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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

a {
    color: var(--link);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s, color 0.2s;
}

a:hover {
    color: var(--link-hover);
    border-bottom-color: var(--link-hover);
}

h1, h2, h3, h4 {
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 0;
}

p {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

ul, ol {
    list-style: none;
    margin: 0;
    padding: 0;
}

img {
    max-width: 100%;
    display: block;
}

button {
    font-family: inherit;
}

/* Layout */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.page-container {
    padding-top: 2rem;
    padding-bottom: 4rem;
}

/* Navbar */
.navbar {
    background: var(--bg-nav);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 52px;
}

.nav-brand {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary) !important;
    border-bottom: none !important;
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    gap: 0;
}

.nav-links li a {
    display: block;
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    border-bottom: none !important;
    transition: color 0.2s;
}

.nav-links li a:hover,
.nav-links li a.active {
    color: var(--text-primary);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-secondary);
    margin: 4px 0;
    transition: 0.2s;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    padding: 1.5rem 0;
    margin-top: 3rem;
}

.footer-content {
    text-align: center;
}

.footer-content p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

/* Mobile */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 52px;
        left: 0;
        right: 0;
        background: var(--bg-nav);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 0.5rem 0;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li a {
        padding: 0.6rem 1.5rem;
    }

    .container {
        padding: 0 1rem;
    }
}