body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0f172a;
    color: #e2e8f0;
}

header {
    background: #020617;
    padding: 12px 40px;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    height: 50px;
}

nav a {
    margin-left: 20px;
    color: #e2e8f0;
    text-decoration: none;
    font-size: 14px;
}

nav a:hover {
    color: #22c55e;
}

.container {
    text-align: center;
    padding: 80px 20px;
}

h1 {
    font-size: 42px;
    margin-bottom: 10px;
}

.subtitle {
    color: #64748b;
    font-size: 14px;
}

.grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 40px;
}

.card {
    background: #1e293b;
    margin: 10px;
    padding: 25px;
    width: 260px;
    border-radius: 10px;
}

footer {
    text-align: center;
    padding: 20px;
    color: #64748b;
}

.info-box {
    max-width: 600px;
    margin: 50px auto;
    background: #1e293b;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.row {
    display: flex;
    border-bottom: 1px solid #334155;
}

.row:last-child {
    border-bottom: none;
}

.label {
    width: 40%;
    padding: 18px;
    background: #020617;
    font-weight: bold;
}

.value {
    width: 60%;
    padding: 18px;
}

.btn {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 18px;
    background: #22c55e;
    color: #020617;
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
}

input, textarea {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: none;
    background: #020617;
    color: #e2e8f0;
}