:root { --accent: #34d399; --glass: rgba(255, 255, 255, 0.12); }
/* 1. Prevent the body from jumping when scrollbars appear */
body {
    margin: 0; padding: 0;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    background-attachment: fixed;
    font-family: -apple-system, system-ui, sans-serif;
    color: white;
    line-height: 1.6;
    display: flex; justify-content: center;
}

.container { width: 100%; max-width: 650px; margin: 20px; }

/* Header & Nav */
header { text-align: center; padding: 40px 0; }
h1 { margin: 0; font-size: 2.2rem; letter-spacing: -1px; }
.subtitle { opacity: 0.7; font-size: 0.9rem; margin-top: 5px; }

nav {
    display: flex; align-items: center;
    background: var(--glass);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    padding: 15px 20px; border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 30px;
}
nav a { color: white; text-decoration: none; font-weight: 600; font-size: 0.9rem; }
nav .sep { margin: 0 10px; opacity: 0.5; }

/* Cards for Index */
.feed { display: grid; gap: 15px; margin-top: 20px; }
.card {
    display: block; text-decoration: none; color: white;
    background: var(--glass);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    padding: 20px; border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.2s, background 0.2s;
    -webkit-tap-highlight-color: transparent;
}
.card:active { transform: scale(0.98); background: rgba(255, 255, 255, 0.25); }
.card-date { display: block; font-family: monospace; font-size: 0.75rem; color: var(--accent); margin-bottom: 5px; font-weight: bold; }
.card-title { font-size: 1.1rem; font-weight: 600; display: block; }
.card-desc { font-size: 0.85rem; opacity: 0.7; margin-top: 5px; display: block; }

/* Article/Guide Content */
article {
    background: rgba(255, 255, 255, 0.05);
    padding: 30px; border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}
article h1 { text-align: left; font-size: 1.8rem; color: var(--accent); margin-bottom: 10px; }
.meta { font-family: monospace; font-size: 0.8rem; opacity: 0.6; margin-bottom: 30px; display: block; }

/* Code blocks */
pre {
    background: #0d1117; color: #c9d1d9;
    padding: 20px; border-radius: 12px;
    overflow-x: auto; font-family: monospace;
    font-size: 0.9rem; border: 1px solid rgba(255, 255, 255, 0.1);
    margin: 20px 0;
}
code { font-family: monospace; background: rgba(0,0,0,0.3); padding: 2px 5px; border-radius: 4px; }

footer { text-align: center; margin-top: 60px; padding: 20px; font-size: 0.8rem; opacity: 0.5; font-family: monospace; }

@media (hover: hover) {
    .card:hover { transform: translateY(-3px); background: rgba(255, 255, 255, 0.2); border-color: var(--accent); }
}

/* Container for the code block to allow absolute positioning of the button */
.code-wrapper {
    position: relative;
    margin: 20px 0;
}

pre {
    margin: 0 !important; /* Reset margin since wrapper handles it */
}

.copy-button {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 34px;  /* Square button for icon only */
    height: 34px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    cursor: pointer;
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.copy-button svg {
    width: 18px;
    height: 18px;
    stroke: var(--accent); /* The green color from your theme */
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.copy-button:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--accent);
}

/* Success state when clicked */
.copy-button.copied {
    background: var(--accent);
    border-color: var(--accent);
}

.copy-button.copied svg {
    stroke: white; /* Icon turns white when background is green */
}