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

:root {
    --nav-bg: #0a1628;
    --page-bg: #1e2130;
    --sidebar-bg: #262b3d;
    --text: #e8e8e8;
    --text-muted: #9aa0b4;
    --accent: #2d6af6;
    --border: #323750;
}

body {
    font-family: 'Segoe UI', 'Aptos', Arial, sans-serif;
    background-color: var(--page-bg);
    color: var(--text);
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --- Nav --- */
nav {
    background-color: var(--nav-bg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 70px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.nav-left {
    display: flex;
    align-items: center;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-login {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 6px 14px;
    border-radius: 4px;
    font-size: 13px;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
    font-family: 'Segoe UI', 'Aptos', Arial, sans-serif;
}

.btn-login:hover {
    color: var(--text);
    border-color: var(--text-muted);
}

.btn-signup {
    background-color: var(--accent);
    border: none;
    color: #fff;
    padding: 6px 14px;
    border-radius: 4px;
    font-size: 13px;
    cursor: pointer;
    transition: opacity 0.2s;
    font-family: 'Segoe UI', 'Aptos', Arial, sans-serif;
}

.btn-signup:hover {
    opacity: 0.85;
}

/* --- Hero --- */
.hero {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 24px;
}

.hero-content {
    max-width: 600px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.hero-content h1 {
    font-size: 42px;
    font-weight: 500;
    color: var(--text);
    line-height: 1.2;
}

.subtitle {
    font-size: 18px;
    color: var(--text-muted);
    line-height: 1.6;
}

.btn-hero {
    display: inline-block;
    background-color: var(--accent);
    color: #fff;
    text-decoration: none;
    padding: 14px 32px;
    border-radius: 6px;
    font-size: 16px;
    font-family: 'Segoe UI', 'Aptos', Arial, sans-serif;
    transition: opacity 0.2s, transform 0.2s;
    margin-top: 8px;
}

.btn-hero:hover {
    opacity: 0.85;
    transform: translateY(-2px);
}

/* --- Mobile --- */
@media (max-width: 768px) {
    nav {
        padding: 0 16px;
        height: 56px;
    }

    .nav-logo img {
        width: 80px;
    }

    .hero-content h1 {
        font-size: 28px;
    }

    .subtitle {
        font-size: 15px;
    }

    .btn-hero {
        padding: 12px 24px;
        font-size: 15px;
    }
}