:root {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-main: #ffffff;
    --text-muted: #a0a0a0;
    --brand-color: #39CF49;
    --brand-hover: #2eb83c;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.logo {
    max-width: 200px;
    margin-bottom: 20px;
}

input {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    background-color: var(--bg-color);
    border: 1px solid #333;
    color: var(--text-main);
    border-radius: 6px;
    box-sizing: border-box;
}

input:focus {
    outline: none;
    border-color: var(--brand-color);
}

button {
    width: 100%;
    padding: 12px;
    background-color: var(--brand-color);
    color: #000;
    border: none;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 10px;
    transition: background-color 0.2s;
}

button:hover {
    background-color: var(--brand-hover);
}

a {
    color: var(--brand-color);
    text-decoration: none;
    font-size: 0.9em;
}

a:hover {
    text-decoration: underline;
}

.error { color: #ff4d4d; font-size: 0.9em; margin-bottom: 10px;}
.success { color: var(--brand-color); font-size: 0.9em; margin-bottom: 10px;}