:root {
    --bg: #ffffff;
    --fg: #111111;
    --accent: #000000;
    --muted: #888888;
    --border: #e5e5e5;
    --error: #ff3b30;
    --radius: 4px;
}

* { box-sizing: border-box; }

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

.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    padding: 20px;
}

.login-container h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 40px;
    text-transform: uppercase;
}

#login-form {
    width: 100%;
    max-width: 320px;
}

#login-form input {
    width: 100%;
    padding: 12px;
    margin-bottom: 20px;
    border: none;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

#login-form input:focus {
    border-bottom-color: var(--accent);
}

#login-form button {
    width: 100%;
    padding: 14px;
    margin-top: 20px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}

#login-form button:hover {
    opacity: 0.8;
}

#error {
    margin-top: 20px;
    font-size: 0.85rem;
    color: var(--error);
    text-align: center;
}