:root {
    --bg: #0f172a;
    --card: #111827;
    --primary: #38bdf8;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: #1f2937;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, sans-serif;
}

body {
    background: linear-gradient(180deg, #020617, #0f172a);
    color: var(--text);
    min-height: 100vh;
}

a {
    color: var(--primary);
    text-decoration: none;
}

header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

header h1 {
    font-size: 22px;
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 30px 20px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 25px;
}

h2 {
    font-size: 22px;
    margin-bottom: 15px;
}

p {
    color: var(--muted);
    margin-bottom: 15px;
    line-height: 1.6;
}

textarea, input {
    width: 100%;
    background: #020617;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    color: var(--text);
    margin-bottom: 15px;
    font-size: 14px;
}

textarea {
    min-height: 180px;
}

button {
    background: var(--primary);
    color: #020617;
    border: none;
    padding: 10px 18px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    margin-right: 10px;
}

button.secondary {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

pre {
    background: #020617;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 15px;
    overflow-x: auto;
    font-size: 13px;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.tool-box {
    padding: 20px;
    border-radius: 12px;
    background: var(--card);
    border: 1px solid var(--border);
    transition: 0.2s;
}

.tool-box:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
}

footer {
    border-top: 1px solid var(--border);
    padding: 20px;
    text-align: center;
    color: var(--muted);
    font-size: 14px;
}
.ad {
    margin: 25px 0;
    text-align: center;
}

.ad-header,
.ad-content,
.ad-footer {
    background: #020617;
    border: 1px dashed #1f2937;
    padding: 10px;
    border-radius: 10px;
}

.ad-sidebar {
    position: sticky;
    top: 20px;
}

/* Hide sidebar ads on mobile */
@media(max-width: 900px){
    .ad-sidebar {
        display: none;
    }
}