-menu,
    .header-buttons {
        display: none;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}