:root {
    --primary: #272e48;
    --primary-dark: #1e253c;
    --secondary: #11a1fd;
    --secondary-dark: #008be2;
    --bg-light: #f8f8f8;
    --bg-white: #ffffff;
    --bg-card: #ffffff;
    --text-dark: #272e48;
    --text-muted: #6b7280;
    --border-color: #efefef;
    --glass-border: rgba(0, 0, 0, 0.05);
    --font-main: 'Poppins', sans-serif;
}

html {
    scroll-behavior: smooth;
}

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

section {
    scroll-margin-top: 80px;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Nav */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -1px;
}

.logo span {
    color: var(--secondary);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: 0.3s;
    font-size: 0.95rem;
}

.nav-links a:hover {
    color: var(--secondary);
}

.btn-auth {
    padding: 0.7rem 1.6rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: 0.3s;
}

.btn-login {
    color: var(--primary);
    border: 1px solid var(--primary);
}

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

.btn-register {
    background: var(--secondary);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(17, 161, 253, 0.3);
}

.btn-register:hover {
    background: var(--secondary-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(17, 161, 253, 0.2);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 5%;
    position: relative;
    background: radial-gradient(circle at 100% 0%, #e0f2fe 0%, #f8f8f8 70%);
}

.hero-content {
    max-width: 650px;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.hero h1 span {
    color: var(--secondary);
}

.hero p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-btns {
    display: flex;
    gap: 1.2rem;
}

.hero-image {
    position: absolute;
    right: 5%;
    width: 45%;
    z-index: 1;
}

/* Features */
.features {
    padding: 100px 5%;
    background: var(--bg-white);
}

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

.section-header h2 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

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

.feature-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: 0.3s;
}

.feature-card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05);
    transform: translateY(-5px);
    border-color: var(--secondary);
}

.feature-icon {
    width: 54px;
    height: 54px;
    background: rgba(17, 161, 253, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--secondary);
    font-size: 1.4rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Stats */
.stats {
    padding: 60px 0;
    background: var(--primary);
    color: white;
}

.stats-container {
    display: flex;
    justify-content: space-around;
    max-width: 1200px;
    margin: 0 auto;
    flex-wrap: wrap;
    gap: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-item h4 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--secondary);
}

.stat-item p {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

/* Footer */
footer {
    padding: 60px 5% 30px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-white);
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    list-style: none;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: 0.3s;
}

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

.copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        justify-content: center;
        text-align: center;
        padding-top: 120px;
        height: auto;
        padding-bottom: 60px;
    }

    .hero-content {
        margin: 0 auto;
    }

    .hero h1 {
        font-size: 2.8rem;
    }

    .hero-image {
        position: relative;
        right: 0;
        width: 90%;
        margin-top: 4rem;
    }

    .hero-btns {
        justify-content: center;
    }
}