:root { --green: #2ecc71; --dark: #131921; --gray: #f4f7f6; --gold: #f39c12; }
body { font-family: 'Segoe UI', sans-serif; margin: 0; background: var(--gray); color: var(--dark); }
.header { background: #fff; padding: 20px; border-bottom: 2px solid var(--green); display: flex; justify-content: space-between; align-items: center; }
.container { padding: 25px; max-width: 900px; margin: 0 auto; }
.card { background: #fff; padding: 25px; border-radius: 20px; box-shadow: 0 10px 30px rgba(0,0,0,0.05); margin-bottom: 20px; }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; margin-bottom: 30px; }
.stat-box { background: var(--dark); color: #fff; padding: 20px; border-radius: 15px; }
.btn-green { background: var(--green); color: #fff; padding: 15px; border-radius: 12px; text-decoration: none; display: block; text-align: center; font-weight: 900; margin-top: 20px; }
.nav-link { display: flex; align-items: center; padding: 15px; background: #f9f9f9; border-radius: 12px; text-decoration: none; color: inherit; margin-bottom: 10px; border: 1px solid #eee; }
.nav-link:hover { border-color: var(--green); background: #fff; }
.nav-link i { margin-right: 15px; color: var(--green); width: 20px; }