:root {
    --primary: #2b8a3e;
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #0f1724;
    --muted: #64748b;
    --border: rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] {
    --bg: #0f172a;
    --card: #1e293b;
    --text: #f1f5f9;
    --muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; transition: 0.3s ease; }
body { background: var(--bg); color: var(--text); font-family: 'Inter', system-ui, sans-serif; line-height: 1.6; }


.fade-in { animation: fadeIn 0.5s ease-in; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }


header {
    background: var(--card); border-bottom: 1px solid var(--border);
    padding: 1rem 5%; display: flex; justify-content: space-between; align-items: center;
    position: sticky; top: 0; z-index: 1000;
}
.logo { font-size: 1.5rem; font-weight: 800; color: var(--primary); }
nav { display: flex; gap: 10px; align-items: center; }
.nav-btn {
    text-decoration: none; color: var(--text); padding: 8px 16px;
    border-radius: 8px; font-weight: 600; font-size: 0.9rem;
}
.nav-btn:hover, .nav-btn.active { background-color: black;  color: white; }


.wrap { max-width: 1100px; margin: 0 auto; padding: 40px 20px; }
.panel { background: #bdbdbd;; padding: 30px; border-radius: 16px; border: 1px solid var(--border); box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }


.btn-main { 
    background: var(--primary); color: white; border: none; padding: 12px 24px; 
    border-radius: 8px; font-weight: bold; cursor: pointer; width: 100%;
}

.btn-main:hover { filter: brightness(1.1); transform: translateY(-2px);  background-color: black;}
input, textarea { 
    width: 100%; padding: 12px; margin-bottom: 15px; border-radius: 8px; 
    border: 1px solid var(--border); background: var(--bg); color: var(--text);
}