/* Free Dev Tools - Standalone Design System */

:root {
    --teal:      #20C6B7;
    --gold:      #F6B645;
    --orange:    #F2842E;
    --bg:        #0B0D11;
    --surface-1: #0F141B;
    --surface-2: #131A22;
    --text:      #E8EEF4;
    --text-dim:  #9AA7B4;
    --line:      #223046;
    --teal-gradient: linear-gradient(135deg, #20C6B7, #159e90);
    --brand-gradient: linear-gradient(135deg, #20C6B7 0%, #1CB0A2 38%, #F6B645 72%, #F2842E 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

a {
    color: var(--teal);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #18b1a5;
    text-decoration: underline;
}

/* Top navigation bar */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(11, 13, 17, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-nav .nav-brand {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.site-nav .nav-brand i {
    color: var(--teal);
}

.site-nav .nav-links {
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.site-nav .nav-links a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-dim);
}

.site-nav .nav-links a:hover {
    color: var(--teal);
    text-decoration: none;
}

.site-nav .nav-links a.active {
    color: var(--teal);
}

/* GitHub badge in nav */
.github-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.7rem;
    border-radius: 6px;
    border: 1px solid var(--line);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-dim);
    transition: all 0.2s ease;
}

.github-badge:hover {
    border-color: var(--teal);
    color: var(--text);
    text-decoration: none;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--line);
    padding: 2rem 1.5rem;
    text-align: center;
    margin-top: 4rem;
}

.site-footer p {
    font-size: 0.85rem;
    color: var(--text-dim);
}

.site-footer a {
    color: var(--teal);
    font-weight: 600;
}

/* Responsive */
@media (max-width: 768px) {
    .site-nav {
        padding: 0.6rem 1rem;
    }

    .site-nav .nav-links {
        gap: 0.75rem;
    }

    .site-nav .nav-links a {
        font-size: 0.78rem;
    }
}