* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: #121212;
    color: #e0e0e0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-wrapper {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: #1e1e1e;
    border-radius: 16px;
    padding: 40px 32px 32px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    border: 1px solid #333;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #66BB6A;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.login-subtitle {
    font-size: 0.9rem;
    color: #888;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: #aaa;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    background: #2d2d2d;
    border: 1px solid #444;
    border-radius: 8px;
    color: #e0e0e0;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus {
    border-color: #66BB6A;
}

.form-group input::placeholder {
    color: #666;
}

.btn-login {
    width: 100%;
    padding: 12px;
    background: #2E7D32;
    border: none;
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 8px;
}

.btn-login:hover:not(:disabled) {
    background: #1B5E20;
}

.btn-login:disabled {
    opacity: 0.6;
    cursor: wait;
}

.login-error {
    margin-top: 16px;
    padding: 10px 14px;
    background: rgba(211, 47, 47, 0.15);
    border: 1px solid rgba(211, 47, 47, 0.3);
    border-radius: 8px;
    color: #ef5350;
    font-size: 0.85rem;
    text-align: center;
}

.login-hint {
    margin-top: 20px;
    text-align: center;
    font-size: 0.78rem;
    color: #666;
    line-height: 1.5;
}