:root {
    --primary: #2c3e50;
    --accent: #3498db;
    --success: #27ae60;
    --bg: #f8f9fa;
    --text: #333;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    background-color: var(--bg);
    color: var(--text);
}

header {
    background-color: var(--primary);
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

main {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1rem;
}

section {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    margin-bottom: 2rem;
}

h2 {
    margin-top: 0;
    color: var(--primary);
    border-bottom: 2px solid #eee;
    padding-bottom: 0.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: 600;
}

input {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

button {
    background-color: var(--accent);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s;
}

button:hover {
    background-color: #2980b9;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    text-align: left;
    padding: 1rem;
    border-bottom: 1px solid #eee;
}

th {
    background-color: #fcfcfc;
    font-weight: 600;
}

#auth-status {
    font-size: 0.9rem;
    opacity: 0.8;
}