* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Inter', sans-serif;
    background: #f1f5f9;
    padding: 20px;
}
.login-container {
    max-width: 400px;
    margin: 100px auto;
    background: white;
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 20px 30px -12px rgba(0,0,0,0.1);
}
input, button {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border-radius: 40px;
    border: 1px solid #cbd5e1;
    font-size: 1rem;
}
button {
    background: #4f46e5;
    color: white;
    border: none;
    cursor: pointer;
    font-weight: bold;
}
button:hover { background: #4338ca; }
.error { color: #dc2626; margin-top: 10px; }
.admin-header {
    background: white;
    padding: 16px 24px;
    border-radius: 40px;
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
.admin-header a {
    color: #4f46e5;
    text-decoration: none;
    margin-left: 20px;
}
.card {
    background: white;
    border-radius: 24px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    text-align: left;
    padding: 12px;
    border-bottom: 1px solid #e2e8f0;
}
.btn {
    display: inline-block;
    background: #e2e8f0;
    padding: 6px 14px;
    border-radius: 30px;
    text-decoration: none;
    color: #1e293b;
    margin-right: 8px;
}
.btn-danger { background: #fee2e2; color: #b91c1c; }
.btn-primary { background: #4f46e5; color: white; }