/* TEMA HITAM BIRU (Gemini Inspired) */
:root {
    --bg-main: #0b0d14;
    --bg-card: #151922;
    --text-main: #e3e3e3;
    --text-muted: #9aa0a6;
    --accent-blue: #1a73e8;
    --accent-light-blue: #8ab4f8;
    --border-color: #2a313e;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
}

header {
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--accent-light-blue);
    text-decoration: none;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 1.5rem;
    transition: color 0.3s;
}

nav a:hover, nav a.active {
    color: var(--accent-light-blue);
}

main {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 2rem;
    min-height: 75vh;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 1.5rem;
}

h1, h2, h3 {
    color: var(--text-main);
    margin-bottom: 1rem;
}

.post-title {
    color: var(--accent-light-blue);
    text-decoration: none;
    font-size: 1.4rem;
    font-weight: bold;
    display: inline-block;
    margin-bottom: 0.5rem;
}

.post-title:hover {
    text-decoration: underline;
}

.meta {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

pre {
    background-color: #05070a;
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    color: #a6d2ff;
    margin: 1rem 0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    margin-top: 3rem;
}

.btn {
    display: inline-block;
    background-color: var(--accent-blue);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    text-decoration: none;
    margin-top: 1rem;
    transition: background 0.3s;
}

.btn:hover {
    background-color: #1557b0;
}